TY  - JOUR
AU  - Janković, Andrija Z.
AU  - Ćujić, Mirjana R.
AU  - Stojković, Milica D.
AU  - Đolić, Maja B.
AU  - Živojinović, Dragana Z.
AU  - Onjia, Antonije E.
AU  - Ristić, Mirjana Đ.
AU  - Perić Grujić, Aleksandra A.
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7362
AB  - In this work, removal of heavy metals (Cr, Mn, Co, Ni, Cu, Zn, As, Cd, and Pb) from fly ash has been studied using acid leaching and wet oxidation methods. In parallel, microwave-assisted acid digestion was applied for determination of pseudo-total concentrations of heavy metals to estimate the leaching efficiency. Multivariate statistics (Pearson correlation, principal component analysis, and hierarchical cluster analysis) have shown two dominant groups of elements, depending on their characteristics and affinity towards the ash solid phase. Thus, Cr, Zn, Mn, Co, and Ni belong to the group I, while Pb, As, Cd, and Cu belong to the group II. It was demonstrated that the wet oxidation method was more suitable than acid leaching since the reduction in metal concentration was 30 to 75 % compared to 12 to 25 % obtained by acid digestion. The influence of fly ash treatment on the residue characteristics was investigated by X-ray diffractometry and scanning electron microscopy. The analyses revealed surface and structure changes of fly ash after the wet oxidation treatment. Overall, wet oxidation could be an appropriate treatment for heavy metal removal from fly ash, providing a material that could be further used, thus reducing the risk of pollution caused by the disposal of coal combustion fly ash. © 2024, Association of the Chemical Engineers of Serbia.
AB  - Uklanjanje teških metala (Cr, Mn, Co, Ni, Cu, Zn, As, Cd i Pb) iz elektrofilterskog pepela proučavano je korišćenjem metoda kiselog luženja i vlažne oksidacije. Paralelno je primenjena i kisela digestija uz pomoć mikrotalasne pećnice za određivanje pseudoukupnih koncentracija teških metala u cilju procene efikasnosti luženja. Multivarijantna statistika (Pearsonova korelacija, analiza glavnih komponenti i hijerarhijska klaster analiza) pokazala je dve dominantne grupe elemenata u zavisnosti od njihovih karakteristika i afiniteta prema čvrstoj fazi pepela. Grupe I (Cr, Zn, Mn, Co i Ni) i II (Pb, As, Cd i Cu) su međusobno diskriminisane. Pokazalo se da je metoda vlažne oksidacije prikladnija od kiselog luženja jer je smanjenje koncentracija metala bilo 30-75 % u poređenju sa 12-25 % dobijenih kiselom digestijom. Takođe je ispitan uticaj tretmana letećeg pepela na karakteristike čvrstog ostatka metodama rendgenske difrakcije i skenirajuće elektronske mikroskopije. Ovim metodama su otkrivene promene na površini i u strukturi letećeg pepela nakon tretmana vlažnom oksidacijom. Vlažna oksidacija se može smatrati kao moguća metoda za tretman u cilju uklanjanje teških metala iz letećeg pepela, obezbeđujući materijal koji bi se mogao dalje koristiti i smanjujući rizik od zagađenja izazvanog odlaganjem letećeg pepela.
PB  - Savez hemijskih inženjera Srbije
T2  - Hemijska industrija
T1  - Impact of leaching procedure on heavy metals removal from coal fly ash
T1  - Uticaj metode izluživanja na uklanjanje teških metala iz letećeg pepela
EP  - 62
IS  - 1
SP  - 51
VL  - 78
DO  - 10.2298/HEMIND230901001J
ER  - 

@article{
author = "Janković, Andrija Z. and Ćujić, Mirjana R. and Stojković, Milica D. and Đolić, Maja B. and Živojinović, Dragana Z. and Onjia, Antonije E. and Ristić, Mirjana Đ. and Perić Grujić, Aleksandra A.",
year = "2024",
abstract = "In this work, removal of heavy metals (Cr, Mn, Co, Ni, Cu, Zn, As, Cd, and Pb) from fly ash has been studied using acid leaching and wet oxidation methods. In parallel, microwave-assisted acid digestion was applied for determination of pseudo-total concentrations of heavy metals to estimate the leaching efficiency. Multivariate statistics (Pearson correlation, principal component analysis, and hierarchical cluster analysis) have shown two dominant groups of elements, depending on their characteristics and affinity towards the ash solid phase. Thus, Cr, Zn, Mn, Co, and Ni belong to the group I, while Pb, As, Cd, and Cu belong to the group II. It was demonstrated that the wet oxidation method was more suitable than acid leaching since the reduction in metal concentration was 30 to 75 % compared to 12 to 25 % obtained by acid digestion. The influence of fly ash treatment on the residue characteristics was investigated by X-ray diffractometry and scanning electron microscopy. The analyses revealed surface and structure changes of fly ash after the wet oxidation treatment. Overall, wet oxidation could be an appropriate treatment for heavy metal removal from fly ash, providing a material that could be further used, thus reducing the risk of pollution caused by the disposal of coal combustion fly ash. © 2024, Association of the Chemical Engineers of Serbia., Uklanjanje teških metala (Cr, Mn, Co, Ni, Cu, Zn, As, Cd i Pb) iz elektrofilterskog pepela proučavano je korišćenjem metoda kiselog luženja i vlažne oksidacije. Paralelno je primenjena i kisela digestija uz pomoć mikrotalasne pećnice za određivanje pseudoukupnih koncentracija teških metala u cilju procene efikasnosti luženja. Multivarijantna statistika (Pearsonova korelacija, analiza glavnih komponenti i hijerarhijska klaster analiza) pokazala je dve dominantne grupe elemenata u zavisnosti od njihovih karakteristika i afiniteta prema čvrstoj fazi pepela. Grupe I (Cr, Zn, Mn, Co i Ni) i II (Pb, As, Cd i Cu) su međusobno diskriminisane. Pokazalo se da je metoda vlažne oksidacije prikladnija od kiselog luženja jer je smanjenje koncentracija metala bilo 30-75 % u poređenju sa 12-25 % dobijenih kiselom digestijom. Takođe je ispitan uticaj tretmana letećeg pepela na karakteristike čvrstog ostatka metodama rendgenske difrakcije i skenirajuće elektronske mikroskopije. Ovim metodama su otkrivene promene na površini i u strukturi letećeg pepela nakon tretmana vlažnom oksidacijom. Vlažna oksidacija se može smatrati kao moguća metoda za tretman u cilju uklanjanje teških metala iz letećeg pepela, obezbeđujući materijal koji bi se mogao dalje koristiti i smanjujući rizik od zagađenja izazvanog odlaganjem letećeg pepela.",
publisher = "Savez hemijskih inženjera Srbije",
journal = "Hemijska industrija",
title = "Impact of leaching procedure on heavy metals removal from coal fly ash, Uticaj metode izluživanja na uklanjanje teških metala iz letećeg pepela",
pages = "62-51",
number = "1",
volume = "78",
doi = "10.2298/HEMIND230901001J"
}

Janković, A. Z., Ćujić, M. R., Stojković, M. D., Đolić, M. B., Živojinović, D. Z., Onjia, A. E., Ristić, M. Đ.,& Perić Grujić, A. A.. (2024). Impact of leaching procedure on heavy metals removal from coal fly ash. in Hemijska industrija
Savez hemijskih inženjera Srbije., 78(1), 51-62.
https://doi.org/10.2298/HEMIND230901001J

Janković AZ, Ćujić MR, Stojković MD, Đolić MB, Živojinović DZ, Onjia AE, Ristić MĐ, Perić Grujić AA. Impact of leaching procedure on heavy metals removal from coal fly ash. in Hemijska industrija. 2024;78(1):51-62.
doi:10.2298/HEMIND230901001J .

Janković, Andrija Z., Ćujić, Mirjana R., Stojković, Milica D., Đolić, Maja B., Živojinović, Dragana Z., Onjia, Antonije E., Ristić, Mirjana Đ., Perić Grujić, Aleksandra A., "Impact of leaching procedure on heavy metals removal from coal fly ash" in Hemijska industrija, 78, no. 1 (2024):51-62,
https://doi.org/10.2298/HEMIND230901001J . .

TY  - JOUR
AU  - Katnić, Đurica B.
AU  - Porobić, Slavica J.
AU  - Vujčić, Ivica
AU  - Kojić, Marija M.
AU  - Lazarević-Pašti, Tamara
AU  - Milanković, Vedran
AU  - Marinović-Cincović, Milena
AU  - Živojinović, Dragana Z.
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6633
AB  - Irradiated fig pomace pyrochar (IrrPyrFP) is noteworthy as a novel sterilized low-cost sorbent of BTEX, pesticides, and Pb2+ ions. It was produced by applying pyrolysis treatment followed by gamma irradiation modification in order to obtain a highly efficient and sterile sorbent. The characterization of fig pomace before and after pyrolysis, as well as before and after irradiation of the obtained pyrochar, was done using SEM, FTIR, and elemental analysis, while its sorption ability was tested through the removal of examined pollutants by batch sorption experiments. The obtained results suggest that IrrPyrFP could play a significant role in the control of environmental pollutants, as indicated by the maximum adsorption capacities: 42 mg g−1 for BTEX, 0.625 mg g−1 for malathion, 0.495 mg g−1 for chlorpyrifos and 255 mg g−1 for Pb2+. A kinetic study showed that the removal process by IrrPyrFP mainly follows pseudo 2nd kinetics order, while the sorption equilibriums were estimated using the Langmuir and Freundlich model. Overall, the findings of this work suggest that pyrolysis and activation by irradiation of waste biomass is a promising way to produce sterile efficient sorbents for waste-water treatment based on green chemistry. Additionally, the demonstrated application of fig pomace promotes the potential of using this biomass for continual and economical waste management in the rising fig industry.
PB  - Elsevier Ltd
T2  - Radiation Physics and Chemistry
T1  - Irradiated fig pomace pyrochar as a promising and sustainable sterilized sorbent for water pollutant removal
SP  - 111277
VL  - 214
DO  - 10.1016/j.radphyschem.2023.111277
ER  - 

@article{
author = "Katnić, Đurica B. and Porobić, Slavica J. and Vujčić, Ivica and Kojić, Marija M. and Lazarević-Pašti, Tamara and Milanković, Vedran and Marinović-Cincović, Milena and Živojinović, Dragana Z.",
year = "2024",
abstract = "Irradiated fig pomace pyrochar (IrrPyrFP) is noteworthy as a novel sterilized low-cost sorbent of BTEX, pesticides, and Pb2+ ions. It was produced by applying pyrolysis treatment followed by gamma irradiation modification in order to obtain a highly efficient and sterile sorbent. The characterization of fig pomace before and after pyrolysis, as well as before and after irradiation of the obtained pyrochar, was done using SEM, FTIR, and elemental analysis, while its sorption ability was tested through the removal of examined pollutants by batch sorption experiments. The obtained results suggest that IrrPyrFP could play a significant role in the control of environmental pollutants, as indicated by the maximum adsorption capacities: 42 mg g−1 for BTEX, 0.625 mg g−1 for malathion, 0.495 mg g−1 for chlorpyrifos and 255 mg g−1 for Pb2+. A kinetic study showed that the removal process by IrrPyrFP mainly follows pseudo 2nd kinetics order, while the sorption equilibriums were estimated using the Langmuir and Freundlich model. Overall, the findings of this work suggest that pyrolysis and activation by irradiation of waste biomass is a promising way to produce sterile efficient sorbents for waste-water treatment based on green chemistry. Additionally, the demonstrated application of fig pomace promotes the potential of using this biomass for continual and economical waste management in the rising fig industry.",
publisher = "Elsevier Ltd",
journal = "Radiation Physics and Chemistry",
title = "Irradiated fig pomace pyrochar as a promising and sustainable sterilized sorbent for water pollutant removal",
pages = "111277",
volume = "214",
doi = "10.1016/j.radphyschem.2023.111277"
}

Katnić, Đ. B., Porobić, S. J., Vujčić, I., Kojić, M. M., Lazarević-Pašti, T., Milanković, V., Marinović-Cincović, M.,& Živojinović, D. Z.. (2024). Irradiated fig pomace pyrochar as a promising and sustainable sterilized sorbent for water pollutant removal. in Radiation Physics and Chemistry
Elsevier Ltd., 214, 111277.
https://doi.org/10.1016/j.radphyschem.2023.111277

Katnić ĐB, Porobić SJ, Vujčić I, Kojić MM, Lazarević-Pašti T, Milanković V, Marinović-Cincović M, Živojinović DZ. Irradiated fig pomace pyrochar as a promising and sustainable sterilized sorbent for water pollutant removal. in Radiation Physics and Chemistry. 2024;214:111277.
doi:10.1016/j.radphyschem.2023.111277 .

Katnić, Đurica B., Porobić, Slavica J., Vujčić, Ivica, Kojić, Marija M., Lazarević-Pašti, Tamara, Milanković, Vedran, Marinović-Cincović, Milena, Živojinović, Dragana Z., "Irradiated fig pomace pyrochar as a promising and sustainable sterilized sorbent for water pollutant removal" in Radiation Physics and Chemistry, 214 (2024):111277,
https://doi.org/10.1016/j.radphyschem.2023.111277 . .

TY  - CONF
AU  - Trajković, Dušan
AU  - Vukčević, Marija
AU  - Maletić, Marina
AU  - Trivunac, Katarina
AU  - Perić Grujić, Aleksandra
AU  - Živojinović, Dragana
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6640
AB  - The immense quantity of industrial waste is a global problem that requires new solutions in accordance with the principles of circular economy and sustainable development. Therefore, in this work, fly ash obtained as waste from thermal power plants was used as an adsorbent for the removal of pharmaceutical residues from water. To improve the adsorption efficiency of fly ash, different modification methods were applied. Obtained adsorbents were characterized by SEM and FTIR. In order to improve the adsorption characteristics, the adsorption parameters were optimized (volume, initial concentration, and pH value of adsorbate solution, adsorbent mass, and contact time between adsorbent and adsorbate). Artificial neural networks were applied to establish the correlation between the examined adsorption parameters and to define the parameters having the greatest influence on the adsorption efficiency. The chemometric approach enabled the reduction of variables, i.e., the number of experiments necessary for the optimization of pharmaceutical residue adsorption onto modified fly ash, giving a good basis for the commercial application of fly ash in the field of wastewater treatment.
PB  - Skopje : Society of Chemists and Technologists of Macedonia
C3  - Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia
T1  - Modified Fly Ash for Adsorption of Pharmaceuticals from Water: Chemometric Approach to the Optimization of Adsorption Method
SP  - 114
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6640
ER  - 

@conference{
author = "Trajković, Dušan and Vukčević, Marija and Maletić, Marina and Trivunac, Katarina and Perić Grujić, Aleksandra and Živojinović, Dragana",
year = "2023",
abstract = "The immense quantity of industrial waste is a global problem that requires new solutions in accordance with the principles of circular economy and sustainable development. Therefore, in this work, fly ash obtained as waste from thermal power plants was used as an adsorbent for the removal of pharmaceutical residues from water. To improve the adsorption efficiency of fly ash, different modification methods were applied. Obtained adsorbents were characterized by SEM and FTIR. In order to improve the adsorption characteristics, the adsorption parameters were optimized (volume, initial concentration, and pH value of adsorbate solution, adsorbent mass, and contact time between adsorbent and adsorbate). Artificial neural networks were applied to establish the correlation between the examined adsorption parameters and to define the parameters having the greatest influence on the adsorption efficiency. The chemometric approach enabled the reduction of variables, i.e., the number of experiments necessary for the optimization of pharmaceutical residue adsorption onto modified fly ash, giving a good basis for the commercial application of fly ash in the field of wastewater treatment.",
publisher = "Skopje : Society of Chemists and Technologists of Macedonia",
journal = "Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia",
title = "Modified Fly Ash for Adsorption of Pharmaceuticals from Water: Chemometric Approach to the Optimization of Adsorption Method",
pages = "114",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6640"
}

Trajković, D., Vukčević, M., Maletić, M., Trivunac, K., Perić Grujić, A.,& Živojinović, D.. (2023). Modified Fly Ash for Adsorption of Pharmaceuticals from Water: Chemometric Approach to the Optimization of Adsorption Method. in Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia
Skopje : Society of Chemists and Technologists of Macedonia., 114.
https://hdl.handle.net/21.15107/rcub_technorep_6640

Trajković D, Vukčević M, Maletić M, Trivunac K, Perić Grujić A, Živojinović D. Modified Fly Ash for Adsorption of Pharmaceuticals from Water: Chemometric Approach to the Optimization of Adsorption Method. in Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia. 2023;:114.
https://hdl.handle.net/21.15107/rcub_technorep_6640 .

Trajković, Dušan, Vukčević, Marija, Maletić, Marina, Trivunac, Katarina, Perić Grujić, Aleksandra, Živojinović, Dragana, "Modified Fly Ash for Adsorption of Pharmaceuticals from Water: Chemometric Approach to the Optimization of Adsorption Method" in Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia (2023):114,
https://hdl.handle.net/21.15107/rcub_technorep_6640 .

TY  - JOUR
AU  - Martinović, Sanja
AU  - Alil, Ana
AU  - Milićević, Sonja
AU  - Živojinović, Dragana
AU  - Volkov Husović, Tatjana
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6355
AB  - The pattern recognition approach, explored by this study, applies the principal component analysis (PCA) as the most widely used statistical method with the aim of assessing the initiation and propagation of the cracks and defects that appear on the surface of material exposed to the cavitation. The experiment was performed in four stages: (a) synthesis of two ceramic materials (cordierite and zircon); (b) subjecting the samples to the cavitation; (c) using image analysis software for collecting the data about morphological characteristics that describe defects; (d) principal component analysis as a pattern recognition tool in order to characterize the defects at the material surface. Besides that, according to standard, cavitation erosion was monitored by determining material mass loss during the cavitation. Large experimental datasets collected from morphological descriptors by image analysis are multivariate and difficult to interpret, thus are processed by principal component analysis as the most informative technique for extracting possible differences. The performed approach proved that this method has a great potential for better assessment of induced defects by proper distinguishing among them at different levels and that can be considered a very efficient and cost-effective one.
PB  - Elsevier Ltd
T2  - Engineering Failure Analysis
T1  - Morphological assessment of cavitation caused damage of cordierite and zircon based materials using principal component analysis
SP  - 107224
VL  - 148
DO  - 10.1016/j.engfailanal.2023.107224
ER  - 

@article{
author = "Martinović, Sanja and Alil, Ana and Milićević, Sonja and Živojinović, Dragana and Volkov Husović, Tatjana",
year = "2023",
abstract = "The pattern recognition approach, explored by this study, applies the principal component analysis (PCA) as the most widely used statistical method with the aim of assessing the initiation and propagation of the cracks and defects that appear on the surface of material exposed to the cavitation. The experiment was performed in four stages: (a) synthesis of two ceramic materials (cordierite and zircon); (b) subjecting the samples to the cavitation; (c) using image analysis software for collecting the data about morphological characteristics that describe defects; (d) principal component analysis as a pattern recognition tool in order to characterize the defects at the material surface. Besides that, according to standard, cavitation erosion was monitored by determining material mass loss during the cavitation. Large experimental datasets collected from morphological descriptors by image analysis are multivariate and difficult to interpret, thus are processed by principal component analysis as the most informative technique for extracting possible differences. The performed approach proved that this method has a great potential for better assessment of induced defects by proper distinguishing among them at different levels and that can be considered a very efficient and cost-effective one.",
publisher = "Elsevier Ltd",
journal = "Engineering Failure Analysis",
title = "Morphological assessment of cavitation caused damage of cordierite and zircon based materials using principal component analysis",
pages = "107224",
volume = "148",
doi = "10.1016/j.engfailanal.2023.107224"
}

Martinović, S., Alil, A., Milićević, S., Živojinović, D.,& Volkov Husović, T.. (2023). Morphological assessment of cavitation caused damage of cordierite and zircon based materials using principal component analysis. in Engineering Failure Analysis
Elsevier Ltd., 148, 107224.
https://doi.org/10.1016/j.engfailanal.2023.107224

Martinović S, Alil A, Milićević S, Živojinović D, Volkov Husović T. Morphological assessment of cavitation caused damage of cordierite and zircon based materials using principal component analysis. in Engineering Failure Analysis. 2023;148:107224.
doi:10.1016/j.engfailanal.2023.107224 .

Martinović, Sanja, Alil, Ana, Milićević, Sonja, Živojinović, Dragana, Volkov Husović, Tatjana, "Morphological assessment of cavitation caused damage of cordierite and zircon based materials using principal component analysis" in Engineering Failure Analysis, 148 (2023):107224,
https://doi.org/10.1016/j.engfailanal.2023.107224 . .

TY  - JOUR
AU  - Vlahović, Milica
AU  - Alil, Ana
AU  - Devečerski, Aleksandar
AU  - Živojinović, Dragana
AU  - Volkov-Husović, Tatjana
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6618
AB  - In many industrial processes that include fluid flow, cavitation erosion of different engineeringstructures (pumps, turbines, water levels, valves, etc.) during their operation is expected. Metallic,ceramic, and composite materials are usual candidates considered for application in such extremeconditions. In this study, the idea is to synthesize refractory ceramic material based on talc withthe addition of zeolite for utilization as protective coatings in cavitating conditions. Two talc-basedrefractories with zeolites from two Serbian deposits were produced. The behaviors of the samplesin simulated cavitation conditions were examined by an advanced non-destructive methodologyconsisting of monitoring mass loss and surface degradation using image analysis compiled withprincipal component analysis (PCA), interior degradation by ultrasonic measurements, and themicrostructure by a scanning electron microscope (SEM). Lower mass loss, surface degradation level,and modeled strength decrease indicated better cavitation resistance of the sample with Igros zeolite,whereby measured strength values validated the model. For the chosen critical strength, the criticalcavitation period as well as critical morphological descriptors, Area and Diameter (max and min),were determined. A Young’s elasticity modulus decrease indicated that surface damage influenceprogressed towards interior of the material. It can be concluded that the proposed methodologyapproach is efficient and reliable in predicting the materials’ service life in extreme conditions.
PB  - MDPI
T2  - Materials
T1  - Non-Destructive Examination for Cavitation Resistance of Talc-Based Refractories with Different Zeolite Types Intended for Protective Coatings
IS  - 16
SP  - 5577
VL  - 16
DO  - 10.3390/ma16165577
ER  - 

@article{
author = "Vlahović, Milica and Alil, Ana and Devečerski, Aleksandar and Živojinović, Dragana and Volkov-Husović, Tatjana",
year = "2023",
abstract = "In many industrial processes that include fluid flow, cavitation erosion of different engineeringstructures (pumps, turbines, water levels, valves, etc.) during their operation is expected. Metallic,ceramic, and composite materials are usual candidates considered for application in such extremeconditions. In this study, the idea is to synthesize refractory ceramic material based on talc withthe addition of zeolite for utilization as protective coatings in cavitating conditions. Two talc-basedrefractories with zeolites from two Serbian deposits were produced. The behaviors of the samplesin simulated cavitation conditions were examined by an advanced non-destructive methodologyconsisting of monitoring mass loss and surface degradation using image analysis compiled withprincipal component analysis (PCA), interior degradation by ultrasonic measurements, and themicrostructure by a scanning electron microscope (SEM). Lower mass loss, surface degradation level,and modeled strength decrease indicated better cavitation resistance of the sample with Igros zeolite,whereby measured strength values validated the model. For the chosen critical strength, the criticalcavitation period as well as critical morphological descriptors, Area and Diameter (max and min),were determined. A Young’s elasticity modulus decrease indicated that surface damage influenceprogressed towards interior of the material. It can be concluded that the proposed methodologyapproach is efficient and reliable in predicting the materials’ service life in extreme conditions.",
publisher = "MDPI",
journal = "Materials",
title = "Non-Destructive Examination for Cavitation Resistance of Talc-Based Refractories with Different Zeolite Types Intended for Protective Coatings",
number = "16",
pages = "5577",
volume = "16",
doi = "10.3390/ma16165577"
}

Vlahović, M., Alil, A., Devečerski, A., Živojinović, D.,& Volkov-Husović, T.. (2023). Non-Destructive Examination for Cavitation Resistance of Talc-Based Refractories with Different Zeolite Types Intended for Protective Coatings. in Materials
MDPI., 16(16), 5577.
https://doi.org/10.3390/ma16165577

Vlahović M, Alil A, Devečerski A, Živojinović D, Volkov-Husović T. Non-Destructive Examination for Cavitation Resistance of Talc-Based Refractories with Different Zeolite Types Intended for Protective Coatings. in Materials. 2023;16(16):5577.
doi:10.3390/ma16165577 .

Vlahović, Milica, Alil, Ana, Devečerski, Aleksandar, Živojinović, Dragana, Volkov-Husović, Tatjana, "Non-Destructive Examination for Cavitation Resistance of Talc-Based Refractories with Different Zeolite Types Intended for Protective Coatings" in Materials, 16, no. 16 (2023):5577,
https://doi.org/10.3390/ma16165577 . .

TY  - JOUR
AU  - Katnić, Đurica
AU  - Porobić, Slavica J.
AU  - Lazarević-Pašti, Tamara
AU  - Kojić, Marija
AU  - Tasić, Tamara
AU  - Marinović-Cincović, Milena
AU  - Živojinović, Dragana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11871
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6802
AB  - The removal of environmental pollutants is significant because of their harmful effects on living organisms. Biochar is favorable as a natural adsorbent of environmental pollutants due to its advantages, such as environmental acceptability and economic profitability. This study evaluated the potential of pyrolyzed plum pomace (PyrPP) as an adsorbent for environmental pollutants: Pb2+ ions, pesticides (chlorpyrifos and malathion), as well as organic pollutants BTEX. In order to ameliorate the adsorption capacity of PyrPP, modification by gamma irradiation was performed. Irradiated plum pomace biochar (IrPyrPP) has been shown to be an effective adsorbent, and the material is also sterilized by irradiation, which makes this material potentially sterile adsorbents of the most environmental pollutants from water. The irradiated biochar showed better adsorption performances for the removal of Pb2+ ions, BTEX, and chlorpyrifos. Maximum adsorption capacity (Qmax) of PyrPP for Pb2+, BTEX, chlorpyrifos, and malathion adsorption was 157.0, 17.6, 0.219, and 1.067 mg g− 1 , while Qmax of IrPyrPP for Pb2+, BTEX, chlorpyrifos and malathion was 271.0, 48.0, 0.428 and 0.593 mg g− 1 , respectively. The results obtained during this research suggest that biomass pyrolysis and modification of this biomass by irradiation is a promising way to produce efficient natural sterile sorbents for wastewater treatment.
T2  - Journal of Water Process Engineering
T1  - Sterilized plum pomace biochar as a low-cost effective sorbent of environmental contaminants
SP  - 104487
VL  - 56
DO  - 10.1016/j.jwpe.2023.104487
ER  - 

@article{
author = "Katnić, Đurica and Porobić, Slavica J. and Lazarević-Pašti, Tamara and Kojić, Marija and Tasić, Tamara and Marinović-Cincović, Milena and Živojinović, Dragana",
year = "2023",
abstract = "The removal of environmental pollutants is significant because of their harmful effects on living organisms. Biochar is favorable as a natural adsorbent of environmental pollutants due to its advantages, such as environmental acceptability and economic profitability. This study evaluated the potential of pyrolyzed plum pomace (PyrPP) as an adsorbent for environmental pollutants: Pb2+ ions, pesticides (chlorpyrifos and malathion), as well as organic pollutants BTEX. In order to ameliorate the adsorption capacity of PyrPP, modification by gamma irradiation was performed. Irradiated plum pomace biochar (IrPyrPP) has been shown to be an effective adsorbent, and the material is also sterilized by irradiation, which makes this material potentially sterile adsorbents of the most environmental pollutants from water. The irradiated biochar showed better adsorption performances for the removal of Pb2+ ions, BTEX, and chlorpyrifos. Maximum adsorption capacity (Qmax) of PyrPP for Pb2+, BTEX, chlorpyrifos, and malathion adsorption was 157.0, 17.6, 0.219, and 1.067 mg g− 1 , while Qmax of IrPyrPP for Pb2+, BTEX, chlorpyrifos and malathion was 271.0, 48.0, 0.428 and 0.593 mg g− 1 , respectively. The results obtained during this research suggest that biomass pyrolysis and modification of this biomass by irradiation is a promising way to produce efficient natural sterile sorbents for wastewater treatment.",
journal = "Journal of Water Process Engineering",
title = "Sterilized plum pomace biochar as a low-cost effective sorbent of environmental contaminants",
pages = "104487",
volume = "56",
doi = "10.1016/j.jwpe.2023.104487"
}

Katnić, Đ., Porobić, S. J., Lazarević-Pašti, T., Kojić, M., Tasić, T., Marinović-Cincović, M.,& Živojinović, D.. (2023). Sterilized plum pomace biochar as a low-cost effective sorbent of environmental contaminants. in Journal of Water Process Engineering, 56, 104487.
https://doi.org/10.1016/j.jwpe.2023.104487

Katnić Đ, Porobić SJ, Lazarević-Pašti T, Kojić M, Tasić T, Marinović-Cincović M, Živojinović D. Sterilized plum pomace biochar as a low-cost effective sorbent of environmental contaminants. in Journal of Water Process Engineering. 2023;56:104487.
doi:10.1016/j.jwpe.2023.104487 .

Katnić, Đurica, Porobić, Slavica J., Lazarević-Pašti, Tamara, Kojić, Marija, Tasić, Tamara, Marinović-Cincović, Milena, Živojinović, Dragana, "Sterilized plum pomace biochar as a low-cost effective sorbent of environmental contaminants" in Journal of Water Process Engineering, 56 (2023):104487,
https://doi.org/10.1016/j.jwpe.2023.104487 . .

TY  - JOUR
AU  - Đolić, Maja
AU  - Ćujić, Mirjana
AU  - Stanišić, Tijana
AU  - Živojinović, Dragana
AU  - Ristić, Mirjana
AU  - Perić Grujić, Aleksandra
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5518
AB  - The Republic of Serbia generates the majority of its electricity at the thermal power plants (TE) Nikola Tesla, Kolubara, and Kostolac. Coal is extracted from the Kolubara basin, which produces approximately 70% of lignite (an average of 30 million tons per year), and the Kostolac basin, which produces 30% of lignite. Ash, fly ash, and slag are examples of coal combustion residues. Because of the high content of potentially hazardous elements such as As, Pb, Cd, and Cr, environmental pollution with ash and fly ash has been extensively researched. Stable isotopes of lead can be used to trace lead sources. It is possible to monitor the presence, transformation pathways, and environmental impact of Pb by determining its isotopic composition in coal and fly ash. For the first time, the isotopic composition of selected coal samples from the Kolubara and Kostolac mines, as well as fly ash from the Kolubara (A and B), Kostolac (A and B), and Nikola Tesla (TENT A3, A2, B2) thermal power plants, was investigated in this study. The obtained data for 206Pb/207Pb in coal serve as the foundation for ranking domestic coals, whereas the isotopic ratios 206Pb/207Pb and 208Pb/207Pb  in fly ash can be used to monitor and control lead pollution from investigated sources.
PB  - The Netherlands Press
T2  - Metallurgical and Materials Engineering
T1  - Contribution to the Serbian coal ranking and fly ash characterization using Pb isotopic ratio
EP  - 684
IS  - 4
SP  - 675
VL  - 28
DO  - 10.56801/MME931
ER  - 

@article{
author = "Đolić, Maja and Ćujić, Mirjana and Stanišić, Tijana and Živojinović, Dragana and Ristić, Mirjana and Perić Grujić, Aleksandra",
year = "2022",
abstract = "The Republic of Serbia generates the majority of its electricity at the thermal power plants (TE) Nikola Tesla, Kolubara, and Kostolac. Coal is extracted from the Kolubara basin, which produces approximately 70% of lignite (an average of 30 million tons per year), and the Kostolac basin, which produces 30% of lignite. Ash, fly ash, and slag are examples of coal combustion residues. Because of the high content of potentially hazardous elements such as As, Pb, Cd, and Cr, environmental pollution with ash and fly ash has been extensively researched. Stable isotopes of lead can be used to trace lead sources. It is possible to monitor the presence, transformation pathways, and environmental impact of Pb by determining its isotopic composition in coal and fly ash. For the first time, the isotopic composition of selected coal samples from the Kolubara and Kostolac mines, as well as fly ash from the Kolubara (A and B), Kostolac (A and B), and Nikola Tesla (TENT A3, A2, B2) thermal power plants, was investigated in this study. The obtained data for 206Pb/207Pb in coal serve as the foundation for ranking domestic coals, whereas the isotopic ratios 206Pb/207Pb and 208Pb/207Pb  in fly ash can be used to monitor and control lead pollution from investigated sources.",
publisher = "The Netherlands Press",
journal = "Metallurgical and Materials Engineering",
title = "Contribution to the Serbian coal ranking and fly ash characterization using Pb isotopic ratio",
pages = "684-675",
number = "4",
volume = "28",
doi = "10.56801/MME931"
}

Đolić, M., Ćujić, M., Stanišić, T., Živojinović, D., Ristić, M.,& Perić Grujić, A.. (2022). Contribution to the Serbian coal ranking and fly ash characterization using Pb isotopic ratio. in Metallurgical and Materials Engineering
The Netherlands Press., 28(4), 675-684.
https://doi.org/10.56801/MME931

Đolić M, Ćujić M, Stanišić T, Živojinović D, Ristić M, Perić Grujić A. Contribution to the Serbian coal ranking and fly ash characterization using Pb isotopic ratio. in Metallurgical and Materials Engineering. 2022;28(4):675-684.
doi:10.56801/MME931 .

Đolić, Maja, Ćujić, Mirjana, Stanišić, Tijana, Živojinović, Dragana, Ristić, Mirjana, Perić Grujić, Aleksandra, "Contribution to the Serbian coal ranking and fly ash characterization using Pb isotopic ratio" in Metallurgical and Materials Engineering, 28, no. 4 (2022):675-684,
https://doi.org/10.56801/MME931 . .

TY  - JOUR
AU  - Katnić, Đurica
AU  - Marinović-Cincović, Milena
AU  - Porobić, Slavica J.
AU  - Vujčić, Ivica
AU  - Šaponjić, Aleksandra
AU  - Sikirić, Biljana
AU  - Živojinović, Dragana
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5107
AB  - Redirecting waste biomass back into the economy can reduce their burden on the environment. The use of waste biomass for the production of fuels, value-added materials or natural fillers has significant economic and environmental benefits. Physico-chemical characterization of waste biomass (plum pomace and fig pomace) was done by proximate, elemental, biochemical analysis, FTIR and SEM analysis. The calorific value of both biomasses can be compared with the calorific value of lignite, which rises their potential use as a solid biofuel. The combustion behavior of biomass was investigated by thermal analysis techniques. Based on thermal degradation experiments performed at four heating rates a kinetic analysis of the biomass decomposition process was accomplished. The kinetic study was done using Kissinger method, Ozawa method, Flynn-Wall-Ozawa (FWO) method, Starink method, and Kissinger-Akahira-Sunose (KAS) method. The value of activation energy obtained by different kinetic methods was ∼210 kJ/mol for plum pomace and ∼162 kJ/mol for fig pomace. Estimated activation energy values were used to calculate thermodynamic parameters. In addition to the fact that the obtained results can serve as a useful reference for the design of pyrolysis reactors, this research has ecological significance because it solves the problem of solid waste disposal.
PB  - Elsevier Ltd
T2  - Journal of Cleaner Production
T1  - Characterization and kinetics of thermal decomposition behavior of plum and fig pomace biomass
SP  - 131637
VL  - 352
DO  - 10.1016/j.jclepro.2022.131637
ER  - 

@article{
author = "Katnić, Đurica and Marinović-Cincović, Milena and Porobić, Slavica J. and Vujčić, Ivica and Šaponjić, Aleksandra and Sikirić, Biljana and Živojinović, Dragana",
year = "2022",
abstract = "Redirecting waste biomass back into the economy can reduce their burden on the environment. The use of waste biomass for the production of fuels, value-added materials or natural fillers has significant economic and environmental benefits. Physico-chemical characterization of waste biomass (plum pomace and fig pomace) was done by proximate, elemental, biochemical analysis, FTIR and SEM analysis. The calorific value of both biomasses can be compared with the calorific value of lignite, which rises their potential use as a solid biofuel. The combustion behavior of biomass was investigated by thermal analysis techniques. Based on thermal degradation experiments performed at four heating rates a kinetic analysis of the biomass decomposition process was accomplished. The kinetic study was done using Kissinger method, Ozawa method, Flynn-Wall-Ozawa (FWO) method, Starink method, and Kissinger-Akahira-Sunose (KAS) method. The value of activation energy obtained by different kinetic methods was ∼210 kJ/mol for plum pomace and ∼162 kJ/mol for fig pomace. Estimated activation energy values were used to calculate thermodynamic parameters. In addition to the fact that the obtained results can serve as a useful reference for the design of pyrolysis reactors, this research has ecological significance because it solves the problem of solid waste disposal.",
publisher = "Elsevier Ltd",
journal = "Journal of Cleaner Production",
title = "Characterization and kinetics of thermal decomposition behavior of plum and fig pomace biomass",
pages = "131637",
volume = "352",
doi = "10.1016/j.jclepro.2022.131637"
}

Katnić, Đ., Marinović-Cincović, M., Porobić, S. J., Vujčić, I., Šaponjić, A., Sikirić, B.,& Živojinović, D.. (2022). Characterization and kinetics of thermal decomposition behavior of plum and fig pomace biomass. in Journal of Cleaner Production
Elsevier Ltd., 352, 131637.
https://doi.org/10.1016/j.jclepro.2022.131637

Katnić Đ, Marinović-Cincović M, Porobić SJ, Vujčić I, Šaponjić A, Sikirić B, Živojinović D. Characterization and kinetics of thermal decomposition behavior of plum and fig pomace biomass. in Journal of Cleaner Production. 2022;352:131637.
doi:10.1016/j.jclepro.2022.131637 .

Katnić, Đurica, Marinović-Cincović, Milena, Porobić, Slavica J., Vujčić, Ivica, Šaponjić, Aleksandra, Sikirić, Biljana, Živojinović, Dragana, "Characterization and kinetics of thermal decomposition behavior of plum and fig pomace biomass" in Journal of Cleaner Production, 352 (2022):131637,
https://doi.org/10.1016/j.jclepro.2022.131637 . .

TY  - JOUR
AU  - Vasic, Ljiljana
AU  - Živojinović, Dragana
AU  - Rajakovic-Ognjanovic, Vladana
AU  - Huang, Fen
AU  - Cao, Jianhua
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4962
AB  - To define the potential uses of groundwater, a detailed hydrochemical analysis was carried out in the Kuaj-Beljanica Massif at seven locations, in the eastern part of the Republic of Serbia. The hydrogeochemical analysis led to a better understanding of the hydrogeochemical processes occurring underground, as well as the existence and origin of groundwater heat sources. The chemical composition of the thermal groundwater indicates different formation conditions, the influence of different rock types and different physico-chemical processes with time and temperature variations on water quality. Better insight into the geochemical and thermal conditions of groundwater can identify the most prospective locations for geothermal applications such as indoor and outdoor space heating, sports, recreation and tourism, as well as industrial applications, with or without the additional use of heat pumps. Factor analysis (FA), especially principal component analysis (PCA) and cluster analysis (CA) were applied for the evaluation of the spatial/temporal variations of Kuaj-Beljanica thermal groundwater. It was concluded that PCA was the optimum method for explaining functional relationships between the chemical elements. After data reduction, three main factors controlling variability were identified. Hierarchical cluster analysis (HCA) was applied for sample differentiation according to sample location which resulted in the grouping of the examined location into three main groups according to their thermal or geochemical potential: Group I: lowest potential for any purpose; Group II: best thermal potential (wellness centres, agriculture and heating of different facilities and Group III: specific hydrogeochemical potential suitable for bottling or balneal tourism.
T2  - Environmental Earth Sciences
T1  - The subthermal potential of karstic groundwater of Kuaj-Beljanica region in Serbia estimated by the multivariate analysis
IS  - 3
VL  - 80
DO  - 10.1007/s12665-021-09392-1
ER  - 

@article{
author = "Vasic, Ljiljana and Živojinović, Dragana and Rajakovic-Ognjanovic, Vladana and Huang, Fen and Cao, Jianhua",
year = "2021",
abstract = "To define the potential uses of groundwater, a detailed hydrochemical analysis was carried out in the Kuaj-Beljanica Massif at seven locations, in the eastern part of the Republic of Serbia. The hydrogeochemical analysis led to a better understanding of the hydrogeochemical processes occurring underground, as well as the existence and origin of groundwater heat sources. The chemical composition of the thermal groundwater indicates different formation conditions, the influence of different rock types and different physico-chemical processes with time and temperature variations on water quality. Better insight into the geochemical and thermal conditions of groundwater can identify the most prospective locations for geothermal applications such as indoor and outdoor space heating, sports, recreation and tourism, as well as industrial applications, with or without the additional use of heat pumps. Factor analysis (FA), especially principal component analysis (PCA) and cluster analysis (CA) were applied for the evaluation of the spatial/temporal variations of Kuaj-Beljanica thermal groundwater. It was concluded that PCA was the optimum method for explaining functional relationships between the chemical elements. After data reduction, three main factors controlling variability were identified. Hierarchical cluster analysis (HCA) was applied for sample differentiation according to sample location which resulted in the grouping of the examined location into three main groups according to their thermal or geochemical potential: Group I: lowest potential for any purpose; Group II: best thermal potential (wellness centres, agriculture and heating of different facilities and Group III: specific hydrogeochemical potential suitable for bottling or balneal tourism.",
journal = "Environmental Earth Sciences",
title = "The subthermal potential of karstic groundwater of Kuaj-Beljanica region in Serbia estimated by the multivariate analysis",
number = "3",
volume = "80",
doi = "10.1007/s12665-021-09392-1"
}

Vasic, L., Živojinović, D., Rajakovic-Ognjanovic, V., Huang, F.,& Cao, J.. (2021). The subthermal potential of karstic groundwater of Kuaj-Beljanica region in Serbia estimated by the multivariate analysis. in Environmental Earth Sciences, 80(3).
https://doi.org/10.1007/s12665-021-09392-1

Vasic L, Živojinović D, Rajakovic-Ognjanovic V, Huang F, Cao J. The subthermal potential of karstic groundwater of Kuaj-Beljanica region in Serbia estimated by the multivariate analysis. in Environmental Earth Sciences. 2021;80(3).
doi:10.1007/s12665-021-09392-1 .

Vasic, Ljiljana, Živojinović, Dragana, Rajakovic-Ognjanovic, Vladana, Huang, Fen, Cao, Jianhua, "The subthermal potential of karstic groundwater of Kuaj-Beljanica region in Serbia estimated by the multivariate analysis" in Environmental Earth Sciences, 80, no. 3 (2021),
https://doi.org/10.1007/s12665-021-09392-1 . .

TY  - JOUR
AU  - Vasić, Ljiljana
AU  - Živojinović, Dragana
AU  - Rajaković-Ognjanović, Vladana
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4477
AB  - To define changes in hydrochemical composition from the recharge to the discharge zone of the complex Kucaj-Beljanica karst massif, located in eastern Serbia, on a quarterly basis within one hydrologic year, a physico-chemical analysis was performed, along with the determination of ions (cations and anions) and isotope C-13 content in rainwater, surface and groundwater (cold, sub-thermal and thermal). The multiparameter analysis of parameters was also used to determine the best combination and grouping of similar hydrochemical characteristics, as well as to determine the dependence of chemical parameters of the water, which may indicate the predominant complex geochemical underground processes. The results showed that the Ca2+ and dissolved oxygen O-2 content in water decreases with circulation depth; while, the content of all other observed elements increases as a result of complex geochemical processes that occur within the complex karst environment.
PB  - Springer, New York
T2  - Carbonates and Evaporites
T1  - Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge-discharge zone (Eastern Serbia case study)
IS  - 1
VL  - 35
DO  - 10.1007/s13146-019-00548-6
ER  - 

@article{
author = "Vasić, Ljiljana and Živojinović, Dragana and Rajaković-Ognjanović, Vladana",
year = "2020",
abstract = "To define changes in hydrochemical composition from the recharge to the discharge zone of the complex Kucaj-Beljanica karst massif, located in eastern Serbia, on a quarterly basis within one hydrologic year, a physico-chemical analysis was performed, along with the determination of ions (cations and anions) and isotope C-13 content in rainwater, surface and groundwater (cold, sub-thermal and thermal). The multiparameter analysis of parameters was also used to determine the best combination and grouping of similar hydrochemical characteristics, as well as to determine the dependence of chemical parameters of the water, which may indicate the predominant complex geochemical underground processes. The results showed that the Ca2+ and dissolved oxygen O-2 content in water decreases with circulation depth; while, the content of all other observed elements increases as a result of complex geochemical processes that occur within the complex karst environment.",
publisher = "Springer, New York",
journal = "Carbonates and Evaporites",
title = "Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge-discharge zone (Eastern Serbia case study)",
number = "1",
volume = "35",
doi = "10.1007/s13146-019-00548-6"
}

Vasić, L., Živojinović, D.,& Rajaković-Ognjanović, V.. (2020). Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge-discharge zone (Eastern Serbia case study). in Carbonates and Evaporites
Springer, New York., 35(1).
https://doi.org/10.1007/s13146-019-00548-6

Vasić L, Živojinović D, Rajaković-Ognjanović V. Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge-discharge zone (Eastern Serbia case study). in Carbonates and Evaporites. 2020;35(1).
doi:10.1007/s13146-019-00548-6 .

Vasić, Ljiljana, Živojinović, Dragana, Rajaković-Ognjanović, Vladana, "Hydrochemical changes and groundwater grouping data by multivariate statistical methods within one karst system: recharge-discharge zone (Eastern Serbia case study)" in Carbonates and Evaporites, 35, no. 1 (2020),
https://doi.org/10.1007/s13146-019-00548-6 . .

TY  - JOUR
AU  - Mijatović, Nevenka
AU  - Terzić, Anja
AU  - Miličić, Ljiljana
AU  - Živojinović, Dragana
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4557
AB  - Natural zeolite and bentonite were utilized as mineral additives in the mix-design of environmentally safe cement-based building materials. The adsorptive abilities of these two clayey raw materials, i.e. their affinity to immobilize heavy metal ions Zn2+, Ni2+, Pb2+ and Cu2+ were investigated. Singleand multi-solutions of Zn2+, Ni2+, Pb2+ and Cu2+ were prepared for the experiment. The obtained results were submitted to analysis via pseudo-first and pseudo-second order kinetic models. Langmuir and Freundlich isotherms were analyzed. Bentonite exhibited better adsorption affinity than zeolite towards all four investigated cations. As a proof, a leaching test was conducted on seven different cement binders with different mineral additives (fly ash, zeolite, bentonite). The leachates obtained on the samples of cement with addition of fly ash and clay (either zeolite or bentonite) contained lower concentrations of Zn2+, Ni2+, Pb2+ and Cu2+ ions than leachates obtained on the samples of cement binder with fly ash solely as a result of adsorption and hydration mechanisms that immobilized heavy metals within cementitious composites.
AB  - Prirodni zeolit i bentonit korišćeni su kao mineralni dodaci u mešavinskom dizajnu ekološki sigurnih građevinskih materijala na bazi cementa. Ispitane su adsorptivne sposobnosti ove dve glinene sirovine, tj. njihov afinitet da imobiliziraju jone teških metala Zn2+, Ni2+, Pb2+ i Cu2+. Za eksperiment su pripremljeni pojedinačni i multi-rastvori Zn2+, Ni2+, Pb2+ i Cu2+ . Dobijeni rezultati su analizirani pomoću kinetičkih modela pseudo prvog i pseudo drugog reda. Analizirane su izoterme Langmuira i Freundlicha. Bentonit je pokazao bolji adsorpcioni afinitet od zeolita prema sva četiri ispitivana katjona. Kao dokaz, ispitano je ispitivanje ispiranja na sedam različitih veziva za cement sa različitim mineralnim dodacima (leteći pepeo, zeolit, bentonit). Eluati dobijeni na uzorcima cementa sa dodatkom letećeg pepela i gline (bilo zeolita ili bentonita) sadržavale su niže koncentracije jona Zn2+, Ni2+, Pb2+ i Cu2+ u odnosu na eluat dobijen na uzorcima cementnog veziva sa letećim pepelom. Razlog za dobijanje ovakvih rezultata su adsorpcioni i hidratacioni mehanizmi koji imobiliziraju teške metale u cementnim kompozitima.
PB  - Engineering Society for Corrosion, Belgrade, Serbia
T2  - Zaštita materijala
T1  - Immobilization of heavy metal ions Zn2+, Ni2+, Pb2+ and Cu2+ in the structure of cement-based materials
T1  - Imobilizacija teških metalnih jona Zn2+, Ni2+, Pb2+ i Cu2+ u strukturi materijala na bazi cementa
EP  - 127
IS  - 2
SP  - 116
VL  - 61
DO  - 10.5937/zasmat2002116M
ER  - 

@article{
author = "Mijatović, Nevenka and Terzić, Anja and Miličić, Ljiljana and Živojinović, Dragana",
year = "2020",
abstract = "Natural zeolite and bentonite were utilized as mineral additives in the mix-design of environmentally safe cement-based building materials. The adsorptive abilities of these two clayey raw materials, i.e. their affinity to immobilize heavy metal ions Zn2+, Ni2+, Pb2+ and Cu2+ were investigated. Singleand multi-solutions of Zn2+, Ni2+, Pb2+ and Cu2+ were prepared for the experiment. The obtained results were submitted to analysis via pseudo-first and pseudo-second order kinetic models. Langmuir and Freundlich isotherms were analyzed. Bentonite exhibited better adsorption affinity than zeolite towards all four investigated cations. As a proof, a leaching test was conducted on seven different cement binders with different mineral additives (fly ash, zeolite, bentonite). The leachates obtained on the samples of cement with addition of fly ash and clay (either zeolite or bentonite) contained lower concentrations of Zn2+, Ni2+, Pb2+ and Cu2+ ions than leachates obtained on the samples of cement binder with fly ash solely as a result of adsorption and hydration mechanisms that immobilized heavy metals within cementitious composites., Prirodni zeolit i bentonit korišćeni su kao mineralni dodaci u mešavinskom dizajnu ekološki sigurnih građevinskih materijala na bazi cementa. Ispitane su adsorptivne sposobnosti ove dve glinene sirovine, tj. njihov afinitet da imobiliziraju jone teških metala Zn2+, Ni2+, Pb2+ i Cu2+. Za eksperiment su pripremljeni pojedinačni i multi-rastvori Zn2+, Ni2+, Pb2+ i Cu2+ . Dobijeni rezultati su analizirani pomoću kinetičkih modela pseudo prvog i pseudo drugog reda. Analizirane su izoterme Langmuira i Freundlicha. Bentonit je pokazao bolji adsorpcioni afinitet od zeolita prema sva četiri ispitivana katjona. Kao dokaz, ispitano je ispitivanje ispiranja na sedam različitih veziva za cement sa različitim mineralnim dodacima (leteći pepeo, zeolit, bentonit). Eluati dobijeni na uzorcima cementa sa dodatkom letećeg pepela i gline (bilo zeolita ili bentonita) sadržavale su niže koncentracije jona Zn2+, Ni2+, Pb2+ i Cu2+ u odnosu na eluat dobijen na uzorcima cementnog veziva sa letećim pepelom. Razlog za dobijanje ovakvih rezultata su adsorpcioni i hidratacioni mehanizmi koji imobiliziraju teške metale u cementnim kompozitima.",
publisher = "Engineering Society for Corrosion, Belgrade, Serbia",
journal = "Zaštita materijala",
title = "Immobilization of heavy metal ions Zn2+, Ni2+, Pb2+ and Cu2+ in the structure of cement-based materials, Imobilizacija teških metalnih jona Zn2+, Ni2+, Pb2+ i Cu2+ u strukturi materijala na bazi cementa",
pages = "127-116",
number = "2",
volume = "61",
doi = "10.5937/zasmat2002116M"
}

Mijatović, N., Terzić, A., Miličić, L.,& Živojinović, D.. (2020). Immobilization of heavy metal ions Zn2+, Ni2+, Pb2+ and Cu2+ in the structure of cement-based materials. in Zaštita materijala
Engineering Society for Corrosion, Belgrade, Serbia., 61(2), 116-127.
https://doi.org/10.5937/zasmat2002116M

Mijatović N, Terzić A, Miličić L, Živojinović D. Immobilization of heavy metal ions Zn2+, Ni2+, Pb2+ and Cu2+ in the structure of cement-based materials. in Zaštita materijala. 2020;61(2):116-127.
doi:10.5937/zasmat2002116M .

Mijatović, Nevenka, Terzić, Anja, Miličić, Ljiljana, Živojinović, Dragana, "Immobilization of heavy metal ions Zn2+, Ni2+, Pb2+ and Cu2+ in the structure of cement-based materials" in Zaštita materijala, 61, no. 2 (2020):116-127,
https://doi.org/10.5937/zasmat2002116M . .

TY  - JOUR
AU  - Mijatović, N.N.
AU  - Terzić, Anja
AU  - Pezo, Lato
AU  - Miličić, L.R.
AU  - Živojinović, Dragana
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4570
AB  - A modification of analytical procedure for energy-dispersive X-ray fluorescence (EDXRF) quantification of ten chemical elements (As, Ba, Cd, Co, Cr, Cu, Mo, Ni, Pb, Zn) in the leachates obtained from cement binders was developed. Twenty-nine testing samples were used in the experiment. All samples were based on Portland cement. Fly ash of different origin, zeolite and bentonite were employed as mineral additives in the cement binders. Distilled water was used as leachate. Validation of the modified EDXRF procedure was conducted in terms of limits of detection and quantification, working range, linearity, selectivity, precision, trueness, and robustness. Traceability of the procedure was established using certified reference materials. Uncertainty of measurement was confirmed via "in-house" laboratory validation approach. The expanded uncertainties for ten analysed elements were obtained for entire working range of EDXRF method. Robustness of the modified EDXRF procedure was assessed by means of chemometric in-house approach. The results obtained by modified X-ray fluorescence method were additionally correlated to those acquired by inductively coupled plasma optical emission spectrometry to confirm that EDXRF can be used as an effective and reliable alternative method for analysis of cement leachates.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Improvement and modification of energy-dispersive X-ray fluorescence method for determination of metal elements in cement leachates-chemometric approach
EP  - 15
SP  - 1
VL  - 85
DO  - 10.2298/JSC200501067M
ER  - 

@article{
author = "Mijatović, N.N. and Terzić, Anja and Pezo, Lato and Miličić, L.R. and Živojinović, Dragana",
year = "2020",
abstract = "A modification of analytical procedure for energy-dispersive X-ray fluorescence (EDXRF) quantification of ten chemical elements (As, Ba, Cd, Co, Cr, Cu, Mo, Ni, Pb, Zn) in the leachates obtained from cement binders was developed. Twenty-nine testing samples were used in the experiment. All samples were based on Portland cement. Fly ash of different origin, zeolite and bentonite were employed as mineral additives in the cement binders. Distilled water was used as leachate. Validation of the modified EDXRF procedure was conducted in terms of limits of detection and quantification, working range, linearity, selectivity, precision, trueness, and robustness. Traceability of the procedure was established using certified reference materials. Uncertainty of measurement was confirmed via "in-house" laboratory validation approach. The expanded uncertainties for ten analysed elements were obtained for entire working range of EDXRF method. Robustness of the modified EDXRF procedure was assessed by means of chemometric in-house approach. The results obtained by modified X-ray fluorescence method were additionally correlated to those acquired by inductively coupled plasma optical emission spectrometry to confirm that EDXRF can be used as an effective and reliable alternative method for analysis of cement leachates.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Improvement and modification of energy-dispersive X-ray fluorescence method for determination of metal elements in cement leachates-chemometric approach",
pages = "15-1",
volume = "85",
doi = "10.2298/JSC200501067M"
}

Mijatović, N.N., Terzić, A., Pezo, L., Miličić, L.R.,& Živojinović, D.. (2020). Improvement and modification of energy-dispersive X-ray fluorescence method for determination of metal elements in cement leachates-chemometric approach. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 85, 1-15.
https://doi.org/10.2298/JSC200501067M

Mijatović N, Terzić A, Pezo L, Miličić L, Živojinović D. Improvement and modification of energy-dispersive X-ray fluorescence method for determination of metal elements in cement leachates-chemometric approach. in Journal of the Serbian Chemical Society. 2020;85:1-15.
doi:10.2298/JSC200501067M .

Mijatović, N.N., Terzić, Anja, Pezo, Lato, Miličić, L.R., Živojinović, Dragana, "Improvement and modification of energy-dispersive X-ray fluorescence method for determination of metal elements in cement leachates-chemometric approach" in Journal of the Serbian Chemical Society, 85 (2020):1-15,
https://doi.org/10.2298/JSC200501067M . .

TY  - JOUR
AU  - Mijatovic, Nevenka N.
AU  - Terzic, Anja M.
AU  - Pezo, Lato L.
AU  - Milicic, Ljiljana R.
AU  - Živojinović, Dragana
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4747
AB  - A modification of an analytical procedure for the energy-dispersive X-ray fluorescence (EDXRF) quantification of ten chemical elements (As, Ba, Cd, Co, Cr, Cu, Mo, Ni, Pb and Zn) in the leachates obtained from cement binders was developed. Twenty-nine testing samples were used in the experiment. All samples were based on Portland cement. Fly ash of different origin, zeolite and bentonite were employed as mineral additives in the cement binders. Distilled water was used as the leachate. Validation of the modified EDXRF procedure was conducted in terms of limits of detection and quantification, working range, linearity, selectivity, precision, trueness, and robustness. Traceability of the procedure was established using certified reference materials. Uncertainty of measurement was confirmed via an "in-house" laboratory validation approach. The expanded uncertainties for the ten analysed elements were obtained for the entire working range of the EDXRF method. Robustness of the modified EDXRF procedure was assessed by means of a chemometric in-house approach. The results obtained by the modified X-ray fluorescence method were additionally correlated to those acquired by inductively coupled plasma optical emission spectrometry to confirm that EDXRF could be used as an effective and reliable alternative method for analysis of cement leachates.
T2  - Journal of the Serbian Chemical Society
T1  - Improvement and modification of the energy-dispersive X-ray fluorescence method for the determination of metal elements in cement leachates - A chemometric approach
EP  - 1619
IS  - 12
SP  - 1605
VL  - 85
DO  - 10.2298/JSC200501067M
ER  - 

@article{
author = "Mijatovic, Nevenka N. and Terzic, Anja M. and Pezo, Lato L. and Milicic, Ljiljana R. and Živojinović, Dragana",
year = "2020",
abstract = "A modification of an analytical procedure for the energy-dispersive X-ray fluorescence (EDXRF) quantification of ten chemical elements (As, Ba, Cd, Co, Cr, Cu, Mo, Ni, Pb and Zn) in the leachates obtained from cement binders was developed. Twenty-nine testing samples were used in the experiment. All samples were based on Portland cement. Fly ash of different origin, zeolite and bentonite were employed as mineral additives in the cement binders. Distilled water was used as the leachate. Validation of the modified EDXRF procedure was conducted in terms of limits of detection and quantification, working range, linearity, selectivity, precision, trueness, and robustness. Traceability of the procedure was established using certified reference materials. Uncertainty of measurement was confirmed via an "in-house" laboratory validation approach. The expanded uncertainties for the ten analysed elements were obtained for the entire working range of the EDXRF method. Robustness of the modified EDXRF procedure was assessed by means of a chemometric in-house approach. The results obtained by the modified X-ray fluorescence method were additionally correlated to those acquired by inductively coupled plasma optical emission spectrometry to confirm that EDXRF could be used as an effective and reliable alternative method for analysis of cement leachates.",
journal = "Journal of the Serbian Chemical Society",
title = "Improvement and modification of the energy-dispersive X-ray fluorescence method for the determination of metal elements in cement leachates - A chemometric approach",
pages = "1619-1605",
number = "12",
volume = "85",
doi = "10.2298/JSC200501067M"
}

Mijatovic, N. N., Terzic, A. M., Pezo, L. L., Milicic, L. R.,& Živojinović, D.. (2020). Improvement and modification of the energy-dispersive X-ray fluorescence method for the determination of metal elements in cement leachates - A chemometric approach. in Journal of the Serbian Chemical Society, 85(12), 1605-1619.
https://doi.org/10.2298/JSC200501067M

Mijatovic NN, Terzic AM, Pezo LL, Milicic LR, Živojinović D. Improvement and modification of the energy-dispersive X-ray fluorescence method for the determination of metal elements in cement leachates - A chemometric approach. in Journal of the Serbian Chemical Society. 2020;85(12):1605-1619.
doi:10.2298/JSC200501067M .

Mijatovic, Nevenka N., Terzic, Anja M., Pezo, Lato L., Milicic, Ljiljana R., Živojinović, Dragana, "Improvement and modification of the energy-dispersive X-ray fluorescence method for the determination of metal elements in cement leachates - A chemometric approach" in Journal of the Serbian Chemical Society, 85, no. 12 (2020):1605-1619,
https://doi.org/10.2298/JSC200501067M . .

TY  - CONF
AU  - Mijatović, Nevenka
AU  - Terzić, Anja
AU  - Miličić, Ljiljana
AU  - Živojinović, Dragana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7313
AB  - The novel global trends for waste materials processing and recycling, as well as new
European standards for sampling and testing of these materials, require better performances of
analytical methods for the chemical analysis and improvements regarding their matrices. In this
study, a new method for optical emission spectrometry with inductively coupled plasma (ICP-OES)
has been developed and subsequently validated for determination of 35 elements comprised in
leachates of fly ash and composites based on fly ash, i.e. cement pastes and mortars. Validation
performances and the uncertainty measurement were determined and calculated via three different
routes: validation method, participation in proficiency testing schemes and standard method. It is
proved that this method is acceptable for the determination of all 35 elements in this matrix. The
obtained results highlight a new simple and effective analyzing route for quantity determination of
undesired trace elements in fluids upon conducted leaching test.
PB  - Bor : University of Belgrade, Technical Faculty
C3  - Proceedings / XIII International Mineral Processing and Recycling Conference, MPRC, Belgrade, Serbia, 8-10 May 2019
T1  - Validation of ICP–OES procedure for major and trace elements determination in the leachates of fly ash and fly ash based composites
EP  - 76
SP  - 70
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7313
ER  - 

@conference{
author = "Mijatović, Nevenka and Terzić, Anja and Miličić, Ljiljana and Živojinović, Dragana",
year = "2019",
abstract = "The novel global trends for waste materials processing and recycling, as well as new
European standards for sampling and testing of these materials, require better performances of
analytical methods for the chemical analysis and improvements regarding their matrices. In this
study, a new method for optical emission spectrometry with inductively coupled plasma (ICP-OES)
has been developed and subsequently validated for determination of 35 elements comprised in
leachates of fly ash and composites based on fly ash, i.e. cement pastes and mortars. Validation
performances and the uncertainty measurement were determined and calculated via three different
routes: validation method, participation in proficiency testing schemes and standard method. It is
proved that this method is acceptable for the determination of all 35 elements in this matrix. The
obtained results highlight a new simple and effective analyzing route for quantity determination of
undesired trace elements in fluids upon conducted leaching test.",
publisher = "Bor : University of Belgrade, Technical Faculty",
journal = "Proceedings / XIII International Mineral Processing and Recycling Conference, MPRC, Belgrade, Serbia, 8-10 May 2019",
title = "Validation of ICP–OES procedure for major and trace elements determination in the leachates of fly ash and fly ash based composites",
pages = "76-70",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7313"
}

Mijatović, N., Terzić, A., Miličić, L.,& Živojinović, D.. (2019). Validation of ICP–OES procedure for major and trace elements determination in the leachates of fly ash and fly ash based composites. in Proceedings / XIII International Mineral Processing and Recycling Conference, MPRC, Belgrade, Serbia, 8-10 May 2019
Bor : University of Belgrade, Technical Faculty., 70-76.
https://hdl.handle.net/21.15107/rcub_technorep_7313

Mijatović N, Terzić A, Miličić L, Živojinović D. Validation of ICP–OES procedure for major and trace elements determination in the leachates of fly ash and fly ash based composites. in Proceedings / XIII International Mineral Processing and Recycling Conference, MPRC, Belgrade, Serbia, 8-10 May 2019. 2019;:70-76.
https://hdl.handle.net/21.15107/rcub_technorep_7313 .

Mijatović, Nevenka, Terzić, Anja, Miličić, Ljiljana, Živojinović, Dragana, "Validation of ICP–OES procedure for major and trace elements determination in the leachates of fly ash and fly ash based composites" in Proceedings / XIII International Mineral Processing and Recycling Conference, MPRC, Belgrade, Serbia, 8-10 May 2019 (2019):70-76,
https://hdl.handle.net/21.15107/rcub_technorep_7313 .

TY  - JOUR
AU  - Mijatović, Nevenka
AU  - Terzić, Anja
AU  - Pezo, Lato
AU  - Milicić, Ljiljana
AU  - Živojinović, Dragana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4097
AB  - Adjustment and subsequent validation of energy-dispersive X-ray fluorescence (ED-XRF) method for cement based binders with addition of mineral raw materials (fly ash, zeolite and bentonite) was conducted. Eighteen chemical elements present in the material composition were analyzed: ten major elements (Si, Al, Fe, Ca, Mg, S, Na, K, Ti, P) and eight trace elements (Cr, Zn, Cu, As, Ni, Pb, Sr, Mn). Thirty-five samples of either certified reference materials or reference materials of cement, fly ash and clay were utilized during adjustment and optimization of the investigated ED-XRF procedure. The method was consecutively validated in terms of selectivity, precision, working range, linearity, accuracy, robustness, limits of detection and quantification. Thirty-two samples in total, i.e. three certified reference materials and twenty-nine reference materials, were simultaneously analyzed by ED-XRF and inductively coupled plasma optical emission spectrometry (ICP-OES). Comparison of the outputs of monitored methods showed infinitesimally small differences, as correlation coefficients were extremely good (approximate to 1), which highlighted ED-XRF as highly satiable alternative for ICP-OES for the chemical analysis of cement binders.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Spectrochimica Acta Part B-Atomic Spectroscopy
T1  - Validation of energy-dispersive X-ray fluorescence procedure for determination of major and trace elements present in the cement based composites
SP  - 105729
VL  - 162
DO  - 10.1016/j.sab.2019.105729
ER  - 

@article{
author = "Mijatović, Nevenka and Terzić, Anja and Pezo, Lato and Milicić, Ljiljana and Živojinović, Dragana",
year = "2019",
abstract = "Adjustment and subsequent validation of energy-dispersive X-ray fluorescence (ED-XRF) method for cement based binders with addition of mineral raw materials (fly ash, zeolite and bentonite) was conducted. Eighteen chemical elements present in the material composition were analyzed: ten major elements (Si, Al, Fe, Ca, Mg, S, Na, K, Ti, P) and eight trace elements (Cr, Zn, Cu, As, Ni, Pb, Sr, Mn). Thirty-five samples of either certified reference materials or reference materials of cement, fly ash and clay were utilized during adjustment and optimization of the investigated ED-XRF procedure. The method was consecutively validated in terms of selectivity, precision, working range, linearity, accuracy, robustness, limits of detection and quantification. Thirty-two samples in total, i.e. three certified reference materials and twenty-nine reference materials, were simultaneously analyzed by ED-XRF and inductively coupled plasma optical emission spectrometry (ICP-OES). Comparison of the outputs of monitored methods showed infinitesimally small differences, as correlation coefficients were extremely good (approximate to 1), which highlighted ED-XRF as highly satiable alternative for ICP-OES for the chemical analysis of cement binders.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Spectrochimica Acta Part B-Atomic Spectroscopy",
title = "Validation of energy-dispersive X-ray fluorescence procedure for determination of major and trace elements present in the cement based composites",
pages = "105729",
volume = "162",
doi = "10.1016/j.sab.2019.105729"
}

Mijatović, N., Terzić, A., Pezo, L., Milicić, L.,& Živojinović, D.. (2019). Validation of energy-dispersive X-ray fluorescence procedure for determination of major and trace elements present in the cement based composites. in Spectrochimica Acta Part B-Atomic Spectroscopy
Pergamon-Elsevier Science Ltd, Oxford., 162, 105729.
https://doi.org/10.1016/j.sab.2019.105729

Mijatović N, Terzić A, Pezo L, Milicić L, Živojinović D. Validation of energy-dispersive X-ray fluorescence procedure for determination of major and trace elements present in the cement based composites. in Spectrochimica Acta Part B-Atomic Spectroscopy. 2019;162:105729.
doi:10.1016/j.sab.2019.105729 .

Mijatović, Nevenka, Terzić, Anja, Pezo, Lato, Milicić, Ljiljana, Živojinović, Dragana, "Validation of energy-dispersive X-ray fluorescence procedure for determination of major and trace elements present in the cement based composites" in Spectrochimica Acta Part B-Atomic Spectroscopy, 162 (2019):105729,
https://doi.org/10.1016/j.sab.2019.105729 . .

TY  - JOUR
AU  - Mijatović, Nevenka
AU  - Terzić, Anja
AU  - Pezo, Lato
AU  - Milicić, Ljiljana
AU  - Milosavljević, Aleksandra
AU  - Živojinović, Dragana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4137
AB  - New global tendencies for waste materials reusing in building materials are imposing the request for improved performances of chemical analysis methods and the improvements of matrices used. A new method for optical emission spectrometry with inductively coupled plasma (ICP-OES) is developed and validated for the chemical analysis (35 elements: Al, Be, Cd, So, Cr, Cu, Fe, Mn, Mo, Ni, V, Mo, Zn, Pb , Bi, Si, Zr, W, As, Se, Sb, Sn, Ti, Ba, B, Ag, Mg, Ca, K, Na, S, P, Ga, In, Li) in leachate of fly ash. Validation performances and the uncertainty of measurement were resolved. Uncertainty of measurements were resolved by three routes: validation procedure, participation in proficiency testing (PT) schemes and standard method. The obtained method is a new simple and effective analyzing route for determination of undesired trace elements and their quantity comprised in leachates of fly ash, and leachates of building materials with addition of fly ash (cement binders and mortars). In order to prove its accuracy and precision, the developed method was employed on laboratory samples of cement binders and mortars. Results were compared with limit values provided in the standard. Multivariate analyses, i.e. cluster analysis and principal component analysis, were applied to establish interrelations between analyzed samples, and to certify the developed ICP-OES method.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Novel Approach for Determination of Potentially Toxic Elements via ICP-OES in Aqueous Solutions of Building Materials with Industrial Byproduct Addition
EP  - 444
IS  - 4
SP  - 429
VL  - 51
DO  - 10.2298/SOS1904429M
ER  - 

@article{
author = "Mijatović, Nevenka and Terzić, Anja and Pezo, Lato and Milicić, Ljiljana and Milosavljević, Aleksandra and Živojinović, Dragana",
year = "2019",
abstract = "New global tendencies for waste materials reusing in building materials are imposing the request for improved performances of chemical analysis methods and the improvements of matrices used. A new method for optical emission spectrometry with inductively coupled plasma (ICP-OES) is developed and validated for the chemical analysis (35 elements: Al, Be, Cd, So, Cr, Cu, Fe, Mn, Mo, Ni, V, Mo, Zn, Pb , Bi, Si, Zr, W, As, Se, Sb, Sn, Ti, Ba, B, Ag, Mg, Ca, K, Na, S, P, Ga, In, Li) in leachate of fly ash. Validation performances and the uncertainty of measurement were resolved. Uncertainty of measurements were resolved by three routes: validation procedure, participation in proficiency testing (PT) schemes and standard method. The obtained method is a new simple and effective analyzing route for determination of undesired trace elements and their quantity comprised in leachates of fly ash, and leachates of building materials with addition of fly ash (cement binders and mortars). In order to prove its accuracy and precision, the developed method was employed on laboratory samples of cement binders and mortars. Results were compared with limit values provided in the standard. Multivariate analyses, i.e. cluster analysis and principal component analysis, were applied to establish interrelations between analyzed samples, and to certify the developed ICP-OES method.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Novel Approach for Determination of Potentially Toxic Elements via ICP-OES in Aqueous Solutions of Building Materials with Industrial Byproduct Addition",
pages = "444-429",
number = "4",
volume = "51",
doi = "10.2298/SOS1904429M"
}

Mijatović, N., Terzić, A., Pezo, L., Milicić, L., Milosavljević, A.,& Živojinović, D.. (2019). Novel Approach for Determination of Potentially Toxic Elements via ICP-OES in Aqueous Solutions of Building Materials with Industrial Byproduct Addition. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 51(4), 429-444.
https://doi.org/10.2298/SOS1904429M

Mijatović N, Terzić A, Pezo L, Milicić L, Milosavljević A, Živojinović D. Novel Approach for Determination of Potentially Toxic Elements via ICP-OES in Aqueous Solutions of Building Materials with Industrial Byproduct Addition. in Science of Sintering. 2019;51(4):429-444.
doi:10.2298/SOS1904429M .

Mijatović, Nevenka, Terzić, Anja, Pezo, Lato, Milicić, Ljiljana, Milosavljević, Aleksandra, Živojinović, Dragana, "Novel Approach for Determination of Potentially Toxic Elements via ICP-OES in Aqueous Solutions of Building Materials with Industrial Byproduct Addition" in Science of Sintering, 51, no. 4 (2019):429-444,
https://doi.org/10.2298/SOS1904429M . .

TY  - JOUR
AU  - Mijatović, Nevenka
AU  - Terzić, Anja
AU  - Pezo, Lato
AU  - Milicić, Ljiljana
AU  - Živojinović, Dragana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5039
AB  - Adjustment and subsequent validation of energy-dispersive X-ray fluorescence (ED-XRF) method for cement based binders with addition of mineral raw materials (fly ash, zeolite and bentonite) was conducted. Eighteen chemical elements present in the material composition were analyzed: ten major elements (Si, Al, Fe, Ca, Mg, S, Na, K, Ti, P) and eight trace elements (Cr, Zn, Cu, As, Ni, Pb, Sr, Mn). Thirty-five samples of either certified reference materials or reference materials of cement, fly ash and clay were utilized during adjustment and optimization of the investigated ED-XRF procedure. The method was consecutively validated in terms of selectivity, precision, working range, linearity, accuracy, robustness, limits of detection and quantification. Thirty-two samples in total, i.e. three certified reference materials and twenty-nine reference materials, were simultaneously analyzed by ED-XRF and inductively coupled plasma optical emission spectrometry (ICP-OES). Comparison of the outputs of monitored methods showed infinitesimally small differences, as correlation coefficients were extremely good (≈1), which highlighted ED-XRF as highly satiable alternative for ICP-OES for the chemical analysis of cement binders.
PB  - Elsevier B.V.
T2  - Spectrochimica Acta - Part B Atomic Spectroscopy
T1  - Validation of energy-dispersive X-ray fluorescence procedure for determination of major and trace elements present in the cement based composites
SP  - 105729
VL  - 162
DO  - 10.1016/j.sab.2019.105729
ER  - 

@article{
author = "Mijatović, Nevenka and Terzić, Anja and Pezo, Lato and Milicić, Ljiljana and Živojinović, Dragana",
year = "2019",
abstract = "Adjustment and subsequent validation of energy-dispersive X-ray fluorescence (ED-XRF) method for cement based binders with addition of mineral raw materials (fly ash, zeolite and bentonite) was conducted. Eighteen chemical elements present in the material composition were analyzed: ten major elements (Si, Al, Fe, Ca, Mg, S, Na, K, Ti, P) and eight trace elements (Cr, Zn, Cu, As, Ni, Pb, Sr, Mn). Thirty-five samples of either certified reference materials or reference materials of cement, fly ash and clay were utilized during adjustment and optimization of the investigated ED-XRF procedure. The method was consecutively validated in terms of selectivity, precision, working range, linearity, accuracy, robustness, limits of detection and quantification. Thirty-two samples in total, i.e. three certified reference materials and twenty-nine reference materials, were simultaneously analyzed by ED-XRF and inductively coupled plasma optical emission spectrometry (ICP-OES). Comparison of the outputs of monitored methods showed infinitesimally small differences, as correlation coefficients were extremely good (≈1), which highlighted ED-XRF as highly satiable alternative for ICP-OES for the chemical analysis of cement binders.",
publisher = "Elsevier B.V.",
journal = "Spectrochimica Acta - Part B Atomic Spectroscopy",
title = "Validation of energy-dispersive X-ray fluorescence procedure for determination of major and trace elements present in the cement based composites",
pages = "105729",
volume = "162",
doi = "10.1016/j.sab.2019.105729"
}

Mijatović, N., Terzić, A., Pezo, L., Milicić, L.,& Živojinović, D.. (2019). Validation of energy-dispersive X-ray fluorescence procedure for determination of major and trace elements present in the cement based composites. in Spectrochimica Acta - Part B Atomic Spectroscopy
Elsevier B.V.., 162, 105729.
https://doi.org/10.1016/j.sab.2019.105729

Mijatović N, Terzić A, Pezo L, Milicić L, Živojinović D. Validation of energy-dispersive X-ray fluorescence procedure for determination of major and trace elements present in the cement based composites. in Spectrochimica Acta - Part B Atomic Spectroscopy. 2019;162:105729.
doi:10.1016/j.sab.2019.105729 .

Mijatović, Nevenka, Terzić, Anja, Pezo, Lato, Milicić, Ljiljana, Živojinović, Dragana, "Validation of energy-dispersive X-ray fluorescence procedure for determination of major and trace elements present in the cement based composites" in Spectrochimica Acta - Part B Atomic Spectroscopy, 162 (2019):105729,
https://doi.org/10.1016/j.sab.2019.105729 . .

TY  - JOUR
AU  - Barać, Nemanja
AU  - Škrivanj, Sandra B.
AU  - Bukumirić, Zoran
AU  - Živojinović, Dragana
AU  - Manojlović, Dragan D.
AU  - Barać, Milan
AU  - Petrović, Rada
AU  - Ćorac, Aleksandar
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3263
AB  - This work investigates the influence of a high-magnitude flood event on heavy elements (HEs) pollution and mobility in the agricultural soils along Ibar River in Southern Serbia and Northern Kosovo. The study area was one of the most important Pb/Zn industrial regions in Europe. Soil samples (n = 50) collected before and after the floods in May 2014 were subjected to the sequential extraction procedure proposed by the Community Bureau of Reference (BCR). The results indicated that the floods significantly increased not only the pseudo total concentrations of HEs in the soil but also their mobile and potentially bioavailable amounts. Moreover, higher concentrations (both pseudo total and potentially bioavailable) were found in the agricultural soils closer to the industrial hotspots. Principal component analysis and hierarchical cluster analysis successfully grouped the analyzed elements according to their anthropogenic or natural origin. The floods significantly increased the potential ecological risk of HEs associated with Pb/Zn industrial activities in the study area. The potential ecological risk of Cd after the floods was highest and should be of special concern.
PB  - Springer Heidelberg, Heidelberg
T2  - Environmental Science and Pollution Research
T1  - Distribution and mobility of heavy elements in floodplain agricultural soils along the Ibar River (Southern Serbia and Northern Kosovo). Chemometric investigation of pollutant sources and ecological risk assessment
EP  - 9011
IS  - 9
SP  - 9000
VL  - 23
DO  - 10.1007/s11356-016-6142-2
ER  - 

@article{
author = "Barać, Nemanja and Škrivanj, Sandra B. and Bukumirić, Zoran and Živojinović, Dragana and Manojlović, Dragan D. and Barać, Milan and Petrović, Rada and Ćorac, Aleksandar",
year = "2016",
abstract = "This work investigates the influence of a high-magnitude flood event on heavy elements (HEs) pollution and mobility in the agricultural soils along Ibar River in Southern Serbia and Northern Kosovo. The study area was one of the most important Pb/Zn industrial regions in Europe. Soil samples (n = 50) collected before and after the floods in May 2014 were subjected to the sequential extraction procedure proposed by the Community Bureau of Reference (BCR). The results indicated that the floods significantly increased not only the pseudo total concentrations of HEs in the soil but also their mobile and potentially bioavailable amounts. Moreover, higher concentrations (both pseudo total and potentially bioavailable) were found in the agricultural soils closer to the industrial hotspots. Principal component analysis and hierarchical cluster analysis successfully grouped the analyzed elements according to their anthropogenic or natural origin. The floods significantly increased the potential ecological risk of HEs associated with Pb/Zn industrial activities in the study area. The potential ecological risk of Cd after the floods was highest and should be of special concern.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Environmental Science and Pollution Research",
title = "Distribution and mobility of heavy elements in floodplain agricultural soils along the Ibar River (Southern Serbia and Northern Kosovo). Chemometric investigation of pollutant sources and ecological risk assessment",
pages = "9011-9000",
number = "9",
volume = "23",
doi = "10.1007/s11356-016-6142-2"
}

Barać, N., Škrivanj, S. B., Bukumirić, Z., Živojinović, D., Manojlović, D. D., Barać, M., Petrović, R.,& Ćorac, A.. (2016). Distribution and mobility of heavy elements in floodplain agricultural soils along the Ibar River (Southern Serbia and Northern Kosovo). Chemometric investigation of pollutant sources and ecological risk assessment. in Environmental Science and Pollution Research
Springer Heidelberg, Heidelberg., 23(9), 9000-9011.
https://doi.org/10.1007/s11356-016-6142-2

Barać N, Škrivanj SB, Bukumirić Z, Živojinović D, Manojlović DD, Barać M, Petrović R, Ćorac A. Distribution and mobility of heavy elements in floodplain agricultural soils along the Ibar River (Southern Serbia and Northern Kosovo). Chemometric investigation of pollutant sources and ecological risk assessment. in Environmental Science and Pollution Research. 2016;23(9):9000-9011.
doi:10.1007/s11356-016-6142-2 .

Barać, Nemanja, Škrivanj, Sandra B., Bukumirić, Zoran, Živojinović, Dragana, Manojlović, Dragan D., Barać, Milan, Petrović, Rada, Ćorac, Aleksandar, "Distribution and mobility of heavy elements in floodplain agricultural soils along the Ibar River (Southern Serbia and Northern Kosovo). Chemometric investigation of pollutant sources and ecological risk assessment" in Environmental Science and Pollution Research, 23, no. 9 (2016):9000-9011,
https://doi.org/10.1007/s11356-016-6142-2 . .

TY  - JOUR
AU  - Barać, Nemanja
AU  - Škrivanj, Sandra B.
AU  - Mutić, Jelena
AU  - Manojlović, Dragan D.
AU  - Bukumirić, Zoran
AU  - Živojinović, Dragana
AU  - Petrović, Rada
AU  - Ćorac, Aleksandar
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3311
AB  - Improved understanding of the relationships between heavy metals fractionation in agricultural soils and biological uptake could be obtained by analysing samples of biota in parallel with sequential extraction of their grown media. The overall goals of this study were to identify the characteristics of metal fractions and their bioavailability to maize and potato plants in the agricultural land of the Ibar River in southern Serbia and northern Kosovo. The concentrations of Pb, Zn, Cd, Ni, Cr and Cu in soil and vegetable samples were determined by the ICP-OES method. Pb/Zn production and industrial waste disposal significantly increased the pseudo-total concentrations of heavy metals in the soil together with their mobile and potentially bioavailable amounts. The Pb concentrations in the vegetable samples were generally above the EU maximum permitted concentrations in foodstuffs. However, the concentrations of Zn, Ni, Cr and Cu in the vegetables were below the critical levels. The results of the present study indicated that the intensive industrial production of Pb/Zn over the years and permanent pollution were responsible for the environmental contamination by heavy metals in the study area, particularly by Pb and Zn. The quantity of the mobile and potentially bioavailable heavy metals in the studied soils threatens the quality of Zea mays L. and Solanum tuberosum L. crops, with a real risk that these elements could enter the food chain.
PB  - Springer International Publishing Ag, Cham
T2  - Water Air and Soil Pollution
T1  - Heavy Metals Fractionation in Agricultural Soils of Pb/Zn Mining Region and Their Transfer to Selected Vegetables
IS  - 12
VL  - 227
DO  - 10.1007/s11270-016-3177-4
ER  - 

@article{
author = "Barać, Nemanja and Škrivanj, Sandra B. and Mutić, Jelena and Manojlović, Dragan D. and Bukumirić, Zoran and Živojinović, Dragana and Petrović, Rada and Ćorac, Aleksandar",
year = "2016",
abstract = "Improved understanding of the relationships between heavy metals fractionation in agricultural soils and biological uptake could be obtained by analysing samples of biota in parallel with sequential extraction of their grown media. The overall goals of this study were to identify the characteristics of metal fractions and their bioavailability to maize and potato plants in the agricultural land of the Ibar River in southern Serbia and northern Kosovo. The concentrations of Pb, Zn, Cd, Ni, Cr and Cu in soil and vegetable samples were determined by the ICP-OES method. Pb/Zn production and industrial waste disposal significantly increased the pseudo-total concentrations of heavy metals in the soil together with their mobile and potentially bioavailable amounts. The Pb concentrations in the vegetable samples were generally above the EU maximum permitted concentrations in foodstuffs. However, the concentrations of Zn, Ni, Cr and Cu in the vegetables were below the critical levels. The results of the present study indicated that the intensive industrial production of Pb/Zn over the years and permanent pollution were responsible for the environmental contamination by heavy metals in the study area, particularly by Pb and Zn. The quantity of the mobile and potentially bioavailable heavy metals in the studied soils threatens the quality of Zea mays L. and Solanum tuberosum L. crops, with a real risk that these elements could enter the food chain.",
publisher = "Springer International Publishing Ag, Cham",
journal = "Water Air and Soil Pollution",
title = "Heavy Metals Fractionation in Agricultural Soils of Pb/Zn Mining Region and Their Transfer to Selected Vegetables",
number = "12",
volume = "227",
doi = "10.1007/s11270-016-3177-4"
}

Barać, N., Škrivanj, S. B., Mutić, J., Manojlović, D. D., Bukumirić, Z., Živojinović, D., Petrović, R.,& Ćorac, A.. (2016). Heavy Metals Fractionation in Agricultural Soils of Pb/Zn Mining Region and Their Transfer to Selected Vegetables. in Water Air and Soil Pollution
Springer International Publishing Ag, Cham., 227(12).
https://doi.org/10.1007/s11270-016-3177-4

Barać N, Škrivanj SB, Mutić J, Manojlović DD, Bukumirić Z, Živojinović D, Petrović R, Ćorac A. Heavy Metals Fractionation in Agricultural Soils of Pb/Zn Mining Region and Their Transfer to Selected Vegetables. in Water Air and Soil Pollution. 2016;227(12).
doi:10.1007/s11270-016-3177-4 .

Barać, Nemanja, Škrivanj, Sandra B., Mutić, Jelena, Manojlović, Dragan D., Bukumirić, Zoran, Živojinović, Dragana, Petrović, Rada, Ćorac, Aleksandar, "Heavy Metals Fractionation in Agricultural Soils of Pb/Zn Mining Region and Their Transfer to Selected Vegetables" in Water Air and Soil Pollution, 227, no. 12 (2016),
https://doi.org/10.1007/s11270-016-3177-4 . .

TY  - CONF
AU  - Živojinović, Dragana Z.
AU  - Lukić, Nataša A.
AU  - Ražić, Slavica S.
AU  - Onjia, Antonije E.
AU  - Rajaković, Ljubinka V.
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7131
PB  - Beograd : Srpsko hemijsko društvo
C3  - Knjiga izvoda / 7. Simpozijum Hemija i Zaštita životne sredine sa međunarodnim učešćem, EnviroChem 2015, Palić, Srbija, 9-12. Jun 2015
T1  - Značaj primene multivarijacione statistike analize u praćenju parametara kvaliteta vode
T1  - The importance of multivariate statistical analysis in monitoring of water quality parameters
EP  - 66
SP  - 65
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7131
ER  - 

@conference{
author = "Živojinović, Dragana Z. and Lukić, Nataša A. and Ražić, Slavica S. and Onjia, Antonije E. and Rajaković, Ljubinka V.",
year = "2015",
publisher = "Beograd : Srpsko hemijsko društvo",
journal = "Knjiga izvoda / 7. Simpozijum Hemija i Zaštita životne sredine sa međunarodnim učešćem, EnviroChem 2015, Palić, Srbija, 9-12. Jun 2015",
title = "Značaj primene multivarijacione statistike analize u praćenju parametara kvaliteta vode, The importance of multivariate statistical analysis in monitoring of water quality parameters",
pages = "66-65",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7131"
}

Živojinović, D. Z., Lukić, N. A., Ražić, S. S., Onjia, A. E.,& Rajaković, L. V.. (2015). Značaj primene multivarijacione statistike analize u praćenju parametara kvaliteta vode. in Knjiga izvoda / 7. Simpozijum Hemija i Zaštita životne sredine sa međunarodnim učešćem, EnviroChem 2015, Palić, Srbija, 9-12. Jun 2015
Beograd : Srpsko hemijsko društvo., 65-66.
https://hdl.handle.net/21.15107/rcub_technorep_7131

Živojinović DZ, Lukić NA, Ražić SS, Onjia AE, Rajaković LV. Značaj primene multivarijacione statistike analize u praćenju parametara kvaliteta vode. in Knjiga izvoda / 7. Simpozijum Hemija i Zaštita životne sredine sa međunarodnim učešćem, EnviroChem 2015, Palić, Srbija, 9-12. Jun 2015. 2015;:65-66.
https://hdl.handle.net/21.15107/rcub_technorep_7131 .

Živojinović, Dragana Z., Lukić, Nataša A., Ražić, Slavica S., Onjia, Antonije E., Rajaković, Ljubinka V., "Značaj primene multivarijacione statistike analize u praćenju parametara kvaliteta vode" in Knjiga izvoda / 7. Simpozijum Hemija i Zaštita životne sredine sa međunarodnim učešćem, EnviroChem 2015, Palić, Srbija, 9-12. Jun 2015 (2015):65-66,
https://hdl.handle.net/21.15107/rcub_technorep_7131 .

TY  - JOUR
AU  - Šekuljica, Nataša
AU  - Prlainović, Nevena
AU  - Stefanović, Andrea
AU  - Žuža, Milena
AU  - Čičkarić, Dragana Z.
AU  - Mijin, Dušan
AU  - Knežević-Jugović, Zorica
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2879
AB  - Two anthraquinonic dyes, C.I. Acid Blue 225 and C.I. Acid Violet 109, were used as models to explore the feasibility of using the horseradish peroxidase enzyme (HRP) in the practical decolorization of anthraquinonic dyes in wastewater. The influence of process parameters such as enzyme concentration, hydrogen peroxide concentration, temperature, dye concentration, and pH was examined. The pH and temperature activity profiles were similar for decolorization of both dyes. Under the optimal conditions, 94.7% of C.I. Acid Violet 109 from aqueous solution was decolorized (treatment time 15 min, enzyme concentration 0.15 IU/mL, hydrogen peroxide concentration 0.4 mM, dye concentration 30 mg/L, pH 4, and temperature 24°C) and 89.36% of C.I. Acid Blue 225 (32 min, enzyme concentration 0.15 IU/mL, hydrogen peroxide concentration 0.04 mM, dye concentration 30 mg/L, pH 5, and temperature 24°C). The mechanism of both reactions has been proven to follow the two substrate ping-pong mechanism with substrate inhibition, revealing the formation of a nonproductive or dead-end complex between dye and HRP or between Hand the oxidized form of the enzyme. Both chemical oxygen demand and total organic carbon values showed that there was a reduction in toxicity after the enzymatic treatment. This study verifies the viability of use of horseradish peroxidase for the wastewaters treatment of similar anthraquinonic dyes.
PB  - Hindawi Limited
T2  - Scientific World Journal
T1  - Decolorization of anthraquinonic dyes from textile effluent using horseradish peroxidase: Optimization and kinetic study
VL  - 2015
DO  - 10.1155/2015/371625
ER  - 

@article{
author = "Šekuljica, Nataša and Prlainović, Nevena and Stefanović, Andrea and Žuža, Milena and Čičkarić, Dragana Z. and Mijin, Dušan and Knežević-Jugović, Zorica",
year = "2015",
abstract = "Two anthraquinonic dyes, C.I. Acid Blue 225 and C.I. Acid Violet 109, were used as models to explore the feasibility of using the horseradish peroxidase enzyme (HRP) in the practical decolorization of anthraquinonic dyes in wastewater. The influence of process parameters such as enzyme concentration, hydrogen peroxide concentration, temperature, dye concentration, and pH was examined. The pH and temperature activity profiles were similar for decolorization of both dyes. Under the optimal conditions, 94.7% of C.I. Acid Violet 109 from aqueous solution was decolorized (treatment time 15 min, enzyme concentration 0.15 IU/mL, hydrogen peroxide concentration 0.4 mM, dye concentration 30 mg/L, pH 4, and temperature 24°C) and 89.36% of C.I. Acid Blue 225 (32 min, enzyme concentration 0.15 IU/mL, hydrogen peroxide concentration 0.04 mM, dye concentration 30 mg/L, pH 5, and temperature 24°C). The mechanism of both reactions has been proven to follow the two substrate ping-pong mechanism with substrate inhibition, revealing the formation of a nonproductive or dead-end complex between dye and HRP or between Hand the oxidized form of the enzyme. Both chemical oxygen demand and total organic carbon values showed that there was a reduction in toxicity after the enzymatic treatment. This study verifies the viability of use of horseradish peroxidase for the wastewaters treatment of similar anthraquinonic dyes.",
publisher = "Hindawi Limited",
journal = "Scientific World Journal",
title = "Decolorization of anthraquinonic dyes from textile effluent using horseradish peroxidase: Optimization and kinetic study",
volume = "2015",
doi = "10.1155/2015/371625"
}

Šekuljica, N., Prlainović, N., Stefanović, A., Žuža, M., Čičkarić, D. Z., Mijin, D.,& Knežević-Jugović, Z.. (2015). Decolorization of anthraquinonic dyes from textile effluent using horseradish peroxidase: Optimization and kinetic study. in Scientific World Journal
Hindawi Limited., 2015.
https://doi.org/10.1155/2015/371625

Šekuljica N, Prlainović N, Stefanović A, Žuža M, Čičkarić DZ, Mijin D, Knežević-Jugović Z. Decolorization of anthraquinonic dyes from textile effluent using horseradish peroxidase: Optimization and kinetic study. in Scientific World Journal. 2015;2015.
doi:10.1155/2015/371625 .

Šekuljica, Nataša, Prlainović, Nevena, Stefanović, Andrea, Žuža, Milena, Čičkarić, Dragana Z., Mijin, Dušan, Knežević-Jugović, Zorica, "Decolorization of anthraquinonic dyes from textile effluent using horseradish peroxidase: Optimization and kinetic study" in Scientific World Journal, 2015 (2015),
https://doi.org/10.1155/2015/371625 . .

TY  - JOUR
AU  - Rajaković-Ognjanović, Vladana
AU  - Jovanović, Branislava M.
AU  - Živojinović, Dragana
AU  - Rajaković, Ljubinka V.
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2699
AB  - Analysis and monitoring of arsenic is still a challenging analytical task. Due to its complex behaviour (different forms of arsenic that can be present depending on pH and oxidation states of arsenic) as well as demanding analytical procedures and instrumental tools for control of arsenic concentration in drinking water which is set to 10 mu g L-1, there are still some open questions and issues when arsenic is the scientific topic. In this paper the idea was to use a multivariate statistical approach to identify the key variables and their relation to high arsenic concentration in surface waters of Serbia. The main idea was to identify and connect the key water quality parameters with arsenic concentration and to suggest adequate treatment technologies for water purification and arsenic removal. The data set for multivariate statistical approach were water quality parameters of surface water samples from Serbia. The artificial neural network (ANN) was applied for data analysis. After applying ANN the results showed strong relation between arsenic concentration and P-tot, SO42-, COD, carbonate, N-org, DO, and SiO2 content. What could be concluded from the obtained results is that high concentration of organic matter, proportional to nutrients (nitrogen and phosphorus), silica (SiO2) and dissolved oxygen highly correlates with the dissolved arsenic which implies that the most adequate technology for the water treatment could be precipitation, which in general includes coagulation. What remains unquestioned and needs to be performed is arsenic speciation analysis.
PB  - Gheorghe Asachi Technical University of Iasi, Romania
T2  - Environmental Engineering and Management Journal
T1  - Challenging analytical task: analysis and monitoring of arsenic species in water
EP  - 2282
IS  - 9
SP  - 2275
VL  - 13
DO  - 10.30638/eemj.2014.254
ER  - 

@article{
author = "Rajaković-Ognjanović, Vladana and Jovanović, Branislava M. and Živojinović, Dragana and Rajaković, Ljubinka V.",
year = "2014",
abstract = "Analysis and monitoring of arsenic is still a challenging analytical task. Due to its complex behaviour (different forms of arsenic that can be present depending on pH and oxidation states of arsenic) as well as demanding analytical procedures and instrumental tools for control of arsenic concentration in drinking water which is set to 10 mu g L-1, there are still some open questions and issues when arsenic is the scientific topic. In this paper the idea was to use a multivariate statistical approach to identify the key variables and their relation to high arsenic concentration in surface waters of Serbia. The main idea was to identify and connect the key water quality parameters with arsenic concentration and to suggest adequate treatment technologies for water purification and arsenic removal. The data set for multivariate statistical approach were water quality parameters of surface water samples from Serbia. The artificial neural network (ANN) was applied for data analysis. After applying ANN the results showed strong relation between arsenic concentration and P-tot, SO42-, COD, carbonate, N-org, DO, and SiO2 content. What could be concluded from the obtained results is that high concentration of organic matter, proportional to nutrients (nitrogen and phosphorus), silica (SiO2) and dissolved oxygen highly correlates with the dissolved arsenic which implies that the most adequate technology for the water treatment could be precipitation, which in general includes coagulation. What remains unquestioned and needs to be performed is arsenic speciation analysis.",
publisher = "Gheorghe Asachi Technical University of Iasi, Romania",
journal = "Environmental Engineering and Management Journal",
title = "Challenging analytical task: analysis and monitoring of arsenic species in water",
pages = "2282-2275",
number = "9",
volume = "13",
doi = "10.30638/eemj.2014.254"
}

Rajaković-Ognjanović, V., Jovanović, B. M., Živojinović, D.,& Rajaković, L. V.. (2014). Challenging analytical task: analysis and monitoring of arsenic species in water. in Environmental Engineering and Management Journal
Gheorghe Asachi Technical University of Iasi, Romania., 13(9), 2275-2282.
https://doi.org/10.30638/eemj.2014.254

Rajaković-Ognjanović V, Jovanović BM, Živojinović D, Rajaković LV. Challenging analytical task: analysis and monitoring of arsenic species in water. in Environmental Engineering and Management Journal. 2014;13(9):2275-2282.
doi:10.30638/eemj.2014.254 .

Rajaković-Ognjanović, Vladana, Jovanović, Branislava M., Živojinović, Dragana, Rajaković, Ljubinka V., "Challenging analytical task: analysis and monitoring of arsenic species in water" in Environmental Engineering and Management Journal, 13, no. 9 (2014):2275-2282,
https://doi.org/10.30638/eemj.2014.254 . .

TY  - JOUR
AU  - Živojinović, Dragana
AU  - Lukić, Nataša A.
AU  - Onjia, Antonije
AU  - Rajaković, Ljubinka V.
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2337
AB  - The main goal of this work is focused on water quality classification of the Sava River (Serbia) and the evaluation of temporal/spatial variations of pollution data and the interpretation of a large complex water quality data set obtained by the monitoring of significant quality parameters measured during the several years of monitoring. Selected chemometrics techniques, such as principal component analysis (PCA), factor analysis (FA), cluster analysis (CA) and discriminant analysis (DA), were applied to the dataset obtained by monitoring more than twenty physico-chemical quality parameters for water samples. Multivariate analysis of very complex matrix demonstrated the power of chemometrics in identification of factors as groups of correlated variables with the highest percentage of explanatory variance. Natural clusters of analyzed variables with a similar pollution character were identified for the investigated period of time. Chemometrics tools appeared as very efficient for river water classification and rapid assessment of water quality necessary for management of water resources.
AB  - U uzorcima vode iz životne sredine, kao što su površinske, podzemne i otpadne vode nalazi se veliki broj elemenata i jedinjenja, koji redovno moraju biti praćeni, kako bi blagovremeno bili uklonjeni u cilju prečišćavanja vode i održavanja kvaliteta vode u propisanim granicama. Zbog toga je veoma važno na vreme utvrditi pravilnost i zakonomernost u pogledu promene raspodele sadržaja zagađujućih materija i predvideti pravac njihovog daljeg kretanja. U ovom radu pažnja je posvećena analizi sadržaja najvažnijih elemenata koji su bitni za kvalitet vode (teški metali, pojedini katjoni i anjoni, organska jedinjenja), a takođe su mereni i praćeni neki fizičko-hemijski parametri (temperatura, pH, boja, mutnoća, provodljivost). U ispitivanjima je analizirana površinska voda reke Save. Analiza i statistička obrada svih rezultata merenja urađena je primenom multivarijantnih statističkih metoda. Izabrane hemometrijske tehnike, kao što su analiza glavnih komponenata (PCA), faktorska analiza (FA), klasterska analiza (CA) i diskriminaciona analiza (DA) primenjene su na primeru sveobuhvatne analize i procene kvaliteta rečne vode, praćenjem preko 15 fizičko-hemijskih parametara bitnih za kvalitet vode, uzorkovanih u višegodišnjem periodu i u različitim sezonama. Na ovaj način izvršena je karakterizacija i klasifikacija kvaliteta savske vode i evaluacija podataka o zagađujućim materijama.
PB  - Udruženje za tehnologiju vode i sanitarno inžinjerstvo, Beograd
T2  - Voda i sanitarna tehnika
T1  - Assessment of surface water quality using multivariate statistical techniques: A case study of Sava river
T1  - Hemometrijski pristup u analizi i proceni kvaliteta sirove površinske vode - reka Sava
EP  - 30
IS  - 6
SP  - 19
VL  - 43
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2337
ER  - 

@article{
author = "Živojinović, Dragana and Lukić, Nataša A. and Onjia, Antonije and Rajaković, Ljubinka V.",
year = "2013",
abstract = "The main goal of this work is focused on water quality classification of the Sava River (Serbia) and the evaluation of temporal/spatial variations of pollution data and the interpretation of a large complex water quality data set obtained by the monitoring of significant quality parameters measured during the several years of monitoring. Selected chemometrics techniques, such as principal component analysis (PCA), factor analysis (FA), cluster analysis (CA) and discriminant analysis (DA), were applied to the dataset obtained by monitoring more than twenty physico-chemical quality parameters for water samples. Multivariate analysis of very complex matrix demonstrated the power of chemometrics in identification of factors as groups of correlated variables with the highest percentage of explanatory variance. Natural clusters of analyzed variables with a similar pollution character were identified for the investigated period of time. Chemometrics tools appeared as very efficient for river water classification and rapid assessment of water quality necessary for management of water resources., U uzorcima vode iz životne sredine, kao što su površinske, podzemne i otpadne vode nalazi se veliki broj elemenata i jedinjenja, koji redovno moraju biti praćeni, kako bi blagovremeno bili uklonjeni u cilju prečišćavanja vode i održavanja kvaliteta vode u propisanim granicama. Zbog toga je veoma važno na vreme utvrditi pravilnost i zakonomernost u pogledu promene raspodele sadržaja zagađujućih materija i predvideti pravac njihovog daljeg kretanja. U ovom radu pažnja je posvećena analizi sadržaja najvažnijih elemenata koji su bitni za kvalitet vode (teški metali, pojedini katjoni i anjoni, organska jedinjenja), a takođe su mereni i praćeni neki fizičko-hemijski parametri (temperatura, pH, boja, mutnoća, provodljivost). U ispitivanjima je analizirana površinska voda reke Save. Analiza i statistička obrada svih rezultata merenja urađena je primenom multivarijantnih statističkih metoda. Izabrane hemometrijske tehnike, kao što su analiza glavnih komponenata (PCA), faktorska analiza (FA), klasterska analiza (CA) i diskriminaciona analiza (DA) primenjene su na primeru sveobuhvatne analize i procene kvaliteta rečne vode, praćenjem preko 15 fizičko-hemijskih parametara bitnih za kvalitet vode, uzorkovanih u višegodišnjem periodu i u različitim sezonama. Na ovaj način izvršena je karakterizacija i klasifikacija kvaliteta savske vode i evaluacija podataka o zagađujućim materijama.",
publisher = "Udruženje za tehnologiju vode i sanitarno inžinjerstvo, Beograd",
journal = "Voda i sanitarna tehnika",
title = "Assessment of surface water quality using multivariate statistical techniques: A case study of Sava river, Hemometrijski pristup u analizi i proceni kvaliteta sirove površinske vode - reka Sava",
pages = "30-19",
number = "6",
volume = "43",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2337"
}

Živojinović, D., Lukić, N. A., Onjia, A.,& Rajaković, L. V.. (2013). Assessment of surface water quality using multivariate statistical techniques: A case study of Sava river. in Voda i sanitarna tehnika
Udruženje za tehnologiju vode i sanitarno inžinjerstvo, Beograd., 43(6), 19-30.
https://hdl.handle.net/21.15107/rcub_technorep_2337

Živojinović D, Lukić NA, Onjia A, Rajaković LV. Assessment of surface water quality using multivariate statistical techniques: A case study of Sava river. in Voda i sanitarna tehnika. 2013;43(6):19-30.
https://hdl.handle.net/21.15107/rcub_technorep_2337 .

Živojinović, Dragana, Lukić, Nataša A., Onjia, Antonije, Rajaković, Ljubinka V., "Assessment of surface water quality using multivariate statistical techniques: A case study of Sava river" in Voda i sanitarna tehnika, 43, no. 6 (2013):19-30,
https://hdl.handle.net/21.15107/rcub_technorep_2337 .

TY  - JOUR
AU  - Živojinović, Dragana
AU  - Rajaković-Ognjanović, Vladana
AU  - Onjia, Antonije
AU  - Rajaković, Ljubinka V.
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2425
AB  - In this study, a multivariate statistical approach was used to identify the key variables responsible for process water quality in a power plant. The ion species that could cause corrosion in one of the major thermal power plants (TPP) in Serbia were monitored. A suppressed ion chromatographic (IC) method for the determination of the target anions and cations at trace levels was applied. In addition, some metals important for corrosion, i.e., copper and iron, were also analysed by the graphite furnace atomic absorption spectrophotometric (GFAAS) method. The control parameters, i.e., pH, dissolved oxygen and silica, were measured on-line. The analysis of a series of representative samples from the TPP Nikola Tesla, collected in different plant operation modes, was performed. Every day laboratory and on-line analysis provides a large number of data in relation to the quality of water in the water-steam cycle (WSC) which should be evaluated and processed. The goal of this investigation was to apply multivariate statistical techniques and choose the most applicable technique for this case. Factor analysis (FA), especially principal component analysis (PCA) and cluster analysis (CA) were investigated. These methods were applied for the evaluation of the spatial/temporal variations of process water and for the estimation of 13 quality parameters which were monitored at 11 locations in the WSC in different working conditions during a twelve month period. It was concluded that PCA was the most useful method for identifying functional relations between the elements. After data reduction, four main factors controlling the variability were identified. Hierarchical cluster analysis (HCA) was applied for sample differentiation according to the sample location and working mode of the TPP. On the basis of this research, the new design of an optimal monitoring strategy for future analysis was proposed with a reduced number of measured parameters and with reduced frequency of their measurements.
PB  - Sciendo, Warsaw
T2  - Central European Journal of Chemistry
T1  - Spatial variations in the distribution of trace ionic impurities in the water-steam cycle in a thermal power plant based on a multivariate statistical approach
EP  - 1470
IS  - 9
SP  - 1456
VL  - 11
DO  - 10.2478/s11532-013-0286-4
ER  - 

@article{
author = "Živojinović, Dragana and Rajaković-Ognjanović, Vladana and Onjia, Antonije and Rajaković, Ljubinka V.",
year = "2013",
abstract = "In this study, a multivariate statistical approach was used to identify the key variables responsible for process water quality in a power plant. The ion species that could cause corrosion in one of the major thermal power plants (TPP) in Serbia were monitored. A suppressed ion chromatographic (IC) method for the determination of the target anions and cations at trace levels was applied. In addition, some metals important for corrosion, i.e., copper and iron, were also analysed by the graphite furnace atomic absorption spectrophotometric (GFAAS) method. The control parameters, i.e., pH, dissolved oxygen and silica, were measured on-line. The analysis of a series of representative samples from the TPP Nikola Tesla, collected in different plant operation modes, was performed. Every day laboratory and on-line analysis provides a large number of data in relation to the quality of water in the water-steam cycle (WSC) which should be evaluated and processed. The goal of this investigation was to apply multivariate statistical techniques and choose the most applicable technique for this case. Factor analysis (FA), especially principal component analysis (PCA) and cluster analysis (CA) were investigated. These methods were applied for the evaluation of the spatial/temporal variations of process water and for the estimation of 13 quality parameters which were monitored at 11 locations in the WSC in different working conditions during a twelve month period. It was concluded that PCA was the most useful method for identifying functional relations between the elements. After data reduction, four main factors controlling the variability were identified. Hierarchical cluster analysis (HCA) was applied for sample differentiation according to the sample location and working mode of the TPP. On the basis of this research, the new design of an optimal monitoring strategy for future analysis was proposed with a reduced number of measured parameters and with reduced frequency of their measurements.",
publisher = "Sciendo, Warsaw",
journal = "Central European Journal of Chemistry",
title = "Spatial variations in the distribution of trace ionic impurities in the water-steam cycle in a thermal power plant based on a multivariate statistical approach",
pages = "1470-1456",
number = "9",
volume = "11",
doi = "10.2478/s11532-013-0286-4"
}

Živojinović, D., Rajaković-Ognjanović, V., Onjia, A.,& Rajaković, L. V.. (2013). Spatial variations in the distribution of trace ionic impurities in the water-steam cycle in a thermal power plant based on a multivariate statistical approach. in Central European Journal of Chemistry
Sciendo, Warsaw., 11(9), 1456-1470.
https://doi.org/10.2478/s11532-013-0286-4

Živojinović D, Rajaković-Ognjanović V, Onjia A, Rajaković LV. Spatial variations in the distribution of trace ionic impurities in the water-steam cycle in a thermal power plant based on a multivariate statistical approach. in Central European Journal of Chemistry. 2013;11(9):1456-1470.
doi:10.2478/s11532-013-0286-4 .

Živojinović, Dragana, Rajaković-Ognjanović, Vladana, Onjia, Antonije, Rajaković, Ljubinka V., "Spatial variations in the distribution of trace ionic impurities in the water-steam cycle in a thermal power plant based on a multivariate statistical approach" in Central European Journal of Chemistry, 11, no. 9 (2013):1456-1470,
https://doi.org/10.2478/s11532-013-0286-4 . .

TY  - THES
AU  - Živojinović, Dragana
PY  - 2013
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=2257
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:10108/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=45042703
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4611
AB  - Modern society is characterized by intensive industrialization and urbanization, leding to the depletion of natural resources and increasing threat for the environment. In terms of global development, concern about water is the same as a matter of survival of civilization. Therefore, water management and water quality control are essential social needs. Teams of experts from different scientific fields are searching for the right patterns and models for modeling of water quality parameters and prediction of variables responsible for water quality in order to discover the key variables that lead to groups of similar locations and objects, temporal and spatial variations and to identify the sources of pollution and to assess the distribution of pollution. The aim of this study was to optimize the system for monitoring and protection of water resources. Laboratory and on-line analysis performed daily provide a huge number of data on the quality of water which should be evaluated, processed and reduced in order to obtain information that would be sufficient to indicate the water quality and that would serve as the basis for efficient modeling and management of water resources. The goal of this investigation was to apply multivariate statistical techniques and choose the most applicable one for this case. The statistical evaluation and multivariate analysis are very important in all fields, ranging from the economics, marketing, psychology, social studies, to medicine, pharmacy, and especially chemistry and environmental protection. Regular monitoring of parameters of the process water, with the possible reduction of the number of on-line parameters that should be monitored and their frequency of measurement is important for the maintanance services in the industry. From key variables which are measured on-line, and by which indirectly the information on other parameters are recieved, based on their correlations, simplification of the monitoring system is enabled with less consuming activities and the same level of preventing accidents. Within this Ph.D. thesis the concentration of ionic species and the cruical physicochemical parameters in the process water in the water-steam systems are monitored. A complete evaluation of the measurement was performed. The ion chromatography (IC) method for the determination of ions at trace level (ppb-ppt) was tested on real samples, and the method was optimized and validated. Different chemometric methods such as principal components analysis (PCA), factor analysis (FA), cluster analysis (CA) and discriminant analysis (DA) were applied, for the ultrapure water. The optimal combination of multivariate techniques and the selection of one or more techniques that can be applied for the reduction of data, as well as the choice of key variables and the prediction of the parameters which are the most responsible for variations in water quality and the design of future monitoring system was investigated. The locations with the highest pollution, in respect to the analysed elements, as well as their possible origin and source was defined and investigated. The relationships between the elements and mechanisms by which these impurities get into the water-steam cycle were discovered based on the correlation coefficients. The monitoring system with a reduced number of parameters and reduced frequency of measurements is proposed as a result of this research. The second object of the analysis within this study was the raw water (surface and groundwater) which the Belgrade Waterworks system used for procesing into the drinking water. In order to define the parameters that are responsible for the change of water quality and to obtain current information on the qualitative and quantitative composition of the water, the chemometrics methods can be applied to assess the quality of surface water (Sava river ) and groundwater. Based on the measured water quality parameters of the Sava river, the database (data set) that was subjected to multivariate analysis was created. The chemometric methods which give the best interpretation of the spatial/temporal variations and the most accurate prediction and modelling parameters responsible for the variations in water quality were adopted. The causes of variation in all aspects: location, seasonal and temporal were investigated. The parameters that led to all forms of variability in the water quality were revealed. The modelling based on the DA method and artificial neural network (ANN) was performed.
AB  - Savremeno društvo karakteriše intenzivna industrijalizacija i urbanizacija, što ima za posledicu sve obimnije iscrpljivanje prirodnih resursa i sve opasnije ugrožavanje životne sredine. U uslovima globalnog razvoja, briga o vodi predstavlja pitanje opstanka civilizacije. Stoga upravljanje vodama i kontrola kvaliteta voda postaju suštinska društvena potreba. Timovi stručnjaka iz različitih oblasti pokušavaju da nađu obrasce i modele za modelovanje parametara kvaliteta vode i predviđanje promenljivih odgovornih za kvalitet vode, da otkriju ključne promenljive koje dovode do grupisanja sličnih lokacija i objekata, vremensko/prostorne varijacije i identifikacije izvora zagađenja i procene raspodele zagađenja. Cilj ovih istraživanja je optimizacija sistema monitoringa i očuvanja prirodnih vodenih resursa. Svakodnevno se, hemijske laboratorije i odgovarajuće službe kontrole kvaliteta suočavaju sa ogromnim brojem merenja, koja kao rezultat imaju velike baze (setove) podataka, koje treba pravovremeno obraditi, procesuirati i redukovati s ciljem dobijanja informacija koje bi bile dovoljne da ukažu na postojeći kvalitet vode i koji bi poslužili kao osnova za efikasno modelovanje i upravljanje vodnim resursima. Statistička evaluacija i multivarijaciona analiza doživela je značaj u savremenom društvu, i to na svim poljima, počevši od hemije i zaštite životne sredine, ali i ekonomije, marketinga, psihologije, socioloških istraživanja, pa do medicine i farmacije. Redovno praćenje parametara u procesnoj vodi, smanjenje broja on-line parametara koje treba redovno pratiti i frekvencije merenja, prioritet je službi kontrole u industriji. Na osnovu prethodno definisanih ključnih promenljivih, koje se mere direktno, a preko kojih se indirektno dobijaju informacije o ostalim parametrima, zbog njihovih čvrstih korelacija, pojednostavljuje se sistem monitoringa i obezbeđuje pravovremena aktivnost u sprečavanju havarija. U okviru ove doktorske disertacije sistemski je praćena koncentracija jonskih vrsta, kao i bitnih fizičko-hemijskih parametara u procesnoj vodi iz sistema voda-para. Izvršena je kompletna evaluacija merenja. Jonska hromatografska (IC) metoda za određivanje jona na nivou tragova (ppb-ppt) testirana je na realnim uzorcima, izvršena je optimizacija i validacija metode. Na primeru ultračiste vode, ispitane su različite hemometrijske metode, kao što su analiza glavnih komponenti (PCA), faktorska analiza (FA), analiza grupisanja ili klasterska analiza (CA), diskriminaciona analiza (DA). Primenjena je kombinacija multivarijacionih tehnika i izvršen izbor one (onih) koja može najviše pomoći u redukciji podataka, izboru ključnih parametara, predviđanju parametara koji su najodgovorniji za varijacije u kvalitetu vode i projektovanju budućeg sistema monitoringa. Definisane su lokacije sa najvećim zagađenjem u odnosu na ispitivane elemente, kao i izvori mogućeg porekla. Na osnovu koeficijenta korelacije otkriveni su odnosi između elemenata, kao i mogući mehanizmi putem kojih ove zagađujuće materije dospevaju u ciklus voda-para. Predložen je sistem monitoringa sa redukovanim brojem parametara i smanjenom učestanošću merenja. Drugi objekat i predmet istraživanja u ovoj disertaciji bila je sirova voda (površinska i podzemna) iz sistema JKP Beogradski vodovod i kanalizacija. Zbog aktuelne problematike zagađenja voda, potrebi definisanja parametara koji su odgovorni za kvalitet vode i dobijanja trenutnih informacija o kvalitativnom i kvantitativnom sastavu vode, veliki broj radova objavljenih u svetu se fokusira na razvijanje modela i primenu hemometrijskih metoda u proceni kvaliteta površinskih (reke, jezera, mora) i podzemnih voda. Na osnovu merenja parametra, formirane su baze podataka, tzv. data setovi koji su podvrgnuti multivarijacionoj analizi. Predložene su hemometrijske metode koje daju najbolje tumačenje prostorno/vremenskih varijacija i najtačnije predviđanje i modelovanje parametara koji su odgovorni za ispoljene varijacije u kvalitetu vode. Ispitani su uzroci varijacija sa svih aspekata: lokacijski, sezonski i godišnji. Otkriveni su parametri koji su doveli do svih ovih oblika varijabilnosti parametara kvaliteta vode. Izvršeno je i modelovanje pomoću metoda DA i veštačkih neuronskih mreža (ANN).
PB  - Univerzitet u Beogradu, Tehnološko-metalurški fakultet
T1  - The development and application of chemometric methods for the classification and assessment of water quality
T1  - Razvoj i primena hemometrijskih metoda za klasifikaciju i procenu kvaliteta vode
UR  - https://hdl.handle.net/21.15107/rcub_technorep_4611
ER  - 

@phdthesis{
author = "Živojinović, Dragana",
year = "2013",
abstract = "Modern society is characterized by intensive industrialization and urbanization, leding to the depletion of natural resources and increasing threat for the environment. In terms of global development, concern about water is the same as a matter of survival of civilization. Therefore, water management and water quality control are essential social needs. Teams of experts from different scientific fields are searching for the right patterns and models for modeling of water quality parameters and prediction of variables responsible for water quality in order to discover the key variables that lead to groups of similar locations and objects, temporal and spatial variations and to identify the sources of pollution and to assess the distribution of pollution. The aim of this study was to optimize the system for monitoring and protection of water resources. Laboratory and on-line analysis performed daily provide a huge number of data on the quality of water which should be evaluated, processed and reduced in order to obtain information that would be sufficient to indicate the water quality and that would serve as the basis for efficient modeling and management of water resources. The goal of this investigation was to apply multivariate statistical techniques and choose the most applicable one for this case. The statistical evaluation and multivariate analysis are very important in all fields, ranging from the economics, marketing, psychology, social studies, to medicine, pharmacy, and especially chemistry and environmental protection. Regular monitoring of parameters of the process water, with the possible reduction of the number of on-line parameters that should be monitored and their frequency of measurement is important for the maintanance services in the industry. From key variables which are measured on-line, and by which indirectly the information on other parameters are recieved, based on their correlations, simplification of the monitoring system is enabled with less consuming activities and the same level of preventing accidents. Within this Ph.D. thesis the concentration of ionic species and the cruical physicochemical parameters in the process water in the water-steam systems are monitored. A complete evaluation of the measurement was performed. The ion chromatography (IC) method for the determination of ions at trace level (ppb-ppt) was tested on real samples, and the method was optimized and validated. Different chemometric methods such as principal components analysis (PCA), factor analysis (FA), cluster analysis (CA) and discriminant analysis (DA) were applied, for the ultrapure water. The optimal combination of multivariate techniques and the selection of one or more techniques that can be applied for the reduction of data, as well as the choice of key variables and the prediction of the parameters which are the most responsible for variations in water quality and the design of future monitoring system was investigated. The locations with the highest pollution, in respect to the analysed elements, as well as their possible origin and source was defined and investigated. The relationships between the elements and mechanisms by which these impurities get into the water-steam cycle were discovered based on the correlation coefficients. The monitoring system with a reduced number of parameters and reduced frequency of measurements is proposed as a result of this research. The second object of the analysis within this study was the raw water (surface and groundwater) which the Belgrade Waterworks system used for procesing into the drinking water. In order to define the parameters that are responsible for the change of water quality and to obtain current information on the qualitative and quantitative composition of the water, the chemometrics methods can be applied to assess the quality of surface water (Sava river ) and groundwater. Based on the measured water quality parameters of the Sava river, the database (data set) that was subjected to multivariate analysis was created. The chemometric methods which give the best interpretation of the spatial/temporal variations and the most accurate prediction and modelling parameters responsible for the variations in water quality were adopted. The causes of variation in all aspects: location, seasonal and temporal were investigated. The parameters that led to all forms of variability in the water quality were revealed. The modelling based on the DA method and artificial neural network (ANN) was performed., Savremeno društvo karakteriše intenzivna industrijalizacija i urbanizacija, što ima za posledicu sve obimnije iscrpljivanje prirodnih resursa i sve opasnije ugrožavanje životne sredine. U uslovima globalnog razvoja, briga o vodi predstavlja pitanje opstanka civilizacije. Stoga upravljanje vodama i kontrola kvaliteta voda postaju suštinska društvena potreba. Timovi stručnjaka iz različitih oblasti pokušavaju da nađu obrasce i modele za modelovanje parametara kvaliteta vode i predviđanje promenljivih odgovornih za kvalitet vode, da otkriju ključne promenljive koje dovode do grupisanja sličnih lokacija i objekata, vremensko/prostorne varijacije i identifikacije izvora zagađenja i procene raspodele zagađenja. Cilj ovih istraživanja je optimizacija sistema monitoringa i očuvanja prirodnih vodenih resursa. Svakodnevno se, hemijske laboratorije i odgovarajuće službe kontrole kvaliteta suočavaju sa ogromnim brojem merenja, koja kao rezultat imaju velike baze (setove) podataka, koje treba pravovremeno obraditi, procesuirati i redukovati s ciljem dobijanja informacija koje bi bile dovoljne da ukažu na postojeći kvalitet vode i koji bi poslužili kao osnova za efikasno modelovanje i upravljanje vodnim resursima. Statistička evaluacija i multivarijaciona analiza doživela je značaj u savremenom društvu, i to na svim poljima, počevši od hemije i zaštite životne sredine, ali i ekonomije, marketinga, psihologije, socioloških istraživanja, pa do medicine i farmacije. Redovno praćenje parametara u procesnoj vodi, smanjenje broja on-line parametara koje treba redovno pratiti i frekvencije merenja, prioritet je službi kontrole u industriji. Na osnovu prethodno definisanih ključnih promenljivih, koje se mere direktno, a preko kojih se indirektno dobijaju informacije o ostalim parametrima, zbog njihovih čvrstih korelacija, pojednostavljuje se sistem monitoringa i obezbeđuje pravovremena aktivnost u sprečavanju havarija. U okviru ove doktorske disertacije sistemski je praćena koncentracija jonskih vrsta, kao i bitnih fizičko-hemijskih parametara u procesnoj vodi iz sistema voda-para. Izvršena je kompletna evaluacija merenja. Jonska hromatografska (IC) metoda za određivanje jona na nivou tragova (ppb-ppt) testirana je na realnim uzorcima, izvršena je optimizacija i validacija metode. Na primeru ultračiste vode, ispitane su različite hemometrijske metode, kao što su analiza glavnih komponenti (PCA), faktorska analiza (FA), analiza grupisanja ili klasterska analiza (CA), diskriminaciona analiza (DA). Primenjena je kombinacija multivarijacionih tehnika i izvršen izbor one (onih) koja može najviše pomoći u redukciji podataka, izboru ključnih parametara, predviđanju parametara koji su najodgovorniji za varijacije u kvalitetu vode i projektovanju budućeg sistema monitoringa. Definisane su lokacije sa najvećim zagađenjem u odnosu na ispitivane elemente, kao i izvori mogućeg porekla. Na osnovu koeficijenta korelacije otkriveni su odnosi između elemenata, kao i mogući mehanizmi putem kojih ove zagađujuće materije dospevaju u ciklus voda-para. Predložen je sistem monitoringa sa redukovanim brojem parametara i smanjenom učestanošću merenja. Drugi objekat i predmet istraživanja u ovoj disertaciji bila je sirova voda (površinska i podzemna) iz sistema JKP Beogradski vodovod i kanalizacija. Zbog aktuelne problematike zagađenja voda, potrebi definisanja parametara koji su odgovorni za kvalitet vode i dobijanja trenutnih informacija o kvalitativnom i kvantitativnom sastavu vode, veliki broj radova objavljenih u svetu se fokusira na razvijanje modela i primenu hemometrijskih metoda u proceni kvaliteta površinskih (reke, jezera, mora) i podzemnih voda. Na osnovu merenja parametra, formirane su baze podataka, tzv. data setovi koji su podvrgnuti multivarijacionoj analizi. Predložene su hemometrijske metode koje daju najbolje tumačenje prostorno/vremenskih varijacija i najtačnije predviđanje i modelovanje parametara koji su odgovorni za ispoljene varijacije u kvalitetu vode. Ispitani su uzroci varijacija sa svih aspekata: lokacijski, sezonski i godišnji. Otkriveni su parametri koji su doveli do svih ovih oblika varijabilnosti parametara kvaliteta vode. Izvršeno je i modelovanje pomoću metoda DA i veštačkih neuronskih mreža (ANN).",
publisher = "Univerzitet u Beogradu, Tehnološko-metalurški fakultet",
title = "The development and application of chemometric methods for the classification and assessment of water quality, Razvoj i primena hemometrijskih metoda za klasifikaciju i procenu kvaliteta vode",
url = "https://hdl.handle.net/21.15107/rcub_technorep_4611"
}

Živojinović, D.. (2013). The development and application of chemometric methods for the classification and assessment of water quality. 
Univerzitet u Beogradu, Tehnološko-metalurški fakultet..
https://hdl.handle.net/21.15107/rcub_technorep_4611

Živojinović D. The development and application of chemometric methods for the classification and assessment of water quality. 2013;.
https://hdl.handle.net/21.15107/rcub_technorep_4611 .

Živojinović, Dragana, "The development and application of chemometric methods for the classification and assessment of water quality" (2013),
https://hdl.handle.net/21.15107/rcub_technorep_4611 .