TY  - CONF
AU  - Lukić, Jelena
AU  - Đuraš, Zorana
AU  - Đurkić, Tatjana
AU  - Onjia, Antonije
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7415
AB  - Isoamyl 4-methoxycinnamate (IAMC) is an organic compound belonging to UV filters, part of
many cosmetic products that aim to protect human skin and hair from harmful solar radiation.
Numerous studies conducted in recent decades have confirmed the presence of IAMC in the
environmental waters and its toxicity to aquatic species. Low concentrations of this compound
in environmental samples require sample preparation that achieves a high enrichment factor.
Solid-phase extraction (SPE) achieves a high efficiency of extraction of organic compounds
and higher enrichment factor compared to liquid-liquid extractions. In this paper, sample
preparation involves the SPE of IAMC using Oasis HLB cartridges. Several experimental
variables, such as pH value and volume of sample, eluent type, eluent volume, and salt content
were considered during the optimization process. The eluted compound was analyzed using
liquid chromatography-tandem mass spectrometry (LC-MS/MS). Based on the recovery data,
the optimal parameters of the SPE method were obtained: extraction from 50 mL of the aqueous
sample without added salt, initial pH of the sample set to 8, and dichloromethane/methanol
mixture used as an organic solvent for elution. The optimized SPE procedure is suitable for the
analysis of IAMC in water. The recovery was 98%, and the enrichment factor was 150.
PB  - Pardubice, Czech Republic : University of Pardubice
C3  - Book of abstracts / Chem2Change - Environmental Chemistry towards Global Change, 2nd Online ACE Seminar on Chemistry and the Environment Led by Early-Career Scientists, 15-16 March 2022
T1  - OPTIMIZATION OF SOLID-PHASE EXTRACTION FOR DETERMINATION OF ISOAMYL 4-METHOXYCINNAMATE IN WATER
SP  - 32
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7415
ER  - 

@conference{
author = "Lukić, Jelena and Đuraš, Zorana and Đurkić, Tatjana and Onjia, Antonije",
year = "2022",
abstract = "Isoamyl 4-methoxycinnamate (IAMC) is an organic compound belonging to UV filters, part of
many cosmetic products that aim to protect human skin and hair from harmful solar radiation.
Numerous studies conducted in recent decades have confirmed the presence of IAMC in the
environmental waters and its toxicity to aquatic species. Low concentrations of this compound
in environmental samples require sample preparation that achieves a high enrichment factor.
Solid-phase extraction (SPE) achieves a high efficiency of extraction of organic compounds
and higher enrichment factor compared to liquid-liquid extractions. In this paper, sample
preparation involves the SPE of IAMC using Oasis HLB cartridges. Several experimental
variables, such as pH value and volume of sample, eluent type, eluent volume, and salt content
were considered during the optimization process. The eluted compound was analyzed using
liquid chromatography-tandem mass spectrometry (LC-MS/MS). Based on the recovery data,
the optimal parameters of the SPE method were obtained: extraction from 50 mL of the aqueous
sample without added salt, initial pH of the sample set to 8, and dichloromethane/methanol
mixture used as an organic solvent for elution. The optimized SPE procedure is suitable for the
analysis of IAMC in water. The recovery was 98%, and the enrichment factor was 150.",
publisher = "Pardubice, Czech Republic : University of Pardubice",
journal = "Book of abstracts / Chem2Change - Environmental Chemistry towards Global Change, 2nd Online ACE Seminar on Chemistry and the Environment Led by Early-Career Scientists, 15-16 March 2022",
title = "OPTIMIZATION OF SOLID-PHASE EXTRACTION FOR DETERMINATION OF ISOAMYL 4-METHOXYCINNAMATE IN WATER",
pages = "32",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7415"
}

Lukić, J., Đuraš, Z., Đurkić, T.,& Onjia, A.. (2022). OPTIMIZATION OF SOLID-PHASE EXTRACTION FOR DETERMINATION OF ISOAMYL 4-METHOXYCINNAMATE IN WATER. in Book of abstracts / Chem2Change - Environmental Chemistry towards Global Change, 2nd Online ACE Seminar on Chemistry and the Environment Led by Early-Career Scientists, 15-16 March 2022
Pardubice, Czech Republic : University of Pardubice., 32.
https://hdl.handle.net/21.15107/rcub_technorep_7415

Lukić J, Đuraš Z, Đurkić T, Onjia A. OPTIMIZATION OF SOLID-PHASE EXTRACTION FOR DETERMINATION OF ISOAMYL 4-METHOXYCINNAMATE IN WATER. in Book of abstracts / Chem2Change - Environmental Chemistry towards Global Change, 2nd Online ACE Seminar on Chemistry and the Environment Led by Early-Career Scientists, 15-16 March 2022. 2022;:32.
https://hdl.handle.net/21.15107/rcub_technorep_7415 .

Lukić, Jelena, Đuraš, Zorana, Đurkić, Tatjana, Onjia, Antonije, "OPTIMIZATION OF SOLID-PHASE EXTRACTION FOR DETERMINATION OF ISOAMYL 4-METHOXYCINNAMATE IN WATER" in Book of abstracts / Chem2Change - Environmental Chemistry towards Global Change, 2nd Online ACE Seminar on Chemistry and the Environment Led by Early-Career Scientists, 15-16 March 2022 (2022):32,
https://hdl.handle.net/21.15107/rcub_technorep_7415 .

TY  - CHAP
AU  - Matić Bujagić, Ivana
AU  - Gvozdić, Eleonora
AU  - Đurkić, Tatjana
AU  - Grujić, Svetlana
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5949
AB  - This is the first study of a broad range of chemical classes of emerging contaminants conducted by analyzing influent and effluent samples from the wastewater treatment plant of the city Topola, in Serbia. The list of compounds is extensive and this paper provides a better understanding of the environmental burden from different classes of emerging contaminants. The samples were prepared using an optimized solid-phase extraction method and analyzed by liquid chromatography-tandem mass spectrometry. Removal patterns of selected compounds are discussed based on their physico-chemical properties and detected concentrations. Significant removal efficiencies, exceeding 70%, were found for the majority of investigated pharmaceuticals, pesticides, steroids, and sweeteners. Ecotoxicological risk assessment was performed by using two complementary methods: (1) an individual substance approach, based on the calculation of risk quotients (RQs) for each substance as the ratio of Predicted Environmental Concentration (PEC) and Predicted No Effect Concentration (PNEC), and (2) mixture risk assessment (“the cocktail effect”) based on the summation of individual RQs. The classical approach (ERA method with individual substances) identified amlodipine as the riskiest substance in WWTP effluent. The mixture ERA approach revealed new risks, which were not recog-nized by the classical ERA method, indicating that individually “safe” emerging compounds can contribute to a significant risk of the whole effluents.
PB  - Springer, Cham
T2  - CNNTech 2021. Lecture Notes in Networks and Systems
T1  - Occurrence and Ecotoxicological Risk Assessment of Emerging Contaminants in Urban Wastewater Treatment Plant
VL  - 23
DO  - 10.1007/978-3-030-86009-7_8
ER  - 

@inbook{
author = "Matić Bujagić, Ivana and Gvozdić, Eleonora and Đurkić, Tatjana and Grujić, Svetlana",
year = "2022",
abstract = "This is the first study of a broad range of chemical classes of emerging contaminants conducted by analyzing influent and effluent samples from the wastewater treatment plant of the city Topola, in Serbia. The list of compounds is extensive and this paper provides a better understanding of the environmental burden from different classes of emerging contaminants. The samples were prepared using an optimized solid-phase extraction method and analyzed by liquid chromatography-tandem mass spectrometry. Removal patterns of selected compounds are discussed based on their physico-chemical properties and detected concentrations. Significant removal efficiencies, exceeding 70%, were found for the majority of investigated pharmaceuticals, pesticides, steroids, and sweeteners. Ecotoxicological risk assessment was performed by using two complementary methods: (1) an individual substance approach, based on the calculation of risk quotients (RQs) for each substance as the ratio of Predicted Environmental Concentration (PEC) and Predicted No Effect Concentration (PNEC), and (2) mixture risk assessment (“the cocktail effect”) based on the summation of individual RQs. The classical approach (ERA method with individual substances) identified amlodipine as the riskiest substance in WWTP effluent. The mixture ERA approach revealed new risks, which were not recog-nized by the classical ERA method, indicating that individually “safe” emerging compounds can contribute to a significant risk of the whole effluents.",
publisher = "Springer, Cham",
journal = "CNNTech 2021. Lecture Notes in Networks and Systems",
booktitle = "Occurrence and Ecotoxicological Risk Assessment of Emerging Contaminants in Urban Wastewater Treatment Plant",
volume = "23",
doi = "10.1007/978-3-030-86009-7_8"
}

Matić Bujagić, I., Gvozdić, E., Đurkić, T.,& Grujić, S.. (2022). Occurrence and Ecotoxicological Risk Assessment of Emerging Contaminants in Urban Wastewater Treatment Plant. in CNNTech 2021. Lecture Notes in Networks and Systems
Springer, Cham., 23.
https://doi.org/10.1007/978-3-030-86009-7_8

Matić Bujagić I, Gvozdić E, Đurkić T, Grujić S. Occurrence and Ecotoxicological Risk Assessment of Emerging Contaminants in Urban Wastewater Treatment Plant. in CNNTech 2021. Lecture Notes in Networks and Systems. 2022;23.
doi:10.1007/978-3-030-86009-7_8 .

Matić Bujagić, Ivana, Gvozdić, Eleonora, Đurkić, Tatjana, Grujić, Svetlana, "Occurrence and Ecotoxicological Risk Assessment of Emerging Contaminants in Urban Wastewater Treatment Plant" in CNNTech 2021. Lecture Notes in Networks and Systems, 23 (2022),
https://doi.org/10.1007/978-3-030-86009-7_8 . .

TY  - CONF
AU  - Gvozdić, Eleonora Ž.
AU  - Matić Bujagić, Ivana V.
AU  - Đurkić, Tatjana M.
AU  - Grujić, Svetlana D.
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5934
AB  - Veštački zaslađivači saharin i sukraloza predstavljaju emergentne zagađujuće materije čije prisustvo u akvatičnim ekosistemima može negativno uticati na osetljive organizme. Veoma su postojani u životnoj sredini, a posebno je zabrinjavajuće njihovo toksično dejstvo na planktonske vrste. U ovom radu je izvršena HPLC–MS/MS analiza tragova saharina i sukraloze u pet uzoraka rečne vode iz Save i Dunava na teritoriji Beograda radi procene prisustva i određivanja ekotoksikološkog rizika. Rezultati su pokazali da detektovane koncentracije ovih zaslađivača u reci Dunav (do 396 ng L–1 za saharin i do 349 ng L–1 za sukralozu) pokazuju nizak ekotoksikološki rizik za vodene organizme, ali zbog “koktel efekta” njihov kumulativni doprinos može predstavljati veći rizik po vodeni svet.
PB  - Beograd : Srpsko hemijsko društvo
C3  - Kratki izvodi radova ; Knjiga radova / 58. savetovanje Srpskog hemijskog društva, Beograd, 9. i 10. jun 2022. godine
T1  - Procena ekotoksikološkog rizika veštačkih zaslađivača saharina i sukraloze u rečnoj vodi na teritoriji Beograda
EP  - 188
SP  - 186
UR  - https://hdl.handle.net/21.15107/rcub_technorep_5934
ER  - 

@conference{
author = "Gvozdić, Eleonora Ž. and Matić Bujagić, Ivana V. and Đurkić, Tatjana M. and Grujić, Svetlana D.",
year = "2022",
abstract = "Veštački zaslađivači saharin i sukraloza predstavljaju emergentne zagađujuće materije čije prisustvo u akvatičnim ekosistemima može negativno uticati na osetljive organizme. Veoma su postojani u životnoj sredini, a posebno je zabrinjavajuće njihovo toksično dejstvo na planktonske vrste. U ovom radu je izvršena HPLC–MS/MS analiza tragova saharina i sukraloze u pet uzoraka rečne vode iz Save i Dunava na teritoriji Beograda radi procene prisustva i određivanja ekotoksikološkog rizika. Rezultati su pokazali da detektovane koncentracije ovih zaslađivača u reci Dunav (do 396 ng L–1 za saharin i do 349 ng L–1 za sukralozu) pokazuju nizak ekotoksikološki rizik za vodene organizme, ali zbog “koktel efekta” njihov kumulativni doprinos može predstavljati veći rizik po vodeni svet.",
publisher = "Beograd : Srpsko hemijsko društvo",
journal = "Kratki izvodi radova ; Knjiga radova / 58. savetovanje Srpskog hemijskog društva, Beograd, 9. i 10. jun 2022. godine",
title = "Procena ekotoksikološkog rizika veštačkih zaslađivača saharina i sukraloze u rečnoj vodi na teritoriji Beograda",
pages = "188-186",
url = "https://hdl.handle.net/21.15107/rcub_technorep_5934"
}

Gvozdić, E. Ž., Matić Bujagić, I. V., Đurkić, T. M.,& Grujić, S. D.. (2022). Procena ekotoksikološkog rizika veštačkih zaslađivača saharina i sukraloze u rečnoj vodi na teritoriji Beograda. in Kratki izvodi radova ; Knjiga radova / 58. savetovanje Srpskog hemijskog društva, Beograd, 9. i 10. jun 2022. godine
Beograd : Srpsko hemijsko društvo., 186-188.
https://hdl.handle.net/21.15107/rcub_technorep_5934

Gvozdić EŽ, Matić Bujagić IV, Đurkić TM, Grujić SD. Procena ekotoksikološkog rizika veštačkih zaslađivača saharina i sukraloze u rečnoj vodi na teritoriji Beograda. in Kratki izvodi radova ; Knjiga radova / 58. savetovanje Srpskog hemijskog društva, Beograd, 9. i 10. jun 2022. godine. 2022;:186-188.
https://hdl.handle.net/21.15107/rcub_technorep_5934 .

Gvozdić, Eleonora Ž., Matić Bujagić, Ivana V., Đurkić, Tatjana M., Grujić, Svetlana D., "Procena ekotoksikološkog rizika veštačkih zaslađivača saharina i sukraloze u rečnoj vodi na teritoriji Beograda" in Kratki izvodi radova ; Knjiga radova / 58. savetovanje Srpskog hemijskog društva, Beograd, 9. i 10. jun 2022. godine (2022):186-188,
https://hdl.handle.net/21.15107/rcub_technorep_5934 .

TY  - CONF
AU  - Stanišić, Tijana
AU  - Popović, Ana
AU  - Rusmirović, Jelena
AU  - Đolić, Maja
AU  - Ristić, Mirjana
AU  - Perić-Grujić, Aleksandra
AU  - Marinković, Aleksandar
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6322
AB  - Sustainable development and the circular economy are becoming the new imperative of industrial growth, as the world faces the depletion of natural resources and consequences of climate change. The utilization of waste streams through the concept of ‘new added value’ gives life to the production of materials and their environmental application. Therefore, the development of novel, eco-friendly, nature-based adsorbents that possess high degradable and recyclable potential is on the forefront of research. The modifications of wood derivates, such as cellulose and lignin, are widely applied as natural polymers due to their economic feasibility, ecological similarity and adsorption capabilities.

The subject of this study is the adsorption of nickel(II) and cadmium(II) ions from aqueous solutions using 5.0 mass % of alginate lignin microspheres (A-LMS). Due to their toxicity, persistence, high solubility and mobility, such heavy metals are widely dispersed throughout environmental media (chiefly, aquatic bodies), leading to ecological and public health problems. The raw lignin used as a source material in the study originates from the waste stream of the lumber industry. The porous microspheres are of a radius of 50 to 950 microns and a surface area of 36.9 m2 g-1 were synthesized via inverse suspension copolymerization of the kraft lignin with a poly(ethylene imine) grafting-agent and an epichlorohydrin cross-linker. The structural and surface characteristics were confirmed via Fourier transform-infrared (FTIR) spectroscopy, x-ray diffraction (XRD) and scanning electron microscopy (SEM). The textural properties of the synthesized A-LMS were determined according to the Brunauer, Emmett and Teller (BET) method of analyzing nitrogen adsorption. The adsorption batch and column testing were carried out by varying the reaction time, temperature, adsorbent mass, at predefined pH values of the initial solutions. The maximum adsorption capacity of the A-LMS for nickel (II) ions was 89.286 mg g-1 at a temperature of 318 K, while for the adsorption of cadmium(II) ions it was 96.154 mg g-1 at a temperature of 308 K. The kinetic data followed the pseudo-second-order kinetic model, while the Weber-Morris model indicated intra-particle diffusion as a rate limiting step. The thermodynamic parameters for the A-LMS further confirm that the adsorption process was spontaneous and endothermic.

The study indicates the high potential of by-products or waste products from heavy industry to be repurposed for environmental engineering applications by which they may serve a benefit as opposed to being a detrimental risk. Such is the case here with lignin-natural polymers taken from the lumber industry, which themselves may be reutilized for the removal of heavy metals from wastewater.
C3  - EGU General Assembly
T1  - Lignin microspheres as a nature-based material for effective nickel(II) and cadmium(II) ions removal
DO  - 10.5194/egusphere-egu2020-493
ER  - 

@conference{
author = "Stanišić, Tijana and Popović, Ana and Rusmirović, Jelena and Đolić, Maja and Ristić, Mirjana and Perić-Grujić, Aleksandra and Marinković, Aleksandar",
year = "2020",
abstract = "Sustainable development and the circular economy are becoming the new imperative of industrial growth, as the world faces the depletion of natural resources and consequences of climate change. The utilization of waste streams through the concept of ‘new added value’ gives life to the production of materials and their environmental application. Therefore, the development of novel, eco-friendly, nature-based adsorbents that possess high degradable and recyclable potential is on the forefront of research. The modifications of wood derivates, such as cellulose and lignin, are widely applied as natural polymers due to their economic feasibility, ecological similarity and adsorption capabilities.

The subject of this study is the adsorption of nickel(II) and cadmium(II) ions from aqueous solutions using 5.0 mass % of alginate lignin microspheres (A-LMS). Due to their toxicity, persistence, high solubility and mobility, such heavy metals are widely dispersed throughout environmental media (chiefly, aquatic bodies), leading to ecological and public health problems. The raw lignin used as a source material in the study originates from the waste stream of the lumber industry. The porous microspheres are of a radius of 50 to 950 microns and a surface area of 36.9 m2 g-1 were synthesized via inverse suspension copolymerization of the kraft lignin with a poly(ethylene imine) grafting-agent and an epichlorohydrin cross-linker. The structural and surface characteristics were confirmed via Fourier transform-infrared (FTIR) spectroscopy, x-ray diffraction (XRD) and scanning electron microscopy (SEM). The textural properties of the synthesized A-LMS were determined according to the Brunauer, Emmett and Teller (BET) method of analyzing nitrogen adsorption. The adsorption batch and column testing were carried out by varying the reaction time, temperature, adsorbent mass, at predefined pH values of the initial solutions. The maximum adsorption capacity of the A-LMS for nickel (II) ions was 89.286 mg g-1 at a temperature of 318 K, while for the adsorption of cadmium(II) ions it was 96.154 mg g-1 at a temperature of 308 K. The kinetic data followed the pseudo-second-order kinetic model, while the Weber-Morris model indicated intra-particle diffusion as a rate limiting step. The thermodynamic parameters for the A-LMS further confirm that the adsorption process was spontaneous and endothermic.

The study indicates the high potential of by-products or waste products from heavy industry to be repurposed for environmental engineering applications by which they may serve a benefit as opposed to being a detrimental risk. Such is the case here with lignin-natural polymers taken from the lumber industry, which themselves may be reutilized for the removal of heavy metals from wastewater.",
journal = "EGU General Assembly",
title = "Lignin microspheres as a nature-based material for effective nickel(II) and cadmium(II) ions removal",
doi = "10.5194/egusphere-egu2020-493"
}

Stanišić, T., Popović, A., Rusmirović, J., Đolić, M., Ristić, M., Perić-Grujić, A.,& Marinković, A.. (2020). Lignin microspheres as a nature-based material for effective nickel(II) and cadmium(II) ions removal. in EGU General Assembly.
https://doi.org/10.5194/egusphere-egu2020-493

Stanišić T, Popović A, Rusmirović J, Đolić M, Ristić M, Perić-Grujić A, Marinković A. Lignin microspheres as a nature-based material for effective nickel(II) and cadmium(II) ions removal. in EGU General Assembly. 2020;.
doi:10.5194/egusphere-egu2020-493 .

Stanišić, Tijana, Popović, Ana, Rusmirović, Jelena, Đolić, Maja, Ristić, Mirjana, Perić-Grujić, Aleksandra, Marinković, Aleksandar, "Lignin microspheres as a nature-based material for effective nickel(II) and cadmium(II) ions removal" in EGU General Assembly (2020),
https://doi.org/10.5194/egusphere-egu2020-493 . .

TY  - CONF
AU  - Matić Bujagić, Ivana
AU  - Maletić, Marina
AU  - Kalijadis, Ana
AU  - Vukčević, Marija
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6302
AB  - Nowadays, various types of inexpensive, sustainable and renewable lignocellulosic waste materials are
increasingly being utilized as precursors for carbon adsorbents production. The usage of the lignocellulosic
wastes for production of carbon materials is very attractive from the point of decreasing waste disposal costs
and improving environment protection through the waste recycling and producing useful products. In this work,
carbon adsorbents were obtained starting from beech sawdust (a waste from the wood industry), and using
hydrothermal carbonization, followed by activation in the presence of KOH as an activating agent. By varying
the activation parameters, activated hydrothermal carbon (AcHTC) samples with different characteristics were
obtained. The specific surface area of AcHTC samples was examined by N2 adsorption, while the nature and
thermal stability of the surface oxygen groups was investigated by Fourier transform infrared spectroscopy and
temperature programmed desorption method. The possibility of using AcHTC samples as adsorbents was
tested using water solution of eleven sterols belonging to the different classes (human/animal and plant
sterols). These sterols, usually present at a very high concentrations in wastewater influent and effluent
samples, can cause numerous endocrine disorders and therefore should be removed from the aquatic
environment. Obtained results showed that activated carbons based on hydrothermally treated sawdust were
highly efficient adsorbents, completely removing all tested sterols from water.
PB  - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3  - Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies ‐ CNN TECH 2020, 29 June ‐ 02 July 2020, Zlatibor, Serbia
T1  - Sawdust based hydtrothermal carbon as adsorbent for removal of sterols from water
SP  - 75
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6302
ER  - 

@conference{
author = "Matić Bujagić, Ivana and Maletić, Marina and Kalijadis, Ana and Vukčević, Marija",
year = "2020",
abstract = "Nowadays, various types of inexpensive, sustainable and renewable lignocellulosic waste materials are
increasingly being utilized as precursors for carbon adsorbents production. The usage of the lignocellulosic
wastes for production of carbon materials is very attractive from the point of decreasing waste disposal costs
and improving environment protection through the waste recycling and producing useful products. In this work,
carbon adsorbents were obtained starting from beech sawdust (a waste from the wood industry), and using
hydrothermal carbonization, followed by activation in the presence of KOH as an activating agent. By varying
the activation parameters, activated hydrothermal carbon (AcHTC) samples with different characteristics were
obtained. The specific surface area of AcHTC samples was examined by N2 adsorption, while the nature and
thermal stability of the surface oxygen groups was investigated by Fourier transform infrared spectroscopy and
temperature programmed desorption method. The possibility of using AcHTC samples as adsorbents was
tested using water solution of eleven sterols belonging to the different classes (human/animal and plant
sterols). These sterols, usually present at a very high concentrations in wastewater influent and effluent
samples, can cause numerous endocrine disorders and therefore should be removed from the aquatic
environment. Obtained results showed that activated carbons based on hydrothermally treated sawdust were
highly efficient adsorbents, completely removing all tested sterols from water.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies ‐ CNN TECH 2020, 29 June ‐ 02 July 2020, Zlatibor, Serbia",
title = "Sawdust based hydtrothermal carbon as adsorbent for removal of sterols from water",
pages = "75",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6302"
}

Matić Bujagić, I., Maletić, M., Kalijadis, A.,& Vukčević, M.. (2020). Sawdust based hydtrothermal carbon as adsorbent for removal of sterols from water. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies ‐ CNN TECH 2020, 29 June ‐ 02 July 2020, Zlatibor, Serbia
Belgrade : Innovation Center of Faculty of Mechanical Engineering., 75.
https://hdl.handle.net/21.15107/rcub_technorep_6302

Matić Bujagić I, Maletić M, Kalijadis A, Vukčević M. Sawdust based hydtrothermal carbon as adsorbent for removal of sterols from water. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies ‐ CNN TECH 2020, 29 June ‐ 02 July 2020, Zlatibor, Serbia. 2020;:75.
https://hdl.handle.net/21.15107/rcub_technorep_6302 .

Matić Bujagić, Ivana, Maletić, Marina, Kalijadis, Ana, Vukčević, Marija, "Sawdust based hydtrothermal carbon as adsorbent for removal of sterols from water" in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies ‐ CNN TECH 2020, 29 June ‐ 02 July 2020, Zlatibor, Serbia (2020):75,
https://hdl.handle.net/21.15107/rcub_technorep_6302 .

TY  - JOUR
AU  - Antanasijević, Davor
AU  - Pocajt, Viktor
AU  - Perić-Grujić, Aleksandra
AU  - Ristić, Mirjana
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4574
AB  - In this study, a self-organizing network-based monitoring location similarity index (LSI) was coupled with Ward neural networks (WNNs) with the aim to create a more accurate, but less complex, multiple sites model for the prediction of dissolved oxygen (DO) content. This multilevel splitting approach comprises the LSI-based grouping of monitoring locations according to their similarity, and virtual splitting of processed data based on their features using WNN. The values of 18 water quality parameters monitored for 12 years at 17 sites on the Danube River flow thought Serbia were used. The optimal input combinations were selected using partial mutual information algorithm with termination based on the Akaike information criterion. LSI-based splitting has yielded two groups of monitoring sites that were modeled with separate WNN models. The number and types of selected inputs differed between those two groups of sites, which was in agreement with possible pollution sources. Multiple performance metrics have revealed that the WNN models perform similar or better than multisite DO prediction models published in the literature, while using two to four times less inputs and data patterns.
PB  - Springer London Ltd, London
T2  - Neural Computing & Applications
T1  - Multilevel split of high-dimensional water quality data using artificial neural networks for the prediction of dissolved oxygen in the Danube River
EP  - 3966
IS  - 8
SP  - 3957
VL  - 32
DO  - 10.1007/s00521-019-04079-y
ER  - 

@article{
author = "Antanasijević, Davor and Pocajt, Viktor and Perić-Grujić, Aleksandra and Ristić, Mirjana",
year = "2020",
abstract = "In this study, a self-organizing network-based monitoring location similarity index (LSI) was coupled with Ward neural networks (WNNs) with the aim to create a more accurate, but less complex, multiple sites model for the prediction of dissolved oxygen (DO) content. This multilevel splitting approach comprises the LSI-based grouping of monitoring locations according to their similarity, and virtual splitting of processed data based on their features using WNN. The values of 18 water quality parameters monitored for 12 years at 17 sites on the Danube River flow thought Serbia were used. The optimal input combinations were selected using partial mutual information algorithm with termination based on the Akaike information criterion. LSI-based splitting has yielded two groups of monitoring sites that were modeled with separate WNN models. The number and types of selected inputs differed between those two groups of sites, which was in agreement with possible pollution sources. Multiple performance metrics have revealed that the WNN models perform similar or better than multisite DO prediction models published in the literature, while using two to four times less inputs and data patterns.",
publisher = "Springer London Ltd, London",
journal = "Neural Computing & Applications",
title = "Multilevel split of high-dimensional water quality data using artificial neural networks for the prediction of dissolved oxygen in the Danube River",
pages = "3966-3957",
number = "8",
volume = "32",
doi = "10.1007/s00521-019-04079-y"
}

Antanasijević, D., Pocajt, V., Perić-Grujić, A.,& Ristić, M.. (2020). Multilevel split of high-dimensional water quality data using artificial neural networks for the prediction of dissolved oxygen in the Danube River. in Neural Computing & Applications
Springer London Ltd, London., 32(8), 3957-3966.
https://doi.org/10.1007/s00521-019-04079-y

Antanasijević D, Pocajt V, Perić-Grujić A, Ristić M. Multilevel split of high-dimensional water quality data using artificial neural networks for the prediction of dissolved oxygen in the Danube River. in Neural Computing & Applications. 2020;32(8):3957-3966.
doi:10.1007/s00521-019-04079-y .

Antanasijević, Davor, Pocajt, Viktor, Perić-Grujić, Aleksandra, Ristić, Mirjana, "Multilevel split of high-dimensional water quality data using artificial neural networks for the prediction of dissolved oxygen in the Danube River" in Neural Computing & Applications, 32, no. 8 (2020):3957-3966,
https://doi.org/10.1007/s00521-019-04079-y . .

TY  - JOUR
AU  - Mladenović, Nataša N.
AU  - Kljajević, Ljiljana M.
AU  - Nenadović, Snežana S.
AU  - Ivanović, Marija D.
AU  - Čalija, Bojan
AU  - Gulicovski, Jelena
AU  - Trivunac, Katarina
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4492
AB  - Fundamental research of inorganic polymers prepared from available aluminosilicate precursors represent an innovative class of materials characterized by low energy consumption for production. This is just one of the reasons why their use is focused in protecting the environment for removing of heavy metals from aqueous solutions. The concentration of hydroxide as activator solution plays an important role in the geopolymerization process. The present study examined the use of geopolymer materials, obtained in reaction of geopolymerizations of metakaolin as precursor activated with NaOH concentration 2.0, 4.0, 6.0 and 8.0 mol/dm(3) for removal of cadmium ions from aqueous solutions. The structure and properties of the obtained geopolymer samples were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and diffuse reflection infrared spectroscopy (DRIFTS). To investigate the surface charge of geopolymers the zeta potential measurements were performed. Batch adsorption experiments conducted at room temperature (23 +/- 1 degrees C) showed that the adsorption pattern followed the Freundlich isotherm model. The maximum removal of cadmium obtained from batch studies was 84.1% for GP6M at pH approximate to 6.7. The results generally showed that geopolymer samples could be considered as a potential adsorbent for cadmium removal from aqueous solutions.
PB  - Springer, Dordrecht
T2  - Journal of Inorganic and Organometallic Polymers and Materials
T1  - The Applications of New Inorganic Polymer for Adsorption Cadmium from Waste Water
EP  - 563
IS  - 2
SP  - 554
VL  - 30
DO  - 10.1007/s10904-019-01215-y
ER  - 

@article{
author = "Mladenović, Nataša N. and Kljajević, Ljiljana M. and Nenadović, Snežana S. and Ivanović, Marija D. and Čalija, Bojan and Gulicovski, Jelena and Trivunac, Katarina",
year = "2020",
abstract = "Fundamental research of inorganic polymers prepared from available aluminosilicate precursors represent an innovative class of materials characterized by low energy consumption for production. This is just one of the reasons why their use is focused in protecting the environment for removing of heavy metals from aqueous solutions. The concentration of hydroxide as activator solution plays an important role in the geopolymerization process. The present study examined the use of geopolymer materials, obtained in reaction of geopolymerizations of metakaolin as precursor activated with NaOH concentration 2.0, 4.0, 6.0 and 8.0 mol/dm(3) for removal of cadmium ions from aqueous solutions. The structure and properties of the obtained geopolymer samples were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and diffuse reflection infrared spectroscopy (DRIFTS). To investigate the surface charge of geopolymers the zeta potential measurements were performed. Batch adsorption experiments conducted at room temperature (23 +/- 1 degrees C) showed that the adsorption pattern followed the Freundlich isotherm model. The maximum removal of cadmium obtained from batch studies was 84.1% for GP6M at pH approximate to 6.7. The results generally showed that geopolymer samples could be considered as a potential adsorbent for cadmium removal from aqueous solutions.",
publisher = "Springer, Dordrecht",
journal = "Journal of Inorganic and Organometallic Polymers and Materials",
title = "The Applications of New Inorganic Polymer for Adsorption Cadmium from Waste Water",
pages = "563-554",
number = "2",
volume = "30",
doi = "10.1007/s10904-019-01215-y"
}

Mladenović, N. N., Kljajević, L. M., Nenadović, S. S., Ivanović, M. D., Čalija, B., Gulicovski, J.,& Trivunac, K.. (2020). The Applications of New Inorganic Polymer for Adsorption Cadmium from Waste Water. in Journal of Inorganic and Organometallic Polymers and Materials
Springer, Dordrecht., 30(2), 554-563.
https://doi.org/10.1007/s10904-019-01215-y

Mladenović NN, Kljajević LM, Nenadović SS, Ivanović MD, Čalija B, Gulicovski J, Trivunac K. The Applications of New Inorganic Polymer for Adsorption Cadmium from Waste Water. in Journal of Inorganic and Organometallic Polymers and Materials. 2020;30(2):554-563.
doi:10.1007/s10904-019-01215-y .

Mladenović, Nataša N., Kljajević, Ljiljana M., Nenadović, Snežana S., Ivanović, Marija D., Čalija, Bojan, Gulicovski, Jelena, Trivunac, Katarina, "The Applications of New Inorganic Polymer for Adsorption Cadmium from Waste Water" in Journal of Inorganic and Organometallic Polymers and Materials, 30, no. 2 (2020):554-563,
https://doi.org/10.1007/s10904-019-01215-y . .

TY  - JOUR
AU  - Kazuz, A.
AU  - Radovanović, Željko
AU  - Veljović, Đorđe
AU  - Kojić, Vesna
AU  - Miletić, Vesna
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4371
AB  - Composite cements based on alpha-tricalcium phosphate (alpha-TCP) and nanostructured fluorapatite (FAp), alpha-TCP/FAp, appropriate for dental usage as root canal filling material, have been prepared with the improved mechanical properties and biocompatibility. The influence of FAp concentration on the composite cement properties was investigated. The processing conditions for FAp powders synthesis were optimized and the powder with optimal properties was chosen to obtain alpha-TCP/FAp composite types of cement alpha-TCP powder was prepared by calcination of hydrothermally synthesized hydroxyapatite (HAp) at 1500 degrees C for 2 h. Morphology and phase composition of powders were investigated by X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FTIR), Field emission scanning electron microscopy (FESEM), and energy dispersive X-ray spectroscopy (EDS). Soaking of alpha-TCP/FAp specimens in simulated body fluid (SBF) affected the successful transformation of alpha-TCP into HAp, while the compressive test revealed the influence of this transformation and FAp content on the mechanical properties of the composites. Specimen containing 5% of FAp after 10 days in SBF showed the highest compressive strength. In vitro MIT and DET biocompatibility tests, performed in the culture of MRC-5 human fibroblast cells, revealed that alpha-TCP/FAp had no cytotoxic effect. These initial findings showed that alpha-TCP/FAp composite cements could yield favorable mechanical properties with no adverse effect on biocompatibility.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - alpha-Tricalcium phosphate/fluorapatite based composite cements: Synthesis, mechanical properties, and biocompatibility
IS  - 16
VL  - 46
DO  - 10.1016/j.ceramint.2020.06.301
ER  - 

@article{
author = "Kazuz, A. and Radovanović, Željko and Veljović, Đorđe and Kojić, Vesna and Miletić, Vesna and Petrović, Rada and Janaćković, Đorđe",
year = "2020",
abstract = "Composite cements based on alpha-tricalcium phosphate (alpha-TCP) and nanostructured fluorapatite (FAp), alpha-TCP/FAp, appropriate for dental usage as root canal filling material, have been prepared with the improved mechanical properties and biocompatibility. The influence of FAp concentration on the composite cement properties was investigated. The processing conditions for FAp powders synthesis were optimized and the powder with optimal properties was chosen to obtain alpha-TCP/FAp composite types of cement alpha-TCP powder was prepared by calcination of hydrothermally synthesized hydroxyapatite (HAp) at 1500 degrees C for 2 h. Morphology and phase composition of powders were investigated by X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FTIR), Field emission scanning electron microscopy (FESEM), and energy dispersive X-ray spectroscopy (EDS). Soaking of alpha-TCP/FAp specimens in simulated body fluid (SBF) affected the successful transformation of alpha-TCP into HAp, while the compressive test revealed the influence of this transformation and FAp content on the mechanical properties of the composites. Specimen containing 5% of FAp after 10 days in SBF showed the highest compressive strength. In vitro MIT and DET biocompatibility tests, performed in the culture of MRC-5 human fibroblast cells, revealed that alpha-TCP/FAp had no cytotoxic effect. These initial findings showed that alpha-TCP/FAp composite cements could yield favorable mechanical properties with no adverse effect on biocompatibility.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "alpha-Tricalcium phosphate/fluorapatite based composite cements: Synthesis, mechanical properties, and biocompatibility",
number = "16",
volume = "46",
doi = "10.1016/j.ceramint.2020.06.301"
}

Kazuz, A., Radovanović, Ž., Veljović, Đ., Kojić, V., Miletić, V., Petrović, R.,& Janaćković, Đ.. (2020). alpha-Tricalcium phosphate/fluorapatite based composite cements: Synthesis, mechanical properties, and biocompatibility. in Ceramics International
Elsevier Sci Ltd, Oxford., 46(16).
https://doi.org/10.1016/j.ceramint.2020.06.301

Kazuz A, Radovanović Ž, Veljović Đ, Kojić V, Miletić V, Petrović R, Janaćković Đ. alpha-Tricalcium phosphate/fluorapatite based composite cements: Synthesis, mechanical properties, and biocompatibility. in Ceramics International. 2020;46(16).
doi:10.1016/j.ceramint.2020.06.301 .

Kazuz, A., Radovanović, Željko, Veljović, Đorđe, Kojić, Vesna, Miletić, Vesna, Petrović, Rada, Janaćković, Đorđe, "alpha-Tricalcium phosphate/fluorapatite based composite cements: Synthesis, mechanical properties, and biocompatibility" in Ceramics International, 46, no. 16 (2020),
https://doi.org/10.1016/j.ceramint.2020.06.301 . .

TY  - JOUR
AU  - Tomašević, Anđelka
AU  - Marinković, Aleksandar
AU  - Mijin, Dušan
AU  - Radišić, Marina
AU  - Porobić, Slavica
AU  - Prlainović, Nevena
AU  - Gašić, Slavica
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4375
AB  - Photocatalytic degradation of the carbamate insecticide methomyl and its commercial product Lannate-90 in aqueous suspension of TiO2 and ZnO using an Osram ultra-vitalux lamp (315-400 nm) was investigated. The objective of the investigation was to study and compare the rates of photochemical degradation of the pure active compound and its formulated product in order to find out the impact of inert ingredients on degradation processes. The photo-chemical degradation of pure methomyl was found to be slower than the degradation of its commercial product Lannate-90. Photodegradation was investigated by UV-Vis spectrometry and HPLC, while mineralization was monitored using IC and TOC analyses. Light absorption capabilities of catalysts were characterized by ultraviolet-visible diffuse reflectance spectroscopy method, while the stability of catalysts was studied by infrared analyses. Degradation products of methomyl and its formulated product were identified by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) results and tentative photodegradation pathways were proposed.
PB  - Savez hemijskih inženjera, Beograd
T2  - Chemical Industry & Chemical Engineering Quarterly
T1  - A study of photocatalytic degradation of methomyl and its commercial product lannate-90
EP  - 247
IS  - 3
SP  - 237
VL  - 26
DO  - 10.2298/CICEQ190424002T
ER  - 

@article{
author = "Tomašević, Anđelka and Marinković, Aleksandar and Mijin, Dušan and Radišić, Marina and Porobić, Slavica and Prlainović, Nevena and Gašić, Slavica",
year = "2020",
abstract = "Photocatalytic degradation of the carbamate insecticide methomyl and its commercial product Lannate-90 in aqueous suspension of TiO2 and ZnO using an Osram ultra-vitalux lamp (315-400 nm) was investigated. The objective of the investigation was to study and compare the rates of photochemical degradation of the pure active compound and its formulated product in order to find out the impact of inert ingredients on degradation processes. The photo-chemical degradation of pure methomyl was found to be slower than the degradation of its commercial product Lannate-90. Photodegradation was investigated by UV-Vis spectrometry and HPLC, while mineralization was monitored using IC and TOC analyses. Light absorption capabilities of catalysts were characterized by ultraviolet-visible diffuse reflectance spectroscopy method, while the stability of catalysts was studied by infrared analyses. Degradation products of methomyl and its formulated product were identified by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) results and tentative photodegradation pathways were proposed.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Chemical Industry & Chemical Engineering Quarterly",
title = "A study of photocatalytic degradation of methomyl and its commercial product lannate-90",
pages = "247-237",
number = "3",
volume = "26",
doi = "10.2298/CICEQ190424002T"
}

Tomašević, A., Marinković, A., Mijin, D., Radišić, M., Porobić, S., Prlainović, N.,& Gašić, S.. (2020). A study of photocatalytic degradation of methomyl and its commercial product lannate-90. in Chemical Industry & Chemical Engineering Quarterly
Savez hemijskih inženjera, Beograd., 26(3), 237-247.
https://doi.org/10.2298/CICEQ190424002T

Tomašević A, Marinković A, Mijin D, Radišić M, Porobić S, Prlainović N, Gašić S. A study of photocatalytic degradation of methomyl and its commercial product lannate-90. in Chemical Industry & Chemical Engineering Quarterly. 2020;26(3):237-247.
doi:10.2298/CICEQ190424002T .

Tomašević, Anđelka, Marinković, Aleksandar, Mijin, Dušan, Radišić, Marina, Porobić, Slavica, Prlainović, Nevena, Gašić, Slavica, "A study of photocatalytic degradation of methomyl and its commercial product lannate-90" in Chemical Industry & Chemical Engineering Quarterly, 26, no. 3 (2020):237-247,
https://doi.org/10.2298/CICEQ190424002T . .

TY  - JOUR
AU  - Ayoub, Giuma
AU  - Ležaja-Zebić, Maja
AU  - Miletić, Vesna
AU  - Petrović, Rada
AU  - Veljović, Đorđe
AU  - Janaćković, Đorđe
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4476
AB  - The application of sintered calcium phosphate dental inserts in the central part of tooth cavities can reduce amount of embedded dental composite and polymerization shrinkage of final dental fillings. The aim of this study was to analyze comparatively physico-chemical and mechanical properties of dental inserts and shear bond strength (SBS) between three dissimilar hydroxyapatite-based dental inserts and different restorative materials, after application of different clinical protocols. Starting from two different hydroxyapatite nano powders and nanostructured stabilized zirconia (YSZ), monophasic two-step sintered dense HAp inserts (TSSHAp), biphasic single-step sintered controlled porous inserts (HAp/TCp), and single-step sintered reinforced HAp/YSZ inserts were processed and characterized. Obvious differences in the microstructure of inserts surface were visualized after etching with 37% phosphoric acid. Fracture toughness of sintered inserts was ranged between 1.01 and 1.85 MPam(1/2) (maximum value in the case of HAp/YSZ), while hardness values were in the range of 3.71-5.22 GPa (maximum value in the case of TSSHAp). Acid etching before application improved SBS between inserts and Maxcem compared to direct cement application. TSSHAp and HAP/TCp inserts showed comparable and relatively high SBS values, certainly higher compared to HAp/YSZ inserts. Slightly higher SBS values were measured in the case of TSSHAp insert group, and the highest mean SBS value of 18.51 MPa was determined between TSSHAp inserts and Filtek Z250_SBU following the "self-etch" protocol.
PB  - Wiley, Hoboken
T2  - Journal of Biomedical Materials Research Part B-Applied Biomaterials
T1  - Dissimilar sintered calcium phosphate dental inserts as dentine substitutes: Shear bond strength to restorative materials
EP  - 2470
IS  - 6
SP  - 2461
VL  - 108
DO  - 10.1002/jbm.b.34578
ER  - 

@article{
author = "Ayoub, Giuma and Ležaja-Zebić, Maja and Miletić, Vesna and Petrović, Rada and Veljović, Đorđe and Janaćković, Đorđe",
year = "2020",
abstract = "The application of sintered calcium phosphate dental inserts in the central part of tooth cavities can reduce amount of embedded dental composite and polymerization shrinkage of final dental fillings. The aim of this study was to analyze comparatively physico-chemical and mechanical properties of dental inserts and shear bond strength (SBS) between three dissimilar hydroxyapatite-based dental inserts and different restorative materials, after application of different clinical protocols. Starting from two different hydroxyapatite nano powders and nanostructured stabilized zirconia (YSZ), monophasic two-step sintered dense HAp inserts (TSSHAp), biphasic single-step sintered controlled porous inserts (HAp/TCp), and single-step sintered reinforced HAp/YSZ inserts were processed and characterized. Obvious differences in the microstructure of inserts surface were visualized after etching with 37% phosphoric acid. Fracture toughness of sintered inserts was ranged between 1.01 and 1.85 MPam(1/2) (maximum value in the case of HAp/YSZ), while hardness values were in the range of 3.71-5.22 GPa (maximum value in the case of TSSHAp). Acid etching before application improved SBS between inserts and Maxcem compared to direct cement application. TSSHAp and HAP/TCp inserts showed comparable and relatively high SBS values, certainly higher compared to HAp/YSZ inserts. Slightly higher SBS values were measured in the case of TSSHAp insert group, and the highest mean SBS value of 18.51 MPa was determined between TSSHAp inserts and Filtek Z250_SBU following the "self-etch" protocol.",
publisher = "Wiley, Hoboken",
journal = "Journal of Biomedical Materials Research Part B-Applied Biomaterials",
title = "Dissimilar sintered calcium phosphate dental inserts as dentine substitutes: Shear bond strength to restorative materials",
pages = "2470-2461",
number = "6",
volume = "108",
doi = "10.1002/jbm.b.34578"
}

Ayoub, G., Ležaja-Zebić, M., Miletić, V., Petrović, R., Veljović, Đ.,& Janaćković, Đ.. (2020). Dissimilar sintered calcium phosphate dental inserts as dentine substitutes: Shear bond strength to restorative materials. in Journal of Biomedical Materials Research Part B-Applied Biomaterials
Wiley, Hoboken., 108(6), 2461-2470.
https://doi.org/10.1002/jbm.b.34578

Ayoub G, Ležaja-Zebić M, Miletić V, Petrović R, Veljović Đ, Janaćković Đ. Dissimilar sintered calcium phosphate dental inserts as dentine substitutes: Shear bond strength to restorative materials. in Journal of Biomedical Materials Research Part B-Applied Biomaterials. 2020;108(6):2461-2470.
doi:10.1002/jbm.b.34578 .

Ayoub, Giuma, Ležaja-Zebić, Maja, Miletić, Vesna, Petrović, Rada, Veljović, Đorđe, Janaćković, Đorđe, "Dissimilar sintered calcium phosphate dental inserts as dentine substitutes: Shear bond strength to restorative materials" in Journal of Biomedical Materials Research Part B-Applied Biomaterials, 108, no. 6 (2020):2461-2470,
https://doi.org/10.1002/jbm.b.34578 . .

TY  - CONF
AU  - Karić, Nataša
AU  - Gržetić, Jelena
AU  - Kovačević, Tihomir
AU  - Marinković, Aleksandar
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6121
AB  - The starch oxidation involves oxidation of primary or secondary hydroxyl to carbonyl
or carboxyl groups, whereas the number of these groups indicates the level of oxidation.
Oxidized starch is used as surface sizing agent and coating binder in the paper industry,
or as polymeric filler that increases the polymer degradability. The main objective of the
presented study is to investigate the effects of various parameters on the oxidation
process of the wheat starch, using dry method (Fig. 1). These parameters include
oxidizer concentration, catalyst type (iron(II) sulphate, copper(II) sulphate and
copper(II) citrate), presence of plasticizers/modifiers (ricinoleic acid, (R-(Z))-12-
hydroxy-9-octadecenoic acid, RA) and diizopropyl tartarate ((dipropan-2-yl 2,3-
dihydroxybutanedioate, DIPT) and reaction temperature (20 and 80 °C). The obtained
results suggest that higher values of carbonyl and carboxyl groups lead to an increase of
swelling capacity and solubility, while viscosity decreases, compared to the native wheat
starch. The analysis of FTIR spectra, especially region of carbonyl/carboxyl groups
absorption, reveals high impact of process parameters on the oxidation degree and band
structure. The morphology of native and oxidized starches, investigated by the SEM
method, shows that after oxidation the surface of the starch particles becomes smoother
then for the native starch, with aggregation of small and large-sized granules.
C3  - 7th Conference of the Young Chemists of Serbia
T1  - Preparation and characterization of oxidized wheat starch with hydrogen peroxide as an environmentally friendly oxidant
SP  - 144
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6121
ER  - 

@conference{
author = "Karić, Nataša and Gržetić, Jelena and Kovačević, Tihomir and Marinković, Aleksandar",
year = "2019",
abstract = "The starch oxidation involves oxidation of primary or secondary hydroxyl to carbonyl
or carboxyl groups, whereas the number of these groups indicates the level of oxidation.
Oxidized starch is used as surface sizing agent and coating binder in the paper industry,
or as polymeric filler that increases the polymer degradability. The main objective of the
presented study is to investigate the effects of various parameters on the oxidation
process of the wheat starch, using dry method (Fig. 1). These parameters include
oxidizer concentration, catalyst type (iron(II) sulphate, copper(II) sulphate and
copper(II) citrate), presence of plasticizers/modifiers (ricinoleic acid, (R-(Z))-12-
hydroxy-9-octadecenoic acid, RA) and diizopropyl tartarate ((dipropan-2-yl 2,3-
dihydroxybutanedioate, DIPT) and reaction temperature (20 and 80 °C). The obtained
results suggest that higher values of carbonyl and carboxyl groups lead to an increase of
swelling capacity and solubility, while viscosity decreases, compared to the native wheat
starch. The analysis of FTIR spectra, especially region of carbonyl/carboxyl groups
absorption, reveals high impact of process parameters on the oxidation degree and band
structure. The morphology of native and oxidized starches, investigated by the SEM
method, shows that after oxidation the surface of the starch particles becomes smoother
then for the native starch, with aggregation of small and large-sized granules.",
journal = "7th Conference of the Young Chemists of Serbia",
title = "Preparation and characterization of oxidized wheat starch with hydrogen peroxide as an environmentally friendly oxidant",
pages = "144",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6121"
}

Karić, N., Gržetić, J., Kovačević, T.,& Marinković, A.. (2019). Preparation and characterization of oxidized wheat starch with hydrogen peroxide as an environmentally friendly oxidant. in 7th Conference of the Young Chemists of Serbia, 144.
https://hdl.handle.net/21.15107/rcub_technorep_6121

Karić N, Gržetić J, Kovačević T, Marinković A. Preparation and characterization of oxidized wheat starch with hydrogen peroxide as an environmentally friendly oxidant. in 7th Conference of the Young Chemists of Serbia. 2019;:144.
https://hdl.handle.net/21.15107/rcub_technorep_6121 .

Karić, Nataša, Gržetić, Jelena, Kovačević, Tihomir, Marinković, Aleksandar, "Preparation and characterization of oxidized wheat starch with hydrogen peroxide as an environmentally friendly oxidant" in 7th Conference of the Young Chemists of Serbia (2019):144,
https://hdl.handle.net/21.15107/rcub_technorep_6121 .

TY  - JOUR
AU  - Maletić, Marina
AU  - Vukčević, Marija
AU  - Kalijadis, Ana
AU  - Janković-Častvan, Ivona
AU  - Dapčević, Aleksandra
AU  - Laušević, Zoran
AU  - Laušević, Mila
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4095
AB  - TiO2/carbon composites were synthesized by hydrothermal carbonization, using titanium isopropoxide and glucose precursor solution to obtain composites with Ti/C molar ratios ranging from 0.05 to 0.30. Characterization of obtained composites was performed by thermogravimetric analysis, scanning electron microscopy, nitrogen adsorption-desorption isotherms, X-ray diffraction, UV-Vis diffuse reflectance spectroscopy and Fourier transform infrared spectroscopy. The possibility of using TiO2/carbon composites as photocatalysts for UV assisted degradation of methylene blue in aqueous solution and selected pharmaceuticals from multicomponent solution was examined. It was found that increase in the glucose concentration, i.e. increased carbon content, leads to the higher porosity and increase in the share of photocatalytically active anatase phase in obtained TiO2/carbon composites. Sample obtained from the most concentrated glucose solution (TiO2/HTC4), showed the superior photocatalytic activity under UV irradiation toward both methylene blue and selected pharmaceuticals. In addition, TiO2/HTC4 show high recycling ability with degradation ratio of methylene blue higher than 81% after five cycles. Also, TiO2/HTC4 is expected to be a promising candidate for photocatalytic processes using visible light.
PB  - Elsevier, Amsterdam
T2  - Arabian Journal of Chemistry
T1  - Hydrothermal synthesis of TiO2/carbon composites and their application for removal of organic pollutants
EP  - 4397
IS  - 8
SP  - 4388
VL  - 12
DO  - 10.1016/j.arabjc.2016.06.020
ER  - 

@article{
author = "Maletić, Marina and Vukčević, Marija and Kalijadis, Ana and Janković-Častvan, Ivona and Dapčević, Aleksandra and Laušević, Zoran and Laušević, Mila",
year = "2019",
abstract = "TiO2/carbon composites were synthesized by hydrothermal carbonization, using titanium isopropoxide and glucose precursor solution to obtain composites with Ti/C molar ratios ranging from 0.05 to 0.30. Characterization of obtained composites was performed by thermogravimetric analysis, scanning electron microscopy, nitrogen adsorption-desorption isotherms, X-ray diffraction, UV-Vis diffuse reflectance spectroscopy and Fourier transform infrared spectroscopy. The possibility of using TiO2/carbon composites as photocatalysts for UV assisted degradation of methylene blue in aqueous solution and selected pharmaceuticals from multicomponent solution was examined. It was found that increase in the glucose concentration, i.e. increased carbon content, leads to the higher porosity and increase in the share of photocatalytically active anatase phase in obtained TiO2/carbon composites. Sample obtained from the most concentrated glucose solution (TiO2/HTC4), showed the superior photocatalytic activity under UV irradiation toward both methylene blue and selected pharmaceuticals. In addition, TiO2/HTC4 show high recycling ability with degradation ratio of methylene blue higher than 81% after five cycles. Also, TiO2/HTC4 is expected to be a promising candidate for photocatalytic processes using visible light.",
publisher = "Elsevier, Amsterdam",
journal = "Arabian Journal of Chemistry",
title = "Hydrothermal synthesis of TiO2/carbon composites and their application for removal of organic pollutants",
pages = "4397-4388",
number = "8",
volume = "12",
doi = "10.1016/j.arabjc.2016.06.020"
}

Maletić, M., Vukčević, M., Kalijadis, A., Janković-Častvan, I., Dapčević, A., Laušević, Z.,& Laušević, M.. (2019). Hydrothermal synthesis of TiO2/carbon composites and their application for removal of organic pollutants. in Arabian Journal of Chemistry
Elsevier, Amsterdam., 12(8), 4388-4397.
https://doi.org/10.1016/j.arabjc.2016.06.020

Maletić M, Vukčević M, Kalijadis A, Janković-Častvan I, Dapčević A, Laušević Z, Laušević M. Hydrothermal synthesis of TiO2/carbon composites and their application for removal of organic pollutants. in Arabian Journal of Chemistry. 2019;12(8):4388-4397.
doi:10.1016/j.arabjc.2016.06.020 .

Maletić, Marina, Vukčević, Marija, Kalijadis, Ana, Janković-Častvan, Ivona, Dapčević, Aleksandra, Laušević, Zoran, Laušević, Mila, "Hydrothermal synthesis of TiO2/carbon composites and their application for removal of organic pollutants" in Arabian Journal of Chemistry, 12, no. 8 (2019):4388-4397,
https://doi.org/10.1016/j.arabjc.2016.06.020 . .

TY  - CONF
AU  - Prokić, Danijela
AU  - Matić Bujagić, Ivana
AU  - Vukčević, Marija
AU  - Kalijadis, Ana
AU  - Đurkić, Tatjana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6086
AB  - Prisustvo estrogenih hormona u vodenoj sredini, čak i u veoma niskim koncentracijama,
može imati ozbiljne negativne efekte na zdravlje ljudi i akvatičnih životinja. Stoga je važan razvoj
metoda za praćenje prisustva tragova ovih supstanci u vodi. Koncentracije estrogenih hormona u
vodi su reda veličine ng/l, pa je za njihovu detekciju i kvantifikaciju potrebno razviti efikasnu
tehniku pripreme uzorka, koja obuhvata izolovanje i predkoncentrisanje analita. U ovom radu
ispitivana je mogućnost ekstrakcije estrogenih hormona (estrona, 17β-estradiola i 17α-
etinilestradiola) iz vodenih rastvora na čvrstoj fazi, uz korišćenje nemodifikovane i hemijski
modifikovane aktivirane ugljenične tkanine (ACC) kao adsorbenta. Metoda disperzivne ekstrakcije
na čvrstoj fazi za predkoncentrisanje hormona na ACC optimizovana je izborom odgovarajućeg
organskog rastvarača, temperature na kojoj se vrši predkoncentrisanje kao i odabirom
najefikasnijeg adsorbensa. Koncentracija ispitivanih hormona nakon ekstrakcije određivana je
metodom tečne hromatografije u sprezi sa tandem masenom spektrometrijom.
PB  - Beogradska politehnika
C3  - 5. Naučno-stručni skup Politehnika
T1  - Ekstrakcija estrogenih hormona iz vode korišćenjem aktivirane ugljenične tkanine kao adsorbenta
EP  - 208
SP  - 204
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6086
ER  - 

@conference{
author = "Prokić, Danijela and Matić Bujagić, Ivana and Vukčević, Marija and Kalijadis, Ana and Đurkić, Tatjana",
year = "2019",
abstract = "Prisustvo estrogenih hormona u vodenoj sredini, čak i u veoma niskim koncentracijama,
može imati ozbiljne negativne efekte na zdravlje ljudi i akvatičnih životinja. Stoga je važan razvoj
metoda za praćenje prisustva tragova ovih supstanci u vodi. Koncentracije estrogenih hormona u
vodi su reda veličine ng/l, pa je za njihovu detekciju i kvantifikaciju potrebno razviti efikasnu
tehniku pripreme uzorka, koja obuhvata izolovanje i predkoncentrisanje analita. U ovom radu
ispitivana je mogućnost ekstrakcije estrogenih hormona (estrona, 17β-estradiola i 17α-
etinilestradiola) iz vodenih rastvora na čvrstoj fazi, uz korišćenje nemodifikovane i hemijski
modifikovane aktivirane ugljenične tkanine (ACC) kao adsorbenta. Metoda disperzivne ekstrakcije
na čvrstoj fazi za predkoncentrisanje hormona na ACC optimizovana je izborom odgovarajućeg
organskog rastvarača, temperature na kojoj se vrši predkoncentrisanje kao i odabirom
najefikasnijeg adsorbensa. Koncentracija ispitivanih hormona nakon ekstrakcije određivana je
metodom tečne hromatografije u sprezi sa tandem masenom spektrometrijom.",
publisher = "Beogradska politehnika",
journal = "5. Naučno-stručni skup Politehnika",
title = "Ekstrakcija estrogenih hormona iz vode korišćenjem aktivirane ugljenične tkanine kao adsorbenta",
pages = "208-204",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6086"
}

Prokić, D., Matić Bujagić, I., Vukčević, M., Kalijadis, A.,& Đurkić, T.. (2019). Ekstrakcija estrogenih hormona iz vode korišćenjem aktivirane ugljenične tkanine kao adsorbenta. in 5. Naučno-stručni skup Politehnika
Beogradska politehnika., 204-208.
https://hdl.handle.net/21.15107/rcub_technorep_6086

Prokić D, Matić Bujagić I, Vukčević M, Kalijadis A, Đurkić T. Ekstrakcija estrogenih hormona iz vode korišćenjem aktivirane ugljenične tkanine kao adsorbenta. in 5. Naučno-stručni skup Politehnika. 2019;:204-208.
https://hdl.handle.net/21.15107/rcub_technorep_6086 .

Prokić, Danijela, Matić Bujagić, Ivana, Vukčević, Marija, Kalijadis, Ana, Đurkić, Tatjana, "Ekstrakcija estrogenih hormona iz vode korišćenjem aktivirane ugljenične tkanine kao adsorbenta" in 5. Naučno-stručni skup Politehnika (2019):204-208,
https://hdl.handle.net/21.15107/rcub_technorep_6086 .

TY  - JOUR
AU  - Maksin, Danijela
AU  - Vukčević, Marija
AU  - Đurkić, Tatjana
AU  - Stanišić, Ivana
AU  - Bakić, Tamara
AU  - Radomirović, Milena
AU  - Onjia, Antonije
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7100
AB  - Rare earth metals are deemed to be the materials of future due to their numerous applications including medical diagnostics, nuclear facilities, petroleum industry, etc. In this paper, multi-walled carbon nanotubes, which possess unique physicochemical properties, were evaluated as sorbents for lanthanoid gadolinium from aqueous solutions. The pH-dependent sorption behavior of Gd was studied in the pH range from 3 to 11 at room temperature (298 K). Equilibrium data over a range of initial Gd concentrations of 5−50 mg L−1 was analyzed with Langmuir, Freundlich and Redlich-Peterson models. Sorption kinetics was fitted with the pseudo-first-order, the pseudo-second-order and fractional power kinetic models.
AB  - Retke zemlje se smatraju materijalima budućnosti zahvaljujući
svojim brojnim primenama, u koje spadaju medicinska dijagnostika, nuklearna
postrojenja, naftna industrija, itd. Višeslojne ugljenične nanotube, koje imaju
jedinstvena fizičko-hemijska svojstva, u ovom radu su ispitane kao sorbenti
lantanoida gadolinijuma iz vodenih rastvora. Zavisnost sorpcije Gd od pH ispitivana je u opsegu pH 3‒11 na sobnoj temperaturi (298 K). Ravnotežna sorpcija
u opsegu početnih koncentracija 5‒50 mg L−1
analizirana je Langmirovim,
Frojndlihovim i Redlih‒Petersonovim modelima. Kinetika sorpcije analizirana
je modelima pseudoprvog reda, pseudodrugog reda i frakcionog stepena.
PB  - Academy of Sciences and Arts of the Republic of Srpska
T2  - Contemporary Materials
T1  - Gadolinium sorption on multi-walled carbon nanotubes
T1  - Sorpcija gadolinijuma na višeslojnim ugljeničnim nanotubama
EP  - 46
IS  - 1
SP  - 35
VL  - 10
DO  - 10.7251/COMEN1901035M
ER  - 

@article{
author = "Maksin, Danijela and Vukčević, Marija and Đurkić, Tatjana and Stanišić, Ivana and Bakić, Tamara and Radomirović, Milena and Onjia, Antonije",
year = "2019",
abstract = "Rare earth metals are deemed to be the materials of future due to their numerous applications including medical diagnostics, nuclear facilities, petroleum industry, etc. In this paper, multi-walled carbon nanotubes, which possess unique physicochemical properties, were evaluated as sorbents for lanthanoid gadolinium from aqueous solutions. The pH-dependent sorption behavior of Gd was studied in the pH range from 3 to 11 at room temperature (298 K). Equilibrium data over a range of initial Gd concentrations of 5−50 mg L−1 was analyzed with Langmuir, Freundlich and Redlich-Peterson models. Sorption kinetics was fitted with the pseudo-first-order, the pseudo-second-order and fractional power kinetic models., Retke zemlje se smatraju materijalima budućnosti zahvaljujući
svojim brojnim primenama, u koje spadaju medicinska dijagnostika, nuklearna
postrojenja, naftna industrija, itd. Višeslojne ugljenične nanotube, koje imaju
jedinstvena fizičko-hemijska svojstva, u ovom radu su ispitane kao sorbenti
lantanoida gadolinijuma iz vodenih rastvora. Zavisnost sorpcije Gd od pH ispitivana je u opsegu pH 3‒11 na sobnoj temperaturi (298 K). Ravnotežna sorpcija
u opsegu početnih koncentracija 5‒50 mg L−1
analizirana je Langmirovim,
Frojndlihovim i Redlih‒Petersonovim modelima. Kinetika sorpcije analizirana
je modelima pseudoprvog reda, pseudodrugog reda i frakcionog stepena.",
publisher = "Academy of Sciences and Arts of the Republic of Srpska",
journal = "Contemporary Materials",
title = "Gadolinium sorption on multi-walled carbon nanotubes, Sorpcija gadolinijuma na višeslojnim ugljeničnim nanotubama",
pages = "46-35",
number = "1",
volume = "10",
doi = "10.7251/COMEN1901035M"
}

Maksin, D., Vukčević, M., Đurkić, T., Stanišić, I., Bakić, T., Radomirović, M.,& Onjia, A.. (2019). Gadolinium sorption on multi-walled carbon nanotubes. in Contemporary Materials
Academy of Sciences and Arts of the Republic of Srpska., 10(1), 35-46.
https://doi.org/10.7251/COMEN1901035M

Maksin D, Vukčević M, Đurkić T, Stanišić I, Bakić T, Radomirović M, Onjia A. Gadolinium sorption on multi-walled carbon nanotubes. in Contemporary Materials. 2019;10(1):35-46.
doi:10.7251/COMEN1901035M .

Maksin, Danijela, Vukčević, Marija, Đurkić, Tatjana, Stanišić, Ivana, Bakić, Tamara, Radomirović, Milena, Onjia, Antonije, "Gadolinium sorption on multi-walled carbon nanotubes" in Contemporary Materials, 10, no. 1 (2019):35-46,
https://doi.org/10.7251/COMEN1901035M . .

TY  - CONF
AU  - Gvozdić, Eleonora
AU  - Matić Bujagić, Ivana
AU  - Đurkić, Tatjana
AU  - Grujić, Svetlana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5935
AB  - Široka primena veštačkih zaslađivača u prehrambenoj i farmaceutskoj industriji počela je početkom osamdesetih godina prošlog veka. Većina ovih jedinjenja se ne metaboliše u ljudskom telu i izlučuje se uglavnom nepromenjena. Glavni izvor veštačkih zaslađivača u životnoj sredini predstavljaju komunalne otpadne vode. Zbog ograničenih podataka o njihovoj ekotoksičnosti i ponašanju u životnoj sredini, svrstani su u klasu emergentnih zagađujućih materija. Dosadašnja istraživanja su pokazala široku rasprostranjenost ovih jedinjenja u površinskim i podzemnim vodama.
 U ovom radu je razvijena i optimizovana metoda pripreme uzoraka otpadne vode ekstrakcijom na čvrstoj fazi za analizu veštačkog zaslađivača saharina. Izvršen je odabir optimalnog sorbenta, pH vrednosti i zapremine uzorka vode, kao i rastvarača za eluiranje saharina sa pakovanja kolone. Dobijeni ekstrakti su analizirani metodom tečne hromatografije sa tandem masenom spektrometrijom. Razvijena metoda je primenjena na uzorke otpadnih voda iz tri kanalizaciona ispusta u Beogradu i okolini. Detektovane koncentracije saharina su bile u opsegu od 2,9 µg L–1 do 13,5 µg L–1.
AB  - The widespread use of artificial sweeteners in the food and pharmaceutical industry
started at the beginning of the 1980s. Most of these compounds are not metabolized in human body
and are excreted mostly unchanged. Communal wastewater is the main source of artificial
sweeteners in the environment. Due to limited data on their ecotoxicity and fate in the environment,
they are classified as emerging pollutants. Previous research has shown the wide distribution of
these compounds in surface and ground water. In this paper, the method of preparation of
wastewater samples was developed and optimized using the solid-phase extraction for the analysis
of artificial sweetener saccharin. The sorbent type, the pH and the volume of the water sample, as
well as the elution solvent were tested in the sample preparation optimization. The obtained
extracts were analyzed by liquid chromatography–tandem mass spectrometry. The developed
method was applied to wastewater samples collected from three sewage discharges in Belgrade and
the surroundings. The detected concentrations of saccharin were in the range from 2.9 μg L–1
 to
13.5 μg L–1
.
PB  - Beograd : Beogradska politehnika
C3  - Zbornik radova / Peti naučno-stručni skup Politehnika 5, Beograd, 13. decembar 2019.godine
T1  - Određivanje veštačkog zaslađivača saharina u uzorcima otpadne vode
T1  - Determination of artificial sweetener saccharin in wastewater samples
EP  - 224
SP  - 220
UR  - https://hdl.handle.net/21.15107/rcub_technorep_5935
ER  - 

@conference{
author = "Gvozdić, Eleonora and Matić Bujagić, Ivana and Đurkić, Tatjana and Grujić, Svetlana",
year = "2019",
abstract = "Široka primena veštačkih zaslađivača u prehrambenoj i farmaceutskoj industriji počela je početkom osamdesetih godina prošlog veka. Većina ovih jedinjenja se ne metaboliše u ljudskom telu i izlučuje se uglavnom nepromenjena. Glavni izvor veštačkih zaslađivača u životnoj sredini predstavljaju komunalne otpadne vode. Zbog ograničenih podataka o njihovoj ekotoksičnosti i ponašanju u životnoj sredini, svrstani su u klasu emergentnih zagađujućih materija. Dosadašnja istraživanja su pokazala široku rasprostranjenost ovih jedinjenja u površinskim i podzemnim vodama.
 U ovom radu je razvijena i optimizovana metoda pripreme uzoraka otpadne vode ekstrakcijom na čvrstoj fazi za analizu veštačkog zaslađivača saharina. Izvršen je odabir optimalnog sorbenta, pH vrednosti i zapremine uzorka vode, kao i rastvarača za eluiranje saharina sa pakovanja kolone. Dobijeni ekstrakti su analizirani metodom tečne hromatografije sa tandem masenom spektrometrijom. Razvijena metoda je primenjena na uzorke otpadnih voda iz tri kanalizaciona ispusta u Beogradu i okolini. Detektovane koncentracije saharina su bile u opsegu od 2,9 µg L–1 do 13,5 µg L–1., The widespread use of artificial sweeteners in the food and pharmaceutical industry
started at the beginning of the 1980s. Most of these compounds are not metabolized in human body
and are excreted mostly unchanged. Communal wastewater is the main source of artificial
sweeteners in the environment. Due to limited data on their ecotoxicity and fate in the environment,
they are classified as emerging pollutants. Previous research has shown the wide distribution of
these compounds in surface and ground water. In this paper, the method of preparation of
wastewater samples was developed and optimized using the solid-phase extraction for the analysis
of artificial sweetener saccharin. The sorbent type, the pH and the volume of the water sample, as
well as the elution solvent were tested in the sample preparation optimization. The obtained
extracts were analyzed by liquid chromatography–tandem mass spectrometry. The developed
method was applied to wastewater samples collected from three sewage discharges in Belgrade and
the surroundings. The detected concentrations of saccharin were in the range from 2.9 μg L–1
 to
13.5 μg L–1
.",
publisher = "Beograd : Beogradska politehnika",
journal = "Zbornik radova / Peti naučno-stručni skup Politehnika 5, Beograd, 13. decembar 2019.godine",
title = "Određivanje veštačkog zaslađivača saharina u uzorcima otpadne vode, Determination of artificial sweetener saccharin in wastewater samples",
pages = "224-220",
url = "https://hdl.handle.net/21.15107/rcub_technorep_5935"
}

Gvozdić, E., Matić Bujagić, I., Đurkić, T.,& Grujić, S.. (2019). Određivanje veštačkog zaslađivača saharina u uzorcima otpadne vode. in Zbornik radova / Peti naučno-stručni skup Politehnika 5, Beograd, 13. decembar 2019.godine
Beograd : Beogradska politehnika., 220-224.
https://hdl.handle.net/21.15107/rcub_technorep_5935

Gvozdić E, Matić Bujagić I, Đurkić T, Grujić S. Određivanje veštačkog zaslađivača saharina u uzorcima otpadne vode. in Zbornik radova / Peti naučno-stručni skup Politehnika 5, Beograd, 13. decembar 2019.godine. 2019;:220-224.
https://hdl.handle.net/21.15107/rcub_technorep_5935 .

Gvozdić, Eleonora, Matić Bujagić, Ivana, Đurkić, Tatjana, Grujić, Svetlana, "Određivanje veštačkog zaslađivača saharina u uzorcima otpadne vode" in Zbornik radova / Peti naučno-stručni skup Politehnika 5, Beograd, 13. decembar 2019.godine (2019):220-224,
https://hdl.handle.net/21.15107/rcub_technorep_5935 .

TY  - CONF
AU  - Gvozdić, Eleonora Ž.
AU  - Matić Bujagić, Ivana V.
AU  - Grujić, Svetlana D.
AU  - Đurkić, Tatjana M.
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5936
AB  - Veštački zaslađivači predstavljaju emergentne zagađujuće materije u životnoj sredini. Decenijama se koriste kao aditivi u ishrani i farmaceutskim proizvodima zbog čega su široko rasprostranjeni u prirodnim vodama usled nepotpunog prečišćavanja otpadnih voda. Međutim, pojedini zaslađivači, poput neotama, poseduju visok afinitet za adsorpciju na sedimentu prilikom raspodele u sistemu voda-sediment. Zbog toga je u ovom radu razvijen i optimizovan postupak pripreme uzoraka sedimenata metodom ultrazvučne ekstrakcije za određivanje tragova neotama. Nakon predtretmana, rečni sedimenti (2 g) su ekstrahovani pomoću dihlormetana (3  5 cm3) u ultrazvučnom kupatilu u trajanju od 3  5 min. Dobijeni ekstrakti su analizirani metodom tečne hromatografije sa tandem masenom spektrometrijom. Razvijena metoda je primenjena na uzorke sedimenata iz nekoliko reka u Srbiji – Tise, Morave, Save i Dunava. Po prvi put, dobijeni su podaci o stepenu zagađenosti sedimenata u Srbiji veštačkim zaslađivačem neotamom, detektovanom u koncentracijama od 2 do 56 µg g–1.
AB  - Artificial sweeteners are known as emerging pollutants in the environment. For decades
they have been used as food and pharmaceutical additives, which is why they are
widespread in natural waters, due to incomplete wastewater treatment. However, some
sweeteners, such as neotame, possess a high sorption affinity and partition to sediment in
the water-sediment system. Therefore, in this paper, a method for the sediment sample
preparation using an ultrasonic extraction for determination of neotame traces was
developed and optimized. After pre-treatment, river sediments (2 g) were extracted using
dichloromethane (3  5 cm3
) in an ultrasonic bath for 3  5 min. The obtained extracts were
analyzed by liquid chromatography with tandem mass spectrometry. The developed
method was applied to sediment samples from several rivers in Serbia – the Tisza, the
Morava, the Sava and the Danube. For the first time, data on the contamination level of
sediments in Serbia with artificial sweetener neotame (in the concentration range from 2
to 48 µg g
–1
) were obtained.
PB  - Beograd : Srpsko hemijsko društvo
C3  - Kratki izvodi radova / 56. savetovanje Srpskog hemijskog društva , Niš 7. i 8. juni 2019
T1  - Određivanje veštačkog zaslađivača neotama u rečnim sedimentima
T1  - Determination of artificial sweetener neotame in river sediments
SP  - 11
UR  - https://hdl.handle.net/21.15107/rcub_technorep_5936
ER  - 

@conference{
author = "Gvozdić, Eleonora Ž. and Matić Bujagić, Ivana V. and Grujić, Svetlana D. and Đurkić, Tatjana M.",
year = "2019",
abstract = "Veštački zaslađivači predstavljaju emergentne zagađujuće materije u životnoj sredini. Decenijama se koriste kao aditivi u ishrani i farmaceutskim proizvodima zbog čega su široko rasprostranjeni u prirodnim vodama usled nepotpunog prečišćavanja otpadnih voda. Međutim, pojedini zaslađivači, poput neotama, poseduju visok afinitet za adsorpciju na sedimentu prilikom raspodele u sistemu voda-sediment. Zbog toga je u ovom radu razvijen i optimizovan postupak pripreme uzoraka sedimenata metodom ultrazvučne ekstrakcije za određivanje tragova neotama. Nakon predtretmana, rečni sedimenti (2 g) su ekstrahovani pomoću dihlormetana (3  5 cm3) u ultrazvučnom kupatilu u trajanju od 3  5 min. Dobijeni ekstrakti su analizirani metodom tečne hromatografije sa tandem masenom spektrometrijom. Razvijena metoda je primenjena na uzorke sedimenata iz nekoliko reka u Srbiji – Tise, Morave, Save i Dunava. Po prvi put, dobijeni su podaci o stepenu zagađenosti sedimenata u Srbiji veštačkim zaslađivačem neotamom, detektovanom u koncentracijama od 2 do 56 µg g–1., Artificial sweeteners are known as emerging pollutants in the environment. For decades
they have been used as food and pharmaceutical additives, which is why they are
widespread in natural waters, due to incomplete wastewater treatment. However, some
sweeteners, such as neotame, possess a high sorption affinity and partition to sediment in
the water-sediment system. Therefore, in this paper, a method for the sediment sample
preparation using an ultrasonic extraction for determination of neotame traces was
developed and optimized. After pre-treatment, river sediments (2 g) were extracted using
dichloromethane (3  5 cm3
) in an ultrasonic bath for 3  5 min. The obtained extracts were
analyzed by liquid chromatography with tandem mass spectrometry. The developed
method was applied to sediment samples from several rivers in Serbia – the Tisza, the
Morava, the Sava and the Danube. For the first time, data on the contamination level of
sediments in Serbia with artificial sweetener neotame (in the concentration range from 2
to 48 µg g
–1
) were obtained.",
publisher = "Beograd : Srpsko hemijsko društvo",
journal = "Kratki izvodi radova / 56. savetovanje Srpskog hemijskog društva , Niš 7. i 8. juni 2019",
title = "Određivanje veštačkog zaslađivača neotama u rečnim sedimentima, Determination of artificial sweetener neotame in river sediments",
pages = "11",
url = "https://hdl.handle.net/21.15107/rcub_technorep_5936"
}

Gvozdić, E. Ž., Matić Bujagić, I. V., Grujić, S. D.,& Đurkić, T. M.. (2019). Određivanje veštačkog zaslađivača neotama u rečnim sedimentima. in Kratki izvodi radova / 56. savetovanje Srpskog hemijskog društva , Niš 7. i 8. juni 2019
Beograd : Srpsko hemijsko društvo., 11.
https://hdl.handle.net/21.15107/rcub_technorep_5936

Gvozdić EŽ, Matić Bujagić IV, Grujić SD, Đurkić TM. Određivanje veštačkog zaslađivača neotama u rečnim sedimentima. in Kratki izvodi radova / 56. savetovanje Srpskog hemijskog društva , Niš 7. i 8. juni 2019. 2019;:11.
https://hdl.handle.net/21.15107/rcub_technorep_5936 .

Gvozdić, Eleonora Ž., Matić Bujagić, Ivana V., Grujić, Svetlana D., Đurkić, Tatjana M., "Određivanje veštačkog zaslađivača neotama u rečnim sedimentima" in Kratki izvodi radova / 56. savetovanje Srpskog hemijskog društva , Niš 7. i 8. juni 2019 (2019):11,
https://hdl.handle.net/21.15107/rcub_technorep_5936 .

TY  - CONF
AU  - Gvozdić, Eleonora Ž.
AU  - Matić Bujagić, Ivana V.
AU  - Đurkić, Tatjana M.
AU  - Grujić, Svetlana D.
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5937
AB  - Artificial sweeteners are used as sugar substitutes in food and beverages which are regulated by national guidelines on food additives (Regulation No. 53/2018)1. After decades of application, their widespread occurrence in environment has been confirmed2. Furthermore, artificial sweeteners are recognized as emerging pollutants due to their ecotoxicity and limited knowledge on environmental fate. Some sweeteners, as aspartame, possess a high sorption affinity and partition to sediment in the water-sediment system. 
In this paper, the presence of aspartame was investigated in sediments of four rivers in Serbia – the Tisza, the Morava, the Sava and the Danube. Analysis of sediment samples was performed by using an ultrasonic extraction as preparation method. The obtained extracts were analyzed by liquid chromatography with tandem mass spectrometry (LC–MS/MS). Aspartame was found in all investigated river sediments in the concentration range from 117 to 568 ng g–1. Data on the contamination levels of sediments in Serbia indicate potentially harmful effects of aspartame on benthic organisms.
PB  - Belgrade : Serbian Chemical Society
C3  - Book of abstracts / Seventh Conference of the Young Chemists of Serbia, Belgrade, 2nd November 2019
T1  - Traces of aspartame in river sediments
SP  - 64
UR  - https://hdl.handle.net/21.15107/rcub_technorep_5937
ER  - 

@conference{
author = "Gvozdić, Eleonora Ž. and Matić Bujagić, Ivana V. and Đurkić, Tatjana M. and Grujić, Svetlana D.",
year = "2019",
abstract = "Artificial sweeteners are used as sugar substitutes in food and beverages which are regulated by national guidelines on food additives (Regulation No. 53/2018)1. After decades of application, their widespread occurrence in environment has been confirmed2. Furthermore, artificial sweeteners are recognized as emerging pollutants due to their ecotoxicity and limited knowledge on environmental fate. Some sweeteners, as aspartame, possess a high sorption affinity and partition to sediment in the water-sediment system. 
In this paper, the presence of aspartame was investigated in sediments of four rivers in Serbia – the Tisza, the Morava, the Sava and the Danube. Analysis of sediment samples was performed by using an ultrasonic extraction as preparation method. The obtained extracts were analyzed by liquid chromatography with tandem mass spectrometry (LC–MS/MS). Aspartame was found in all investigated river sediments in the concentration range from 117 to 568 ng g–1. Data on the contamination levels of sediments in Serbia indicate potentially harmful effects of aspartame on benthic organisms.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Book of abstracts / Seventh Conference of the Young Chemists of Serbia, Belgrade, 2nd November 2019",
title = "Traces of aspartame in river sediments",
pages = "64",
url = "https://hdl.handle.net/21.15107/rcub_technorep_5937"
}

Gvozdić, E. Ž., Matić Bujagić, I. V., Đurkić, T. M.,& Grujić, S. D.. (2019). Traces of aspartame in river sediments. in Book of abstracts / Seventh Conference of the Young Chemists of Serbia, Belgrade, 2nd November 2019
Belgrade : Serbian Chemical Society., 64.
https://hdl.handle.net/21.15107/rcub_technorep_5937

Gvozdić EŽ, Matić Bujagić IV, Đurkić TM, Grujić SD. Traces of aspartame in river sediments. in Book of abstracts / Seventh Conference of the Young Chemists of Serbia, Belgrade, 2nd November 2019. 2019;:64.
https://hdl.handle.net/21.15107/rcub_technorep_5937 .

Gvozdić, Eleonora Ž., Matić Bujagić, Ivana V., Đurkić, Tatjana M., Grujić, Svetlana D., "Traces of aspartame in river sediments" in Book of abstracts / Seventh Conference of the Young Chemists of Serbia, Belgrade, 2nd November 2019 (2019):64,
https://hdl.handle.net/21.15107/rcub_technorep_5937 .

TY  - CONF
AU  - Prokić, Danijela
AU  - Mitrović, Angelina
AU  - Matić Bujagić, Ivana
AU  - Vukčević, Marija
AU  - Đurkić, Tatjana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6084
AB  - U ovom radu vršena je adsorpcija estrogenih hormona (estrona, 17β-estradiola i
17α-etinilestradiola) na različitim ugljeničnim materijalima, u cilju ispitivanja primenljivosti ovih
materijala za uklanjanje estrogenih hormona iz vode. Materijali korišćeni u eksperimentalnom delu
ovog rada bili su hemijski modifikovani i nemodifikovani karbon kriogel i ugljenične nanocevi, kao
i aktivirani i neaktivirani hidrotermalni ugljenik i aktivirane ugljenične tkanine. Hemijska
modifikacija materijala vršena je pomoću KOH, HNO3 ili HCl. Na osnovu eksperimentalnih
podataka ispitana je kinetika adsopcije, konstruisane su adsorpcione izoterme i upoređene sa
teorijskim modelima. Vršena je i desorpcija hormona, da bi se ispitala mogućnost regeneracije
adsorbenta. Koncentracija ispitivanih hormona u rastvoru nakon adsorpcije određena je metodom
tečne hromatografije - tandem masene spektrometrije. Karakterizacija površine ugljeničnih
materijala vršena je primenom BET metode, kao i određivanjem pH-vrednosti vodenih suspenzija
materijala, merenih nakon dostizanja ravnoteže (engl. pH slurry). Najveća efikasnost adsorpcije
postignuta je na nemodifikovanim ugljeničnim nanocevima, dok su u pogledu desorpcije najbolje
rezultate pokazale ugljenične nanocevi modifikovane sa KOH.
PB  - Beogradska politehnika
C3  - 5. naučno-stručni skup Politehnika
T1  - Adsorpcija estrogenih hormona iz vodenih rastvora na različitim ugljeničnim materijalima
EP  - 203
SP  - 198
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6084
ER  - 

@conference{
author = "Prokić, Danijela and Mitrović, Angelina and Matić Bujagić, Ivana and Vukčević, Marija and Đurkić, Tatjana",
year = "2019",
abstract = "U ovom radu vršena je adsorpcija estrogenih hormona (estrona, 17β-estradiola i
17α-etinilestradiola) na različitim ugljeničnim materijalima, u cilju ispitivanja primenljivosti ovih
materijala za uklanjanje estrogenih hormona iz vode. Materijali korišćeni u eksperimentalnom delu
ovog rada bili su hemijski modifikovani i nemodifikovani karbon kriogel i ugljenične nanocevi, kao
i aktivirani i neaktivirani hidrotermalni ugljenik i aktivirane ugljenične tkanine. Hemijska
modifikacija materijala vršena je pomoću KOH, HNO3 ili HCl. Na osnovu eksperimentalnih
podataka ispitana je kinetika adsopcije, konstruisane su adsorpcione izoterme i upoređene sa
teorijskim modelima. Vršena je i desorpcija hormona, da bi se ispitala mogućnost regeneracije
adsorbenta. Koncentracija ispitivanih hormona u rastvoru nakon adsorpcije određena je metodom
tečne hromatografije - tandem masene spektrometrije. Karakterizacija površine ugljeničnih
materijala vršena je primenom BET metode, kao i određivanjem pH-vrednosti vodenih suspenzija
materijala, merenih nakon dostizanja ravnoteže (engl. pH slurry). Najveća efikasnost adsorpcije
postignuta je na nemodifikovanim ugljeničnim nanocevima, dok su u pogledu desorpcije najbolje
rezultate pokazale ugljenične nanocevi modifikovane sa KOH.",
publisher = "Beogradska politehnika",
journal = "5. naučno-stručni skup Politehnika",
title = "Adsorpcija estrogenih hormona iz vodenih rastvora na različitim ugljeničnim materijalima",
pages = "203-198",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6084"
}

Prokić, D., Mitrović, A., Matić Bujagić, I., Vukčević, M.,& Đurkić, T.. (2019). Adsorpcija estrogenih hormona iz vodenih rastvora na različitim ugljeničnim materijalima. in 5. naučno-stručni skup Politehnika
Beogradska politehnika., 198-203.
https://hdl.handle.net/21.15107/rcub_technorep_6084

Prokić D, Mitrović A, Matić Bujagić I, Vukčević M, Đurkić T. Adsorpcija estrogenih hormona iz vodenih rastvora na različitim ugljeničnim materijalima. in 5. naučno-stručni skup Politehnika. 2019;:198-203.
https://hdl.handle.net/21.15107/rcub_technorep_6084 .

Prokić, Danijela, Mitrović, Angelina, Matić Bujagić, Ivana, Vukčević, Marija, Đurkić, Tatjana, "Adsorpcija estrogenih hormona iz vodenih rastvora na različitim ugljeničnim materijalima" in 5. naučno-stručni skup Politehnika (2019):198-203,
https://hdl.handle.net/21.15107/rcub_technorep_6084 .

TY  - JOUR
AU  - Jevremović, Nenad
AU  - Kalagasidis Krušić, Melina
AU  - Antanasijević, Davor
AU  - Popović, Ivanka
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4093
AB  - Nowadays, the extensive use of pesticides in crops production puts a significant challenge to minimize its side effects along with safe production, storage, and after-use treatment. This paper reports results related to the emission of certain pesticide formulations through the PET containers, as well as, their mitigation to the PET containers during their storage. The influence of storage time on cypermethrin migration to and through the PET was studied in short-term Collaborative International Pesticides Analytical Council test lasting up to 30 days. The PET containers were filled with pure xylene and pesticide formulations, where the amount of active substance, cypermethrin (CY), varied from 5 to 20 wt%, while the amount of emulsifier was kept constant. The results indicate that pesticide formulations diffuse to PET containers with an average increase of its initial mass up to 1.5%. The most intensive diffusion is in the first 24 months of storage, after its rate significantly decreases. It should be noted that the diffusion studied pesticide formulations are also very dependent on CY concentration. Besides the migration to the PET containers, it was also found that pesticide formulation was emitted through the PET containers in the first 17 to 24 months of storage depending on CY concentration. Emission rates were also dependent on CY concentration and were in the range of 15.3 to 38.0 mg/month center dot container. The emission through the PETcontainers was successfully predicted using artificial neural networks with R-2 = 0.94 and the mean absolute percentage error (MAPE) of only 6.2% on testing.
PB  - Springer Verlag
T2  - Environmental Science and Pollution Research
T1  - Migration of cypermethrin to and through the PET containers and artificial neural network-based estimation of its emission
EP  - 28939
IS  - 28
SP  - 28933
VL  - 26
DO  - 10.1007/s11356-019-06108-8
ER  - 

@article{
author = "Jevremović, Nenad and Kalagasidis Krušić, Melina and Antanasijević, Davor and Popović, Ivanka",
year = "2019",
abstract = "Nowadays, the extensive use of pesticides in crops production puts a significant challenge to minimize its side effects along with safe production, storage, and after-use treatment. This paper reports results related to the emission of certain pesticide formulations through the PET containers, as well as, their mitigation to the PET containers during their storage. The influence of storage time on cypermethrin migration to and through the PET was studied in short-term Collaborative International Pesticides Analytical Council test lasting up to 30 days. The PET containers were filled with pure xylene and pesticide formulations, where the amount of active substance, cypermethrin (CY), varied from 5 to 20 wt%, while the amount of emulsifier was kept constant. The results indicate that pesticide formulations diffuse to PET containers with an average increase of its initial mass up to 1.5%. The most intensive diffusion is in the first 24 months of storage, after its rate significantly decreases. It should be noted that the diffusion studied pesticide formulations are also very dependent on CY concentration. Besides the migration to the PET containers, it was also found that pesticide formulation was emitted through the PET containers in the first 17 to 24 months of storage depending on CY concentration. Emission rates were also dependent on CY concentration and were in the range of 15.3 to 38.0 mg/month center dot container. The emission through the PETcontainers was successfully predicted using artificial neural networks with R-2 = 0.94 and the mean absolute percentage error (MAPE) of only 6.2% on testing.",
publisher = "Springer Verlag",
journal = "Environmental Science and Pollution Research",
title = "Migration of cypermethrin to and through the PET containers and artificial neural network-based estimation of its emission",
pages = "28939-28933",
number = "28",
volume = "26",
doi = "10.1007/s11356-019-06108-8"
}

Jevremović, N., Kalagasidis Krušić, M., Antanasijević, D.,& Popović, I.. (2019). Migration of cypermethrin to and through the PET containers and artificial neural network-based estimation of its emission. in Environmental Science and Pollution Research
Springer Verlag., 26(28), 28933-28939.
https://doi.org/10.1007/s11356-019-06108-8

Jevremović N, Kalagasidis Krušić M, Antanasijević D, Popović I. Migration of cypermethrin to and through the PET containers and artificial neural network-based estimation of its emission. in Environmental Science and Pollution Research. 2019;26(28):28933-28939.
doi:10.1007/s11356-019-06108-8 .

Jevremović, Nenad, Kalagasidis Krušić, Melina, Antanasijević, Davor, Popović, Ivanka, "Migration of cypermethrin to and through the PET containers and artificial neural network-based estimation of its emission" in Environmental Science and Pollution Research, 26, no. 28 (2019):28933-28939,
https://doi.org/10.1007/s11356-019-06108-8 . .

TY  - JOUR
AU  - Mitrović, Tatjana
AU  - Antanasijević, Davor
AU  - Lazović, Saša
AU  - Perić-Grujić, Aleksandra
AU  - Ristić, Mirjana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4303
AB  - Rationalization of water quality monitoring stations nowadays is applied in many countries. In some cases, missing data from abandoned/inactive stations, spatial and temporal, could be very important, hence the use of artificial neural networks (ANNs) for virtual water quality monitoring at inactive monitoring sites was investigated. The aim was to develop single-output and simultaneous ANNs for the spatial interpolation of 18 water quality parameters at single- and multi-inactive monitoring sites on Danube River course through Serbia. Those different modeling approaches were considered in order to determine the most suitable combination of models. The variable selection and sensitivity analysis in the case of simultaneous models were performed using a modified procedure based on Monte Carlo Simulations (MCS). In general, the multi-target models tend to be more accurate than single target ones, while single output models outperform the simultaneous ones. Hence, for particular monitoring network and set of water quality parameters the optimal combination of models must be defined based on model's accuracy and computational effort needed. The MCS selection procedure has proved to be efficient only in the case of simultaneous multi-target model. MCS based analysis of input-output interactions has shown all significant interactions in the case of simultaneous single-target are grouped as a complex duster of interactions, where majority of inputs influence on several outputs. In the case multi-target model those interactions were portioned in five separate clusters, there majority of them mimic the input-output interactions that are present in single output models. The modeling strategy for study area was proposed on the basis of the performance of created models (mean average percentage error  lt  10%): simultaneous multi-target model for pH, alkalinity, conductivity, hardness, dissolved oxygen, HCO3-,SO42- and Ca, single-output multi-target models for temperature and Cl-, simultaneous single-target models for Mg and CO2, single output single target models for NO3-.
PB  - Elsevier Science Bv, Amsterdam
T2  - Science of the Total Environment
T1  - Virtual water quality monitoring at inactive monitoring sites using Monte Carlo optimized artificial neural networks: A case study of Danube River (Serbia)
EP  - 1009
SP  - 1000
VL  - 654
DO  - 10.1016/j.scitotenv.2018.11.189
ER  - 

@article{
author = "Mitrović, Tatjana and Antanasijević, Davor and Lazović, Saša and Perić-Grujić, Aleksandra and Ristić, Mirjana",
year = "2019",
abstract = "Rationalization of water quality monitoring stations nowadays is applied in many countries. In some cases, missing data from abandoned/inactive stations, spatial and temporal, could be very important, hence the use of artificial neural networks (ANNs) for virtual water quality monitoring at inactive monitoring sites was investigated. The aim was to develop single-output and simultaneous ANNs for the spatial interpolation of 18 water quality parameters at single- and multi-inactive monitoring sites on Danube River course through Serbia. Those different modeling approaches were considered in order to determine the most suitable combination of models. The variable selection and sensitivity analysis in the case of simultaneous models were performed using a modified procedure based on Monte Carlo Simulations (MCS). In general, the multi-target models tend to be more accurate than single target ones, while single output models outperform the simultaneous ones. Hence, for particular monitoring network and set of water quality parameters the optimal combination of models must be defined based on model's accuracy and computational effort needed. The MCS selection procedure has proved to be efficient only in the case of simultaneous multi-target model. MCS based analysis of input-output interactions has shown all significant interactions in the case of simultaneous single-target are grouped as a complex duster of interactions, where majority of inputs influence on several outputs. In the case multi-target model those interactions were portioned in five separate clusters, there majority of them mimic the input-output interactions that are present in single output models. The modeling strategy for study area was proposed on the basis of the performance of created models (mean average percentage error  lt  10%): simultaneous multi-target model for pH, alkalinity, conductivity, hardness, dissolved oxygen, HCO3-,SO42- and Ca, single-output multi-target models for temperature and Cl-, simultaneous single-target models for Mg and CO2, single output single target models for NO3-.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Science of the Total Environment",
title = "Virtual water quality monitoring at inactive monitoring sites using Monte Carlo optimized artificial neural networks: A case study of Danube River (Serbia)",
pages = "1009-1000",
volume = "654",
doi = "10.1016/j.scitotenv.2018.11.189"
}

Mitrović, T., Antanasijević, D., Lazović, S., Perić-Grujić, A.,& Ristić, M.. (2019). Virtual water quality monitoring at inactive monitoring sites using Monte Carlo optimized artificial neural networks: A case study of Danube River (Serbia). in Science of the Total Environment
Elsevier Science Bv, Amsterdam., 654, 1000-1009.
https://doi.org/10.1016/j.scitotenv.2018.11.189

Mitrović T, Antanasijević D, Lazović S, Perić-Grujić A, Ristić M. Virtual water quality monitoring at inactive monitoring sites using Monte Carlo optimized artificial neural networks: A case study of Danube River (Serbia). in Science of the Total Environment. 2019;654:1000-1009.
doi:10.1016/j.scitotenv.2018.11.189 .

Mitrović, Tatjana, Antanasijević, Davor, Lazović, Saša, Perić-Grujić, Aleksandra, Ristić, Mirjana, "Virtual water quality monitoring at inactive monitoring sites using Monte Carlo optimized artificial neural networks: A case study of Danube River (Serbia)" in Science of the Total Environment, 654 (2019):1000-1009,
https://doi.org/10.1016/j.scitotenv.2018.11.189 . .

TY  - JOUR
AU  - Radojević, Darinka
AU  - Antanasijević, Davor
AU  - Perić-Grujić, Aleksandra
AU  - Ristić, Mirjana
AU  - Pocajt, Viktor
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4315
AB  - In recent decades, artificial neural networks (ANNs) have been used for the prediction of concentration of air pollutants in urban areas. Beside meteorological variables, periodic parameters, such as hour of the day or month of the year, have been frequently used to improve the performance of ANN models by representing variations of emission sources. In this paper, different forms of periodic parameters, i.e. smoothed cosines based approximation and normalized historical mean values, were combined with meteorological variables in order to analyze the sensitivity of the ANN model to them. Ward neural network and general regression neural network were used and compared for the prediction of daily average concentrations of SO2 and NOx in Belgrade, Serbia. Multiple performance metrics have demonstrated that models based on periodic parameters outperform the corresponding models that used only meteorological variables as inputs. Also, a newly proposed normalized historical mean MOYnmv (month of the year) proved to be more appropriate in majority of cases than the traditional cosines based approximation (MOYcos). A simple rule for the selection of the most efficient MOY form was defined depending on their mutual correlation (r). Results have shown that if MOYnmv is correlated with MOYcos with r  gt  0.8, then ANN models what uses MOYnmv provide more accurate predictions.
PB  - Turkish Natl Committee Air Pollution Res & Control-Tuncap, Buca
T2  - Atmospheric Pollution Research
T1  - The significance of periodic parameters for ANN modeling of daily SO2 and NOx concentrations: A case study of Belgrade, Serbia
EP  - 628
IS  - 2
SP  - 621
VL  - 10
DO  - 10.1016/j.apr.2018.11.004
ER  - 

@article{
author = "Radojević, Darinka and Antanasijević, Davor and Perić-Grujić, Aleksandra and Ristić, Mirjana and Pocajt, Viktor",
year = "2019",
abstract = "In recent decades, artificial neural networks (ANNs) have been used for the prediction of concentration of air pollutants in urban areas. Beside meteorological variables, periodic parameters, such as hour of the day or month of the year, have been frequently used to improve the performance of ANN models by representing variations of emission sources. In this paper, different forms of periodic parameters, i.e. smoothed cosines based approximation and normalized historical mean values, were combined with meteorological variables in order to analyze the sensitivity of the ANN model to them. Ward neural network and general regression neural network were used and compared for the prediction of daily average concentrations of SO2 and NOx in Belgrade, Serbia. Multiple performance metrics have demonstrated that models based on periodic parameters outperform the corresponding models that used only meteorological variables as inputs. Also, a newly proposed normalized historical mean MOYnmv (month of the year) proved to be more appropriate in majority of cases than the traditional cosines based approximation (MOYcos). A simple rule for the selection of the most efficient MOY form was defined depending on their mutual correlation (r). Results have shown that if MOYnmv is correlated with MOYcos with r  gt  0.8, then ANN models what uses MOYnmv provide more accurate predictions.",
publisher = "Turkish Natl Committee Air Pollution Res & Control-Tuncap, Buca",
journal = "Atmospheric Pollution Research",
title = "The significance of periodic parameters for ANN modeling of daily SO2 and NOx concentrations: A case study of Belgrade, Serbia",
pages = "628-621",
number = "2",
volume = "10",
doi = "10.1016/j.apr.2018.11.004"
}

Radojević, D., Antanasijević, D., Perić-Grujić, A., Ristić, M.,& Pocajt, V.. (2019). The significance of periodic parameters for ANN modeling of daily SO2 and NOx concentrations: A case study of Belgrade, Serbia. in Atmospheric Pollution Research
Turkish Natl Committee Air Pollution Res & Control-Tuncap, Buca., 10(2), 621-628.
https://doi.org/10.1016/j.apr.2018.11.004

Radojević D, Antanasijević D, Perić-Grujić A, Ristić M, Pocajt V. The significance of periodic parameters for ANN modeling of daily SO2 and NOx concentrations: A case study of Belgrade, Serbia. in Atmospheric Pollution Research. 2019;10(2):621-628.
doi:10.1016/j.apr.2018.11.004 .

Radojević, Darinka, Antanasijević, Davor, Perić-Grujić, Aleksandra, Ristić, Mirjana, Pocajt, Viktor, "The significance of periodic parameters for ANN modeling of daily SO2 and NOx concentrations: A case study of Belgrade, Serbia" in Atmospheric Pollution Research, 10, no. 2 (2019):621-628,
https://doi.org/10.1016/j.apr.2018.11.004 . .

TY  - JOUR
AU  - Sekulić, Zoran
AU  - Antanasijević, Davor
AU  - Stevanović, Slavica
AU  - Trivunac, Katarina
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4323
AB  - Membrane filtration techniques are distinguished among methods for wastewater treatment and fully correspond to the requirements of the green concept of chemistry and production. The limiting factor for greater application of these methods is the phenomenon of fouling and the decline of the permeate flux. In this study, polynomial neural network based on group method data handling (GMDH) algorithm was applied to predict the performance of the complexation-microfiltration process for the removal of Pb(II), Zn(II), and Cd(II) from synthetic wastewater. The influence of working parameters such as pH, initial concentration of metal ions, type of complexing agent, and pressure on flux was experimentally determined. The data obtained were used as input parameters for the GMDH model as well as for the multiple linear regression (MLR) model. Root mean square error (RMSE), mean absolute error (MAE), and mean absolute percent error (MAPE) were used for evaluation purposes. Results showed that the developed model has excellent performance in flux prediction with R-2 of 0.9648.
PB  - Springer International Publishing Ag, Cham
T2  - Water Air and Soil Pollution
T1  - The Prediction of Heavy Metal Permeate Flux in Complexation-Microfiltration Process: Polynomial Neural Network Approach
IS  - 1
VL  - 230
DO  - 10.1007/s11270-018-4072-y
ER  - 

@article{
author = "Sekulić, Zoran and Antanasijević, Davor and Stevanović, Slavica and Trivunac, Katarina",
year = "2019",
abstract = "Membrane filtration techniques are distinguished among methods for wastewater treatment and fully correspond to the requirements of the green concept of chemistry and production. The limiting factor for greater application of these methods is the phenomenon of fouling and the decline of the permeate flux. In this study, polynomial neural network based on group method data handling (GMDH) algorithm was applied to predict the performance of the complexation-microfiltration process for the removal of Pb(II), Zn(II), and Cd(II) from synthetic wastewater. The influence of working parameters such as pH, initial concentration of metal ions, type of complexing agent, and pressure on flux was experimentally determined. The data obtained were used as input parameters for the GMDH model as well as for the multiple linear regression (MLR) model. Root mean square error (RMSE), mean absolute error (MAE), and mean absolute percent error (MAPE) were used for evaluation purposes. Results showed that the developed model has excellent performance in flux prediction with R-2 of 0.9648.",
publisher = "Springer International Publishing Ag, Cham",
journal = "Water Air and Soil Pollution",
title = "The Prediction of Heavy Metal Permeate Flux in Complexation-Microfiltration Process: Polynomial Neural Network Approach",
number = "1",
volume = "230",
doi = "10.1007/s11270-018-4072-y"
}

Sekulić, Z., Antanasijević, D., Stevanović, S.,& Trivunac, K.. (2019). The Prediction of Heavy Metal Permeate Flux in Complexation-Microfiltration Process: Polynomial Neural Network Approach. in Water Air and Soil Pollution
Springer International Publishing Ag, Cham., 230(1).
https://doi.org/10.1007/s11270-018-4072-y

Sekulić Z, Antanasijević D, Stevanović S, Trivunac K. The Prediction of Heavy Metal Permeate Flux in Complexation-Microfiltration Process: Polynomial Neural Network Approach. in Water Air and Soil Pollution. 2019;230(1).
doi:10.1007/s11270-018-4072-y .

Sekulić, Zoran, Antanasijević, Davor, Stevanović, Slavica, Trivunac, Katarina, "The Prediction of Heavy Metal Permeate Flux in Complexation-Microfiltration Process: Polynomial Neural Network Approach" in Water Air and Soil Pollution, 230, no. 1 (2019),
https://doi.org/10.1007/s11270-018-4072-y . .

TY  - JOUR
AU  - Antanasijević, Davor
AU  - Pocajt, Viktor
AU  - Perić-Grujić, Aleksandra
AU  - Ristić, Mirjana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4331
AB  - Urban population exposure to tropospheric ozone is a serious health concern in Europe countries. Although there are insufficient evidence to derive a level below which ozone has no effect on mortality WHO (World Health Organization) uses SOMO35 (sum of means over 35 ppb) in their health impact assessments. Is this paper, the artificial neural network (ANN) approach was used to forecast SOMO35 at the national level for a set of 24 European countries, mostly EU members. Available ozone precursors' emissions, population and climate data for the period 2003-2013 were used as inputs. Trend analysis had been performed using the linear regression of SOMO35 over time, and it has demonstrated that majority of the studied countries have a decreasing trend of SOMO35 values. The created models have made majority of predictions ( approximate to 60%) with satisfactory accuracy (relative error  lt 20%) on testing, while the best performing model had R-2 = 0.87 and overall relative error of 33.6%. The domain of applicability of the created models was analyzed using slope/mean ratio derivate from the trend analysis, which was successful in distinguishing countries with high from countries with low prediction errors. The overall relative error was reduced to  lt 14%, after the pool of countries was reduced based on the abovementioned criterion.
PB  - Elsevier Sci Ltd, Oxford
T2  - Environmental Pollution
T1  - Urban population exposure to tropospheric ozone: A multi-country forecasting of SOMO35 using artificial neural networks
EP  - 294
SP  - 288
VL  - 244
DO  - 10.1016/j.envpol.2018.10.051
ER  - 

@article{
author = "Antanasijević, Davor and Pocajt, Viktor and Perić-Grujić, Aleksandra and Ristić, Mirjana",
year = "2019",
abstract = "Urban population exposure to tropospheric ozone is a serious health concern in Europe countries. Although there are insufficient evidence to derive a level below which ozone has no effect on mortality WHO (World Health Organization) uses SOMO35 (sum of means over 35 ppb) in their health impact assessments. Is this paper, the artificial neural network (ANN) approach was used to forecast SOMO35 at the national level for a set of 24 European countries, mostly EU members. Available ozone precursors' emissions, population and climate data for the period 2003-2013 were used as inputs. Trend analysis had been performed using the linear regression of SOMO35 over time, and it has demonstrated that majority of the studied countries have a decreasing trend of SOMO35 values. The created models have made majority of predictions ( approximate to 60%) with satisfactory accuracy (relative error  lt 20%) on testing, while the best performing model had R-2 = 0.87 and overall relative error of 33.6%. The domain of applicability of the created models was analyzed using slope/mean ratio derivate from the trend analysis, which was successful in distinguishing countries with high from countries with low prediction errors. The overall relative error was reduced to  lt 14%, after the pool of countries was reduced based on the abovementioned criterion.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Environmental Pollution",
title = "Urban population exposure to tropospheric ozone: A multi-country forecasting of SOMO35 using artificial neural networks",
pages = "294-288",
volume = "244",
doi = "10.1016/j.envpol.2018.10.051"
}

Antanasijević, D., Pocajt, V., Perić-Grujić, A.,& Ristić, M.. (2019). Urban population exposure to tropospheric ozone: A multi-country forecasting of SOMO35 using artificial neural networks. in Environmental Pollution
Elsevier Sci Ltd, Oxford., 244, 288-294.
https://doi.org/10.1016/j.envpol.2018.10.051

Antanasijević D, Pocajt V, Perić-Grujić A, Ristić M. Urban population exposure to tropospheric ozone: A multi-country forecasting of SOMO35 using artificial neural networks. in Environmental Pollution. 2019;244:288-294.
doi:10.1016/j.envpol.2018.10.051 .

Antanasijević, Davor, Pocajt, Viktor, Perić-Grujić, Aleksandra, Ristić, Mirjana, "Urban population exposure to tropospheric ozone: A multi-country forecasting of SOMO35 using artificial neural networks" in Environmental Pollution, 244 (2019):288-294,
https://doi.org/10.1016/j.envpol.2018.10.051 . .

TY  - JOUR
AU  - Matić-Bujagić, Ivana
AU  - Grujić, Svetlana
AU  - Laušević, Mila
AU  - Hofmann, Thilo
AU  - Micić, Vesna
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4180
AB  - The Iron Gate I Reservoir is the largest impoundment on the Danube River. It retains  gt 50% of the incoming total suspended solids load and the associated organic contaminants. In the sediment core of the Iron Gate I Reservoir we report the presence and fate of four classes of emerging contaminants (pharmaceuticals, pesticides, steroids and perfluorinated compounds), predominantly not covered by the EU monitoring programs, but considered as future candidates. Based on contaminant's partitioning behavior in the water/sediment system and the suspected ecotoxicological potential asserted from the literature data, the risk of recorded concentrations for sediment-dwelling organisms was discussed. The high anticipated risk was associated with antibiotics sulfamethoxazole and erythromycin, and pesticides linuron and carbendazim (banned in the EU, but still approved for use in the investigated area) and malathion. This indicated the need for better control of release of these compounds into the river, and implied their inclusion in future regular monitoring. Higher concentrations of pharmaceuticals and most pesticides and sterols were recorded in the fragment of allochthonous coarser sediment, assumed to have entered the reservoir during a high discharge event. Only one perfluorinated compound was recorded in the upper part of the sediment core. The vertical concentration profiles of pesticides propazine and malathion indicated their uniform source, most likely atmospheric transport and deposition of particles deriving from agricultural land.
PB  - Elsevier, Amsterdam
T2  - Science of the Total Environment
T1  - Emerging contaminants in sediment core from the Iron Gate I Reservoir on the Danube River
EP  - 87
SP  - 77
VL  - 662
DO  - 10.1016/j.scitotenv.2019.01.205
ER  - 

@article{
author = "Matić-Bujagić, Ivana and Grujić, Svetlana and Laušević, Mila and Hofmann, Thilo and Micić, Vesna",
year = "2019",
abstract = "The Iron Gate I Reservoir is the largest impoundment on the Danube River. It retains  gt 50% of the incoming total suspended solids load and the associated organic contaminants. In the sediment core of the Iron Gate I Reservoir we report the presence and fate of four classes of emerging contaminants (pharmaceuticals, pesticides, steroids and perfluorinated compounds), predominantly not covered by the EU monitoring programs, but considered as future candidates. Based on contaminant's partitioning behavior in the water/sediment system and the suspected ecotoxicological potential asserted from the literature data, the risk of recorded concentrations for sediment-dwelling organisms was discussed. The high anticipated risk was associated with antibiotics sulfamethoxazole and erythromycin, and pesticides linuron and carbendazim (banned in the EU, but still approved for use in the investigated area) and malathion. This indicated the need for better control of release of these compounds into the river, and implied their inclusion in future regular monitoring. Higher concentrations of pharmaceuticals and most pesticides and sterols were recorded in the fragment of allochthonous coarser sediment, assumed to have entered the reservoir during a high discharge event. Only one perfluorinated compound was recorded in the upper part of the sediment core. The vertical concentration profiles of pesticides propazine and malathion indicated their uniform source, most likely atmospheric transport and deposition of particles deriving from agricultural land.",
publisher = "Elsevier, Amsterdam",
journal = "Science of the Total Environment",
title = "Emerging contaminants in sediment core from the Iron Gate I Reservoir on the Danube River",
pages = "87-77",
volume = "662",
doi = "10.1016/j.scitotenv.2019.01.205"
}

Matić-Bujagić, I., Grujić, S., Laušević, M., Hofmann, T.,& Micić, V.. (2019). Emerging contaminants in sediment core from the Iron Gate I Reservoir on the Danube River. in Science of the Total Environment
Elsevier, Amsterdam., 662, 77-87.
https://doi.org/10.1016/j.scitotenv.2019.01.205

Matić-Bujagić I, Grujić S, Laušević M, Hofmann T, Micić V. Emerging contaminants in sediment core from the Iron Gate I Reservoir on the Danube River. in Science of the Total Environment. 2019;662:77-87.
doi:10.1016/j.scitotenv.2019.01.205 .

Matić-Bujagić, Ivana, Grujić, Svetlana, Laušević, Mila, Hofmann, Thilo, Micić, Vesna, "Emerging contaminants in sediment core from the Iron Gate I Reservoir on the Danube River" in Science of the Total Environment, 662 (2019):77-87,
https://doi.org/10.1016/j.scitotenv.2019.01.205 . .

TY  - JOUR
AU  - Mladenović, Nataša N.
AU  - Ivanović, Marija M.
AU  - Kljajević, Ljiljana M.
AU  - Gulicovski, Jelena
AU  - Nenadović, Snežana S.
AU  - Trivunac, Katarina
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4298
AB  - Continuous development of new technologies leads to increasing pollution of water, thus creating the need for new materials that could be used in the processes of its purification. Therefore, adsorbents prepared from agricultural waste, resins, silica gels, zeolites, clays, flying ash, aluminosilicates and other materials are being investigated as potential sorbents. Recently, research has focused on improving the adsorption capacity by modifying the material by binding or impregnating inorganic and organic molecules on the surface. In this paper, the kaolinite modification with amino acids, histidine and cysteine, was performed to improve the efficiency of adsorption of cadmium ion. Cation exchange capacity (CEC) of raw and modified kaolinite was determined by titration with methylene blue. The influence of operating parameters, such as adsorption time, pH value of the solution, initial metal concentration and temperature, on the capacity and adsorption efficiency were examined. Better agreement of experimental results with Freundlich's adsorption isotherm and the pseudo-second order kinetics model suggest that the adsorption of cadmium ions on the investigated adsorbents takes place by chemisorption mechanism. The change of Gibbs free energy has a negative value for both adsorbents, which shows that the adsorption process is spontaneous. The efficacy of cadmium removal from the aqueous solution onto histidine-modified kaolinite increased from 78.6% to 91.8%.
AB  - Kontinualan razvoj novih tehnologija dovodi do povećanog zagađenja vode, čime se stvara potreba za novim materijalima koji se mogu koristiti u procesima prečišćavanja. Kao potencijalni, istražuju se adsorbenti pripremljeni od poljoprivrednog otpada, smola, silika gela, zeolita, gline, letećeg pepela, aluminosilikata i drugih materijala. Nedavna istraživanja su se fokusirala na poboljšanje adsorpcionog kapaciteta modifikovanjem materijala vezivanjem ili impregnacijom neorganskih i organskih molekula na površini. U ovom radu izvršena je modifikacija kaolinita aminokiselinama, histidinom i cisteinom, kako bi se poboljšala efikasnost adsorpcije jona kadmijuma. Kapacitet izmene katjona (CEC) sirovog i modifikovanog kaolinita određen je titracijom sa metilenskim plavim. Ispitivan je uticaj radnih parametara, kao što su vreme adsorpcije, pH vrednost rastvora, početna koncentracija metala, i temperatura, na kapacitet i efikasnost adsorpcije. Bolje slaganje eksperimentalnih rezultata sa Freundlich-ovom adsorpcionom izotermom i kinetičkim modelom pseudo-drugog reda sugeriše da se adsorpcija kadmijumovih jona na ispitivanim adsorbentima odvija putem hemisorpcionog mehanizma. Promena Gibsove slobodne energije ima negativnu vrednost za oba adsorbenta, što pokazuje da je proces adsorpcije spontan. Efikasnost uklanjanja kadmijuma iz vodenog rastvora na kaolinitu modifikovanim histidinom povećava se sa 78,6% na 91,8%.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Adsorption study of cadmium ions on kaolinite modified by histidine and cysteine
T1  - Adsorpcija kadmijumovih jona na kaolinitu modifikovanim histidinom i cisteinom
EP  - 22
IS  - 1
SP  - 15
VL  - 74
DO  - 10.5937/tehnika1901015M
ER  - 

@article{
author = "Mladenović, Nataša N. and Ivanović, Marija M. and Kljajević, Ljiljana M. and Gulicovski, Jelena and Nenadović, Snežana S. and Trivunac, Katarina",
year = "2019",
abstract = "Continuous development of new technologies leads to increasing pollution of water, thus creating the need for new materials that could be used in the processes of its purification. Therefore, adsorbents prepared from agricultural waste, resins, silica gels, zeolites, clays, flying ash, aluminosilicates and other materials are being investigated as potential sorbents. Recently, research has focused on improving the adsorption capacity by modifying the material by binding or impregnating inorganic and organic molecules on the surface. In this paper, the kaolinite modification with amino acids, histidine and cysteine, was performed to improve the efficiency of adsorption of cadmium ion. Cation exchange capacity (CEC) of raw and modified kaolinite was determined by titration with methylene blue. The influence of operating parameters, such as adsorption time, pH value of the solution, initial metal concentration and temperature, on the capacity and adsorption efficiency were examined. Better agreement of experimental results with Freundlich's adsorption isotherm and the pseudo-second order kinetics model suggest that the adsorption of cadmium ions on the investigated adsorbents takes place by chemisorption mechanism. The change of Gibbs free energy has a negative value for both adsorbents, which shows that the adsorption process is spontaneous. The efficacy of cadmium removal from the aqueous solution onto histidine-modified kaolinite increased from 78.6% to 91.8%., Kontinualan razvoj novih tehnologija dovodi do povećanog zagađenja vode, čime se stvara potreba za novim materijalima koji se mogu koristiti u procesima prečišćavanja. Kao potencijalni, istražuju se adsorbenti pripremljeni od poljoprivrednog otpada, smola, silika gela, zeolita, gline, letećeg pepela, aluminosilikata i drugih materijala. Nedavna istraživanja su se fokusirala na poboljšanje adsorpcionog kapaciteta modifikovanjem materijala vezivanjem ili impregnacijom neorganskih i organskih molekula na površini. U ovom radu izvršena je modifikacija kaolinita aminokiselinama, histidinom i cisteinom, kako bi se poboljšala efikasnost adsorpcije jona kadmijuma. Kapacitet izmene katjona (CEC) sirovog i modifikovanog kaolinita određen je titracijom sa metilenskim plavim. Ispitivan je uticaj radnih parametara, kao što su vreme adsorpcije, pH vrednost rastvora, početna koncentracija metala, i temperatura, na kapacitet i efikasnost adsorpcije. Bolje slaganje eksperimentalnih rezultata sa Freundlich-ovom adsorpcionom izotermom i kinetičkim modelom pseudo-drugog reda sugeriše da se adsorpcija kadmijumovih jona na ispitivanim adsorbentima odvija putem hemisorpcionog mehanizma. Promena Gibsove slobodne energije ima negativnu vrednost za oba adsorbenta, što pokazuje da je proces adsorpcije spontan. Efikasnost uklanjanja kadmijuma iz vodenog rastvora na kaolinitu modifikovanim histidinom povećava se sa 78,6% na 91,8%.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Adsorption study of cadmium ions on kaolinite modified by histidine and cysteine, Adsorpcija kadmijumovih jona na kaolinitu modifikovanim histidinom i cisteinom",
pages = "22-15",
number = "1",
volume = "74",
doi = "10.5937/tehnika1901015M"
}

Mladenović, N. N., Ivanović, M. M., Kljajević, L. M., Gulicovski, J., Nenadović, S. S.,& Trivunac, K.. (2019). Adsorption study of cadmium ions on kaolinite modified by histidine and cysteine. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 74(1), 15-22.
https://doi.org/10.5937/tehnika1901015M

Mladenović NN, Ivanović MM, Kljajević LM, Gulicovski J, Nenadović SS, Trivunac K. Adsorption study of cadmium ions on kaolinite modified by histidine and cysteine. in Tehnika. 2019;74(1):15-22.
doi:10.5937/tehnika1901015M .

Mladenović, Nataša N., Ivanović, Marija M., Kljajević, Ljiljana M., Gulicovski, Jelena, Nenadović, Snežana S., Trivunac, Katarina, "Adsorption study of cadmium ions on kaolinite modified by histidine and cysteine" in Tehnika, 74, no. 1 (2019):15-22,
https://doi.org/10.5937/tehnika1901015M . .