TY  - JOUR
AU  - Slavković Beškoski, Latinka
AU  - Ignjatović, Ljubiša
AU  - Ćujić, Mirjana
AU  - Vesković, Jelena
AU  - Trivunac, Katarina
AU  - Stojaković, Jelena
AU  - Perić-Grujić, Aleksandra
AU  - Onjia, Antonije
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7156
AB  - The occurrence and distribution of yttrium and rare earth elements (REYs), along with major elements and heavy metal(loid)s (HMs) in coal fly ash (CFA) from five coal-fired power plants (CFPPs), were analyzed, and the REY-associated ecological and health risks were assessed. The individual REYs in CFA were abundant in the following order: Ce > La > Nd > Y > Pr > Gd > Sm > Dy > Er > Yb > Eu > Ho > Tb > Tm > Lu. The total REY content ranged from 135 to 362 mg/kg, averaging 302 mg/kg. The mean light-to-heavy REY ratio was 4.1, indicating prevalent light REY enrichment in CFA. Significantly positive correlations between the REYs suggested that they coexist and share similar origins in CFA. REYs were estimated to pose low to moderate ecological risks, with risk index (RI) values ranging from 66 to 245. The hazard index (HI) and target cancer risk (TCR) of REYs from CFA, estimated to be higher for children (HIc = 0.15, TCRc = 8.4 × 10−16) than for adults (HIa = 0.017, TCRa = 3.6 × 10−16), were well below the safety limits (HI = 1, TCR = 1.0 × 10−6). However, the danger to human health posed by HMs in the same CFA samples (HIc = 5.74, TCRc = 2.6 × 10−4, TCRa = 1.1 × 10−4) exceeded the safe thresholds (excl. HIa = 0.63). The mean RI and HI attributed to REYs in CFA were 14% and 2.6%, respectively, of the total risks that include HMs.
PB  - MDPI
T2  - Toxics
T1  - Ecological and Health Risks Attributed to Rare Earth Elements in Coal Fly Ash
IS  - 1
SP  - 71
VL  - 12
DO  - 10.3390/toxics12010071
ER  - 

@article{
author = "Slavković Beškoski, Latinka and Ignjatović, Ljubiša and Ćujić, Mirjana and Vesković, Jelena and Trivunac, Katarina and Stojaković, Jelena and Perić-Grujić, Aleksandra and Onjia, Antonije",
year = "2024",
abstract = "The occurrence and distribution of yttrium and rare earth elements (REYs), along with major elements and heavy metal(loid)s (HMs) in coal fly ash (CFA) from five coal-fired power plants (CFPPs), were analyzed, and the REY-associated ecological and health risks were assessed. The individual REYs in CFA were abundant in the following order: Ce > La > Nd > Y > Pr > Gd > Sm > Dy > Er > Yb > Eu > Ho > Tb > Tm > Lu. The total REY content ranged from 135 to 362 mg/kg, averaging 302 mg/kg. The mean light-to-heavy REY ratio was 4.1, indicating prevalent light REY enrichment in CFA. Significantly positive correlations between the REYs suggested that they coexist and share similar origins in CFA. REYs were estimated to pose low to moderate ecological risks, with risk index (RI) values ranging from 66 to 245. The hazard index (HI) and target cancer risk (TCR) of REYs from CFA, estimated to be higher for children (HIc = 0.15, TCRc = 8.4 × 10−16) than for adults (HIa = 0.017, TCRa = 3.6 × 10−16), were well below the safety limits (HI = 1, TCR = 1.0 × 10−6). However, the danger to human health posed by HMs in the same CFA samples (HIc = 5.74, TCRc = 2.6 × 10−4, TCRa = 1.1 × 10−4) exceeded the safe thresholds (excl. HIa = 0.63). The mean RI and HI attributed to REYs in CFA were 14% and 2.6%, respectively, of the total risks that include HMs.",
publisher = "MDPI",
journal = "Toxics",
title = "Ecological and Health Risks Attributed to Rare Earth Elements in Coal Fly Ash",
number = "1",
pages = "71",
volume = "12",
doi = "10.3390/toxics12010071"
}

Slavković Beškoski, L., Ignjatović, L., Ćujić, M., Vesković, J., Trivunac, K., Stojaković, J., Perić-Grujić, A.,& Onjia, A.. (2024). Ecological and Health Risks Attributed to Rare Earth Elements in Coal Fly Ash. in Toxics
MDPI., 12(1), 71.
https://doi.org/10.3390/toxics12010071

Slavković Beškoski L, Ignjatović L, Ćujić M, Vesković J, Trivunac K, Stojaković J, Perić-Grujić A, Onjia A. Ecological and Health Risks Attributed to Rare Earth Elements in Coal Fly Ash. in Toxics. 2024;12(1):71.
doi:10.3390/toxics12010071 .

Slavković Beškoski, Latinka, Ignjatović, Ljubiša, Ćujić, Mirjana, Vesković, Jelena, Trivunac, Katarina, Stojaković, Jelena, Perić-Grujić, Aleksandra, Onjia, Antonije, "Ecological and Health Risks Attributed to Rare Earth Elements in Coal Fly Ash" in Toxics, 12, no. 1 (2024):71,
https://doi.org/10.3390/toxics12010071 . .

TY  - JOUR
AU  - Vesković, Jelena
AU  - Lučić, Milica
AU  - Ristić, Mirjana
AU  - Perić-Grujić, Aleksandra
AU  - Onjia, Antonije
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7158
AB  - This study investigated the occurrence and distribution of rare earth elements (REEs), including 14 lanthanoids, scandium (Sc), and yttrium (Y), in groundwater around a large coal-fired thermal power plant (TPP). The ICP-MS technique was used to analyze 16 REEs in groundwater samples collected from monitoring wells. REE concentrations ranged from 59.9 to 758 ng/L, with an average of 290 ng/L. The most abundant was Sc, followed by La, accounting for 54.2% and 21.4% of the total REE concentration, respectively. Geospatial analysis revealed the REE enrichment at several hotspots near the TPP. The highest REE concentrations were observed near the TPP and ash landfill, decreasing with the distance from the plant and the landfill. REE fractionation ratios and anomalies suggested the Light REE dominance, comprising over 78% of the total REEs. Correlation and principal component analyses indicated similar behavior and sources for most REEs. Health risk assessment found hazard indices (HI) of 1.36 × 10−3 and 1.98 × 10−3 for adults and children, respectively, which are far below the permissible limit (HI = 1). Likewise, incremental lifetime cancer risks (ILCR) were all below 1 × 10−6. Nevertheless, ongoing ash disposal and potential accumulation in the environment could elevate the REE exposure over time.
PB  - MDPI
T2  - Toxics
T1  - Spatial Variability of Rare Earth Elements in Groundwater in the Vicinity of a Coal-Fired Power Plant and Associated Health Risk
IS  - 1
SP  - 62
VL  - 12
DO  - 10.3390/toxics12010062
ER  - 

@article{
author = "Vesković, Jelena and Lučić, Milica and Ristić, Mirjana and Perić-Grujić, Aleksandra and Onjia, Antonije",
year = "2024",
abstract = "This study investigated the occurrence and distribution of rare earth elements (REEs), including 14 lanthanoids, scandium (Sc), and yttrium (Y), in groundwater around a large coal-fired thermal power plant (TPP). The ICP-MS technique was used to analyze 16 REEs in groundwater samples collected from monitoring wells. REE concentrations ranged from 59.9 to 758 ng/L, with an average of 290 ng/L. The most abundant was Sc, followed by La, accounting for 54.2% and 21.4% of the total REE concentration, respectively. Geospatial analysis revealed the REE enrichment at several hotspots near the TPP. The highest REE concentrations were observed near the TPP and ash landfill, decreasing with the distance from the plant and the landfill. REE fractionation ratios and anomalies suggested the Light REE dominance, comprising over 78% of the total REEs. Correlation and principal component analyses indicated similar behavior and sources for most REEs. Health risk assessment found hazard indices (HI) of 1.36 × 10−3 and 1.98 × 10−3 for adults and children, respectively, which are far below the permissible limit (HI = 1). Likewise, incremental lifetime cancer risks (ILCR) were all below 1 × 10−6. Nevertheless, ongoing ash disposal and potential accumulation in the environment could elevate the REE exposure over time.",
publisher = "MDPI",
journal = "Toxics",
title = "Spatial Variability of Rare Earth Elements in Groundwater in the Vicinity of a Coal-Fired Power Plant and Associated Health Risk",
number = "1",
pages = "62",
volume = "12",
doi = "10.3390/toxics12010062"
}

Vesković, J., Lučić, M., Ristić, M., Perić-Grujić, A.,& Onjia, A.. (2024). Spatial Variability of Rare Earth Elements in Groundwater in the Vicinity of a Coal-Fired Power Plant and Associated Health Risk. in Toxics
MDPI., 12(1), 62.
https://doi.org/10.3390/toxics12010062

Vesković J, Lučić M, Ristić M, Perić-Grujić A, Onjia A. Spatial Variability of Rare Earth Elements in Groundwater in the Vicinity of a Coal-Fired Power Plant and Associated Health Risk. in Toxics. 2024;12(1):62.
doi:10.3390/toxics12010062 .

Vesković, Jelena, Lučić, Milica, Ristić, Mirjana, Perić-Grujić, Aleksandra, Onjia, Antonije, "Spatial Variability of Rare Earth Elements in Groundwater in the Vicinity of a Coal-Fired Power Plant and Associated Health Risk" in Toxics, 12, no. 1 (2024):62,
https://doi.org/10.3390/toxics12010062 . .

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

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

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

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

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

TY  - JOUR
AU  - Karić, Nataša
AU  - Vukčević, Marija
AU  - Maletić, Marina
AU  - Dimitrijević, Silvana
AU  - Ristić, Mirjana
AU  - Perić-Grujić, Aleksandra
AU  - Trivunac, Katarina
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6359
AB  - In this study, an environmentally sustainable process of crystal violet, congo red, methylene
blue, brilliant green, Pb2+, Cd2+, and Zn2+ ions adsorption from aqueous solutions onto aminomodified starch derivatives was investigated. The degree of substitution, elemental analysis,
swelling capacity, solubility, and FTIR, XRD, and SEM techniques were used to characterize
the adsorbents. The influence of pH, contact time, temperature, and initial concentration has
been studied to optimize the adsorption conditions. The amino-modified starch was the most
effective in removing crystal violet (CV) (65.31-80.46%) and Pb2+ (67.44-80.33%) within the
optimal adsorption conditions (pH 5, 10 mg dm-3, 25 oC, 180 min). The adsorption of CV could be described by both Langmuir and Freundlich adsorption isotherms, while the
adsorption of Pb2+ ions was better described by the Langmuir isotherm. The pseudo-second
order model can be used to describe the adsorption kinetics of CV and Pb2+ on all tested
samples. The thermodynamic study indicated that the adsorption of CV was exothermic,
while the Pb2+ adsorption was endothermic. The simultaneous removal of CV and Pb2+ from
the binary mixture has shown their competitive behavior. Thus, the amino-modified starch is
a promising eco-friendly adsorbent for the removal of dyes and heavy metals from polluted
water.
T2  - International Journal of Biological Macromolecules
T1  - Physico-chemical, structural, and adsorption properties of amino-modified starch derivatives for the removal of (in)organic pollutants from aqueous solutions
SP  - 124527
VL  - 241
DO  - 10.1016/j.ijbiomac.2023.124527
ER  - 

@article{
author = "Karić, Nataša and Vukčević, Marija and Maletić, Marina and Dimitrijević, Silvana and Ristić, Mirjana and Perić-Grujić, Aleksandra and Trivunac, Katarina",
year = "2023",
abstract = "In this study, an environmentally sustainable process of crystal violet, congo red, methylene
blue, brilliant green, Pb2+, Cd2+, and Zn2+ ions adsorption from aqueous solutions onto aminomodified starch derivatives was investigated. The degree of substitution, elemental analysis,
swelling capacity, solubility, and FTIR, XRD, and SEM techniques were used to characterize
the adsorbents. The influence of pH, contact time, temperature, and initial concentration has
been studied to optimize the adsorption conditions. The amino-modified starch was the most
effective in removing crystal violet (CV) (65.31-80.46%) and Pb2+ (67.44-80.33%) within the
optimal adsorption conditions (pH 5, 10 mg dm-3, 25 oC, 180 min). The adsorption of CV could be described by both Langmuir and Freundlich adsorption isotherms, while the
adsorption of Pb2+ ions was better described by the Langmuir isotherm. The pseudo-second
order model can be used to describe the adsorption kinetics of CV and Pb2+ on all tested
samples. The thermodynamic study indicated that the adsorption of CV was exothermic,
while the Pb2+ adsorption was endothermic. The simultaneous removal of CV and Pb2+ from
the binary mixture has shown their competitive behavior. Thus, the amino-modified starch is
a promising eco-friendly adsorbent for the removal of dyes and heavy metals from polluted
water.",
journal = "International Journal of Biological Macromolecules",
title = "Physico-chemical, structural, and adsorption properties of amino-modified starch derivatives for the removal of (in)organic pollutants from aqueous solutions",
pages = "124527",
volume = "241",
doi = "10.1016/j.ijbiomac.2023.124527"
}

Karić, N., Vukčević, M., Maletić, M., Dimitrijević, S., Ristić, M., Perić-Grujić, A.,& Trivunac, K.. (2023). Physico-chemical, structural, and adsorption properties of amino-modified starch derivatives for the removal of (in)organic pollutants from aqueous solutions. in International Journal of Biological Macromolecules, 241, 124527.
https://doi.org/10.1016/j.ijbiomac.2023.124527

Karić N, Vukčević M, Maletić M, Dimitrijević S, Ristić M, Perić-Grujić A, Trivunac K. Physico-chemical, structural, and adsorption properties of amino-modified starch derivatives for the removal of (in)organic pollutants from aqueous solutions. in International Journal of Biological Macromolecules. 2023;241:124527.
doi:10.1016/j.ijbiomac.2023.124527 .

Karić, Nataša, Vukčević, Marija, Maletić, Marina, Dimitrijević, Silvana, Ristić, Mirjana, Perić-Grujić, Aleksandra, Trivunac, Katarina, "Physico-chemical, structural, and adsorption properties of amino-modified starch derivatives for the removal of (in)organic pollutants from aqueous solutions" in International Journal of Biological Macromolecules, 241 (2023):124527,
https://doi.org/10.1016/j.ijbiomac.2023.124527 . .

TY  - JOUR
AU  - Trivunac, Katarina
AU  - Vukčević, Marija
AU  - Maletić, Marina
AU  - Karić, Nataša
AU  - Pejić, Biljana
AU  - Perić-Grujić, Aleksandra
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6379
AB  - This study aims to investigate the effect of alkalization and chemical coupling methods on the surface
and adsorption properties of waste cotton and cotton/polyester yarns. The simple and cheap alkali treatment was
performed using 10% and 18% NaOH solution, while the chemical coupling method involved combining cotton
and cotton/polyester yarns and fly ash, using sodium carboxymethyl cellulose and sodium alginate as binders.
Morphological and surface characteristics of unmodified and modified cotton and cotton/polyester yarns were
analyzed by scanning electron microscopy and Fourier transform infrared spectroscopy, while adsorption properties were assessed by the removal of lead and cadmium ions from aqueous solution. It was found that chemical
modification with 18% NaOH solution positively affected the adsorption properties of only cotton yarns, increasing the removal efficiency of lead ions up to 75%. On the other hand, modification with fly ash improves the adsorption properties of both, cotton and cotton/polyester yarns, increasing the efficiency in removing lead ions by
using sodium carboxymethyl cellulose, and cadmium ions by using alginate as a binder. Using the chemical coupling method, effective adsorbents are obtained starting from waste yarn, which gives it added value, the amount
of non-degradable waste material can be reduced and the criteria of a cleaner environment and circular economy
can be met.
PB  - SAVEZ INŽENJERA I TEHNIČARA TEKSTILACA SRBIJE
T2  - Tekstilna industrija
T1  - WASTE MATERIALS AS ADSORBENTS FOR HEAVY METALS REMOVAL FROM WATER: COMPARATIVE ANALYSIS OF MODIFICATION TECHNIQUES
EP  - 10
IS  - 1
SP  - 4
VL  - 71
DO  - 10.5937/TEKSTIND2301004T
ER  - 

@article{
author = "Trivunac, Katarina and Vukčević, Marija and Maletić, Marina and Karić, Nataša and Pejić, Biljana and Perić-Grujić, Aleksandra",
year = "2023",
abstract = "This study aims to investigate the effect of alkalization and chemical coupling methods on the surface
and adsorption properties of waste cotton and cotton/polyester yarns. The simple and cheap alkali treatment was
performed using 10% and 18% NaOH solution, while the chemical coupling method involved combining cotton
and cotton/polyester yarns and fly ash, using sodium carboxymethyl cellulose and sodium alginate as binders.
Morphological and surface characteristics of unmodified and modified cotton and cotton/polyester yarns were
analyzed by scanning electron microscopy and Fourier transform infrared spectroscopy, while adsorption properties were assessed by the removal of lead and cadmium ions from aqueous solution. It was found that chemical
modification with 18% NaOH solution positively affected the adsorption properties of only cotton yarns, increasing the removal efficiency of lead ions up to 75%. On the other hand, modification with fly ash improves the adsorption properties of both, cotton and cotton/polyester yarns, increasing the efficiency in removing lead ions by
using sodium carboxymethyl cellulose, and cadmium ions by using alginate as a binder. Using the chemical coupling method, effective adsorbents are obtained starting from waste yarn, which gives it added value, the amount
of non-degradable waste material can be reduced and the criteria of a cleaner environment and circular economy
can be met.",
publisher = "SAVEZ INŽENJERA I TEHNIČARA TEKSTILACA SRBIJE",
journal = "Tekstilna industrija",
title = "WASTE MATERIALS AS ADSORBENTS FOR HEAVY METALS REMOVAL FROM WATER: COMPARATIVE ANALYSIS OF MODIFICATION TECHNIQUES",
pages = "10-4",
number = "1",
volume = "71",
doi = "10.5937/TEKSTIND2301004T"
}

Trivunac, K., Vukčević, M., Maletić, M., Karić, N., Pejić, B.,& Perić-Grujić, A.. (2023). WASTE MATERIALS AS ADSORBENTS FOR HEAVY METALS REMOVAL FROM WATER: COMPARATIVE ANALYSIS OF MODIFICATION TECHNIQUES. in Tekstilna industrija
SAVEZ INŽENJERA I TEHNIČARA TEKSTILACA SRBIJE., 71(1), 4-10.
https://doi.org/10.5937/TEKSTIND2301004T

Trivunac K, Vukčević M, Maletić M, Karić N, Pejić B, Perić-Grujić A. WASTE MATERIALS AS ADSORBENTS FOR HEAVY METALS REMOVAL FROM WATER: COMPARATIVE ANALYSIS OF MODIFICATION TECHNIQUES. in Tekstilna industrija. 2023;71(1):4-10.
doi:10.5937/TEKSTIND2301004T .

Trivunac, Katarina, Vukčević, Marija, Maletić, Marina, Karić, Nataša, Pejić, Biljana, Perić-Grujić, Aleksandra, "WASTE MATERIALS AS ADSORBENTS FOR HEAVY METALS REMOVAL FROM WATER: COMPARATIVE ANALYSIS OF MODIFICATION TECHNIQUES" in Tekstilna industrija, 71, no. 1 (2023):4-10,
https://doi.org/10.5937/TEKSTIND2301004T . .

TY  - JOUR
AU  - Vukčević, Marija
AU  - Maletić, Marina
AU  - Pejić, Biljana
AU  - Karić, Nataša
AU  - Trivunac, Katarina
AU  - Perić-Grujić, Aleksandra
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6380
AB  - Waste hemp and flax fibers, and cotton and cotton/polyester yarns,
available in large quantities from the textile industry, were used as cheap and
effective sorbents for the removal of methylene blue from wastewater. Waste
fibers and yarns were characterized by scanning electron microscopy, Fourier
transform infrared spectroscopy, iodine sorption, water retention, and point of
zero charge, as well as through the determination of crystallinity index and
degree of surface crystallinity. Adsorption of methylene blue was optimized by
examining the influence of contact time, initial concentration, temperature, and
pH value. It was found that the more ordered structure of cotton and
cotton/polyester yarns leads to lower adsorption capacities and better agreement
with pseudo-second order kinetic and Langmuir isotherm model, while the more
heterogeneous structure of flax and hemp fibers show higher capacities for
methylene blue adsorption, better described by the pseudo-first order kinetic and
Freundlich isotherm model. Based on the obtained results, waste lignocellulosic
fibers and yarns can be utilized for the discoloration of wastewater, thereby
solving the problem of waste generated in the textile industry.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Waste hemp and flax fibers and cotton and cotton/polyester yarns for removal of methylene blue from wastewater: Comparative study of adsorption properties
DO  - 10.2298/JSC221213015V
ER  - 

@article{
author = "Vukčević, Marija and Maletić, Marina and Pejić, Biljana and Karić, Nataša and Trivunac, Katarina and Perić-Grujić, Aleksandra",
year = "2023",
abstract = "Waste hemp and flax fibers, and cotton and cotton/polyester yarns,
available in large quantities from the textile industry, were used as cheap and
effective sorbents for the removal of methylene blue from wastewater. Waste
fibers and yarns were characterized by scanning electron microscopy, Fourier
transform infrared spectroscopy, iodine sorption, water retention, and point of
zero charge, as well as through the determination of crystallinity index and
degree of surface crystallinity. Adsorption of methylene blue was optimized by
examining the influence of contact time, initial concentration, temperature, and
pH value. It was found that the more ordered structure of cotton and
cotton/polyester yarns leads to lower adsorption capacities and better agreement
with pseudo-second order kinetic and Langmuir isotherm model, while the more
heterogeneous structure of flax and hemp fibers show higher capacities for
methylene blue adsorption, better described by the pseudo-first order kinetic and
Freundlich isotherm model. Based on the obtained results, waste lignocellulosic
fibers and yarns can be utilized for the discoloration of wastewater, thereby
solving the problem of waste generated in the textile industry.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Waste hemp and flax fibers and cotton and cotton/polyester yarns for removal of methylene blue from wastewater: Comparative study of adsorption properties",
doi = "10.2298/JSC221213015V"
}

Vukčević, M., Maletić, M., Pejić, B., Karić, N., Trivunac, K.,& Perić-Grujić, A.. (2023). Waste hemp and flax fibers and cotton and cotton/polyester yarns for removal of methylene blue from wastewater: Comparative study of adsorption properties. in Journal of the Serbian Chemical Society
Serbian Chemical Society..
https://doi.org/10.2298/JSC221213015V

Vukčević M, Maletić M, Pejić B, Karić N, Trivunac K, Perić-Grujić A. Waste hemp and flax fibers and cotton and cotton/polyester yarns for removal of methylene blue from wastewater: Comparative study of adsorption properties. in Journal of the Serbian Chemical Society. 2023;.
doi:10.2298/JSC221213015V .

Vukčević, Marija, Maletić, Marina, Pejić, Biljana, Karić, Nataša, Trivunac, Katarina, Perić-Grujić, Aleksandra, "Waste hemp and flax fibers and cotton and cotton/polyester yarns for removal of methylene blue from wastewater: Comparative study of adsorption properties" in Journal of the Serbian Chemical Society (2023),
https://doi.org/10.2298/JSC221213015V . .

TY  - JOUR
AU  - Vukčević, Marija M.
AU  - Maletić, Marina M.
AU  - Pejić, Biljana M.
AU  - Karić, Nataša V.
AU  - Trivunac, Katarina V.
AU  - Perić-Grujić, Aleksandra A.
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6586
AB  - Waste hemp and flax fibers, and cotton and cotton/polyester yarns, available in large quantities from the textile industry, were used as cheap and effective sorbents for the removal of methylene blue from wastewater. Waste fibers and yarns were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, iodine sorption, water retention, and point of zero charge, as well as through the determination of crystallinity index and degree of surface crystallinity. The adsorption of methylene blue was optimized by examining the influence of contact time, initial concentration, temperature, and pH value. It was found that the more ordered structure of cotton and cotton/polyester yarns leads to lower adsorption capacities and better agreement with pseudo-second order kinetic and Langmuir isotherm model, while the more heterogeneous structure of flax and hemp fibers shows higher capacities for methylene blue adsorption, better described by the pseudo-first order kinetic and Freundlich isotherm model. Based on the obtained results, waste lignocellulosic fibers and yarns can be used for the discoloration of wastewater, thereby solving the problem of waste generated in the textile industry.
AB  - Отпадна влакна конопље и лана и пређе памука и памук/полиестра, добијена као
отпад из текстилне индустрије, коришћена су као јефтини и ефикасни сорбенти за уклањање метиленског плавог из отпадних вода. Узорци влакана и пређе су окарактерисани
скенирајућом електронском микроскопијом, инфрацрвеном спектроскопијом са Фуријеовом трансформацијом, сорпцијом јода, задржавањем воде, тачком нултог наелектрисања, као и одређивањем индекса кристаличности и степена површинске кристаличности. У циљу оптимизације адсорпције метиленско плавог испитан је утицај времена
контакта, почетне концентрације, температуре и pH вредности на ефикасност адсорпције. Показано је да пређа памука и памук/полиестера са већим уделом кристалних
области у структури има нижи адсорпциони капацитет и боље се слаже са кинетичким
моделом псеудо-другог реда и Лангмировом адсорпционом изотермом. С друге стране,
влакна лана и конопље се одликују већим уделом аморфних области и нецелулозних
компоненти у структури и показују већи капацитет адсорпције и боље слагање са кинетичким моделом псеудо-првог реда као и са Фројндлиховом адсорпционом изотермом.
На основу добијених резултата показано је да се отпадна лигноцелулозна влакна и пређа
могу користити за обезбојавање отпадних вода, чиме се решава проблем отпада који
настаје у текстилној индустрији и задовољавају све строжији захтеви у области заштите
животне средине.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Waste hemp and flax fibers and cotton and cotton/polyester yarns for removal of methylene blue from wastewater: Comparative study of adsorption properties
T1  - ОТПАДНА ВЛАКНА КОНОПЉЕ И ЛАНА И ПРЕЂЕ ПАМУКА И ПАМУК/ПОЛИЕСТЕРА
ЗА УКЛАЊАЊЕ МЕТИЛЕНСКО ПЛАВОГ ИЗ ОТПАДНЕ ВОДЕ: УПОРЕДНА АНАЛИЗА
АДСОРПЦИОНИХ КАРАКТЕРИСТИКА
EP  - 683
IS  - 6
SP  - 669
VL  - 88
DO  - 10.2298/JSC221213015V
ER  - 

@article{
author = "Vukčević, Marija M. and Maletić, Marina M. and Pejić, Biljana M. and Karić, Nataša V. and Trivunac, Katarina V. and Perić-Grujić, Aleksandra A.",
year = "2023",
abstract = "Waste hemp and flax fibers, and cotton and cotton/polyester yarns, available in large quantities from the textile industry, were used as cheap and effective sorbents for the removal of methylene blue from wastewater. Waste fibers and yarns were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, iodine sorption, water retention, and point of zero charge, as well as through the determination of crystallinity index and degree of surface crystallinity. The adsorption of methylene blue was optimized by examining the influence of contact time, initial concentration, temperature, and pH value. It was found that the more ordered structure of cotton and cotton/polyester yarns leads to lower adsorption capacities and better agreement with pseudo-second order kinetic and Langmuir isotherm model, while the more heterogeneous structure of flax and hemp fibers shows higher capacities for methylene blue adsorption, better described by the pseudo-first order kinetic and Freundlich isotherm model. Based on the obtained results, waste lignocellulosic fibers and yarns can be used for the discoloration of wastewater, thereby solving the problem of waste generated in the textile industry., Отпадна влакна конопље и лана и пређе памука и памук/полиестра, добијена као
отпад из текстилне индустрије, коришћена су као јефтини и ефикасни сорбенти за уклањање метиленског плавог из отпадних вода. Узорци влакана и пређе су окарактерисани
скенирајућом електронском микроскопијом, инфрацрвеном спектроскопијом са Фуријеовом трансформацијом, сорпцијом јода, задржавањем воде, тачком нултог наелектрисања, као и одређивањем индекса кристаличности и степена површинске кристаличности. У циљу оптимизације адсорпције метиленско плавог испитан је утицај времена
контакта, почетне концентрације, температуре и pH вредности на ефикасност адсорпције. Показано је да пређа памука и памук/полиестера са већим уделом кристалних
области у структури има нижи адсорпциони капацитет и боље се слаже са кинетичким
моделом псеудо-другог реда и Лангмировом адсорпционом изотермом. С друге стране,
влакна лана и конопље се одликују већим уделом аморфних области и нецелулозних
компоненти у структури и показују већи капацитет адсорпције и боље слагање са кинетичким моделом псеудо-првог реда као и са Фројндлиховом адсорпционом изотермом.
На основу добијених резултата показано је да се отпадна лигноцелулозна влакна и пређа
могу користити за обезбојавање отпадних вода, чиме се решава проблем отпада који
настаје у текстилној индустрији и задовољавају све строжији захтеви у области заштите
животне средине.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Waste hemp and flax fibers and cotton and cotton/polyester yarns for removal of methylene blue from wastewater: Comparative study of adsorption properties, ОТПАДНА ВЛАКНА КОНОПЉЕ И ЛАНА И ПРЕЂЕ ПАМУКА И ПАМУК/ПОЛИЕСТЕРА
ЗА УКЛАЊАЊЕ МЕТИЛЕНСКО ПЛАВОГ ИЗ ОТПАДНЕ ВОДЕ: УПОРЕДНА АНАЛИЗА
АДСОРПЦИОНИХ КАРАКТЕРИСТИКА",
pages = "683-669",
number = "6",
volume = "88",
doi = "10.2298/JSC221213015V"
}

Vukčević, M. M., Maletić, M. M., Pejić, B. M., Karić, N. V., Trivunac, K. V.,& Perić-Grujić, A. A.. (2023). Waste hemp and flax fibers and cotton and cotton/polyester yarns for removal of methylene blue from wastewater: Comparative study of adsorption properties. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 88(6), 669-683.
https://doi.org/10.2298/JSC221213015V

Vukčević MM, Maletić MM, Pejić BM, Karić NV, Trivunac KV, Perić-Grujić AA. Waste hemp and flax fibers and cotton and cotton/polyester yarns for removal of methylene blue from wastewater: Comparative study of adsorption properties. in Journal of the Serbian Chemical Society. 2023;88(6):669-683.
doi:10.2298/JSC221213015V .

Vukčević, Marija M., Maletić, Marina M., Pejić, Biljana M., Karić, Nataša V., Trivunac, Katarina V., Perić-Grujić, Aleksandra A., "Waste hemp and flax fibers and cotton and cotton/polyester yarns for removal of methylene blue from wastewater: Comparative study of adsorption properties" in Journal of the Serbian Chemical Society, 88, no. 6 (2023):669-683,
https://doi.org/10.2298/JSC221213015V . .

TY  - CONF
AU  - Maletić, Marina
AU  - Žižović, Sara
AU  - Vukčević, Marija
AU  - Milošević, Milena
AU  - Karić, Nataša
AU  - Trivunac, Katarina
AU  - Perić-Grujić, Aleksandra
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6603
AB  - U cilju iskorišćenja industrijskog otpada, leteći pepeo je modifikovan radi dobijanja
efikasnih adsorbenata za uklanjanje metilensko plavog iz vode. Leteći pepeo je aktiviran u
prisustvu NaOH na 550oC, i modifikovan različitim količinama polietilenimina.
Karakterizacija polaznog i modifikovanih uzoraka izvršena je skenirajućom elektronskom
mikroskopijom i infracrvenom spektroskopijom sa Furijeovom transformacijom. Ispitan je
uticaj vremena kontakta i početne koncentracije adsorbata na adsorpcione kapacitete
nemodifikovanog i modifikovanog letećeg pepela. Pokazano je da adsorpcione
karakteristike zavise od količine dodatog polietilenimina, kao i da adsorpcija prati brzinu
pseudo-drugog reda, a ravnotežni adsorpcioni podaci pokazuju bolje slaganje sa Frojndlihovom izotermom.
AB  - In attempt to reuse industrial waste, fly ash was modified and converted into efficient
adsorbent for the removal of methylene blue from water. Fly ash was activated in the
presence of NaOH at 550oC, and modified with different amounts of polyethyleneimine.
The raw and modified samples were characterized by scanning electron microscopy and
Fourier transform infrared spectroscopy. The influence of contact time and initial
adsorbate concentration on the adsorption capacity of unmodified and modified fly ash was
also examined. It has been shown that the adsorption characteristics depend on the amount
of polyethyleneimine added, that the adsorption follows a pseudo-second-order rate, and
the equilibrium adsorption data show better agreement with the Freundlich isotherm.
PB  - Beograd : Srpsko hemijsko društvo
C3  - Kratki izvodi radova ; Knjiga radova / 59. savetovanje Srpskog hemijskog društva, Novi Sad 1. i 2. jun 2023. godine
T1  - Alkalno aktivirani leteći pepeo modifikovan polietileniminom kao adsorbent za uklanjanje metilensko plavog iz vode
T1  - Alkali-activated fly ash modified with polyethyleneimine as adsorbent for methylene blue removal from water
SP  - 126
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6603
ER  - 

@conference{
author = "Maletić, Marina and Žižović, Sara and Vukčević, Marija and Milošević, Milena and Karić, Nataša and Trivunac, Katarina and Perić-Grujić, Aleksandra",
year = "2023",
abstract = "U cilju iskorišćenja industrijskog otpada, leteći pepeo je modifikovan radi dobijanja
efikasnih adsorbenata za uklanjanje metilensko plavog iz vode. Leteći pepeo je aktiviran u
prisustvu NaOH na 550oC, i modifikovan različitim količinama polietilenimina.
Karakterizacija polaznog i modifikovanih uzoraka izvršena je skenirajućom elektronskom
mikroskopijom i infracrvenom spektroskopijom sa Furijeovom transformacijom. Ispitan je
uticaj vremena kontakta i početne koncentracije adsorbata na adsorpcione kapacitete
nemodifikovanog i modifikovanog letećeg pepela. Pokazano je da adsorpcione
karakteristike zavise od količine dodatog polietilenimina, kao i da adsorpcija prati brzinu
pseudo-drugog reda, a ravnotežni adsorpcioni podaci pokazuju bolje slaganje sa Frojndlihovom izotermom., In attempt to reuse industrial waste, fly ash was modified and converted into efficient
adsorbent for the removal of methylene blue from water. Fly ash was activated in the
presence of NaOH at 550oC, and modified with different amounts of polyethyleneimine.
The raw and modified samples were characterized by scanning electron microscopy and
Fourier transform infrared spectroscopy. The influence of contact time and initial
adsorbate concentration on the adsorption capacity of unmodified and modified fly ash was
also examined. It has been shown that the adsorption characteristics depend on the amount
of polyethyleneimine added, that the adsorption follows a pseudo-second-order rate, and
the equilibrium adsorption data show better agreement with the Freundlich isotherm.",
publisher = "Beograd : Srpsko hemijsko društvo",
journal = "Kratki izvodi radova ; Knjiga radova / 59. savetovanje Srpskog hemijskog društva, Novi Sad 1. i 2. jun 2023. godine",
title = "Alkalno aktivirani leteći pepeo modifikovan polietileniminom kao adsorbent za uklanjanje metilensko plavog iz vode, Alkali-activated fly ash modified with polyethyleneimine as adsorbent for methylene blue removal from water",
pages = "126",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6603"
}

Maletić, M., Žižović, S., Vukčević, M., Milošević, M., Karić, N., Trivunac, K.,& Perić-Grujić, A.. (2023). Alkalno aktivirani leteći pepeo modifikovan polietileniminom kao adsorbent za uklanjanje metilensko plavog iz vode. in Kratki izvodi radova ; Knjiga radova / 59. savetovanje Srpskog hemijskog društva, Novi Sad 1. i 2. jun 2023. godine
Beograd : Srpsko hemijsko društvo., 126.
https://hdl.handle.net/21.15107/rcub_technorep_6603

Maletić M, Žižović S, Vukčević M, Milošević M, Karić N, Trivunac K, Perić-Grujić A. Alkalno aktivirani leteći pepeo modifikovan polietileniminom kao adsorbent za uklanjanje metilensko plavog iz vode. in Kratki izvodi radova ; Knjiga radova / 59. savetovanje Srpskog hemijskog društva, Novi Sad 1. i 2. jun 2023. godine. 2023;:126.
https://hdl.handle.net/21.15107/rcub_technorep_6603 .

Maletić, Marina, Žižović, Sara, Vukčević, Marija, Milošević, Milena, Karić, Nataša, Trivunac, Katarina, Perić-Grujić, Aleksandra, "Alkalno aktivirani leteći pepeo modifikovan polietileniminom kao adsorbent za uklanjanje metilensko plavog iz vode" in Kratki izvodi radova ; Knjiga radova / 59. savetovanje Srpskog hemijskog društva, Novi Sad 1. i 2. jun 2023. godine (2023):126,
https://hdl.handle.net/21.15107/rcub_technorep_6603 .

TY  - CONF
AU  - Trivunac, Katarina
AU  - Aćimović, Nikola
AU  - Vukčević, Marija
AU  - Maletić, Marina
AU  - Karić, Nataša
AU  - Perić-Grujić, Aleksandra
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6643
AB  - Accumulation of waste represents one of the biggest problems of modern civilization, from the energy, construction, urban, ecological and technological point of view. In this work, fly ash, as waste material from the power plant Nikola Tesla, was activated with sodium hydroxide at elevated temperature and then chemically modified with different amounts of polyethylenimine (PEI). The
successfulness of modification was confirmed by scanning electron microscopy and Fourier transform infrared spectroscopy. Prepared materials were then used to remove cadmium from wastewater and an increase in adsorption efficiency was observed for the fly ash sample modified with a smaller amount of PEI, with respect to the unmodified sample. The results of the adsorption experiments were processed using Langmuir and Freundlich adsorption isotherms and pseudo-first and pseudo-second order kinetic models. Also, the possibility of reusing the material in several
cycles was examined. It was found that fly ash, modified with an optimal amount of polyethyleneimine, could be an effective adsorbent.
PB  - Skopje : Society of Chemists and Technologists of Macedonia
C3  - Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia
T1  - Removal Of Cadmium(II) Ions from Water by Polyethylenimine Modified Fly Ash
SP  - 115
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6643
ER  - 

@conference{
author = "Trivunac, Katarina and Aćimović, Nikola and Vukčević, Marija and Maletić, Marina and Karić, Nataša and Perić-Grujić, Aleksandra",
year = "2023",
abstract = "Accumulation of waste represents one of the biggest problems of modern civilization, from the energy, construction, urban, ecological and technological point of view. In this work, fly ash, as waste material from the power plant Nikola Tesla, was activated with sodium hydroxide at elevated temperature and then chemically modified with different amounts of polyethylenimine (PEI). The
successfulness of modification was confirmed by scanning electron microscopy and Fourier transform infrared spectroscopy. Prepared materials were then used to remove cadmium from wastewater and an increase in adsorption efficiency was observed for the fly ash sample modified with a smaller amount of PEI, with respect to the unmodified sample. The results of the adsorption experiments were processed using Langmuir and Freundlich adsorption isotherms and pseudo-first and pseudo-second order kinetic models. Also, the possibility of reusing the material in several
cycles was examined. It was found that fly ash, modified with an optimal amount of polyethyleneimine, could be an effective adsorbent.",
publisher = "Skopje : Society of Chemists and Technologists of Macedonia",
journal = "Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia",
title = "Removal Of Cadmium(II) Ions from Water by Polyethylenimine Modified Fly Ash",
pages = "115",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6643"
}

Trivunac, K., Aćimović, N., Vukčević, M., Maletić, M., Karić, N.,& Perić-Grujić, A.. (2023). Removal Of Cadmium(II) Ions from Water by Polyethylenimine Modified Fly Ash. in Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia
Skopje : Society of Chemists and Technologists of Macedonia., 115.
https://hdl.handle.net/21.15107/rcub_technorep_6643

Trivunac K, Aćimović N, Vukčević M, Maletić M, Karić N, Perić-Grujić A. Removal Of Cadmium(II) Ions from Water by Polyethylenimine Modified Fly Ash. in Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia. 2023;:115.
https://hdl.handle.net/21.15107/rcub_technorep_6643 .

Trivunac, Katarina, Aćimović, Nikola, Vukčević, Marija, Maletić, Marina, Karić, Nataša, Perić-Grujić, Aleksandra, "Removal Of Cadmium(II) Ions from Water by Polyethylenimine Modified Fly Ash" in Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia (2023):115,
https://hdl.handle.net/21.15107/rcub_technorep_6643 .

TY  - CONF
AU  - Vukčević, Marija
AU  - Miletić, Katarina
AU  - Kostić, Kristina
AU  - Maletić, Marina
AU  - Karić, Nataša
AU  - Trivunac, Katarina
AU  - Perić-Grujić, Aleksandra
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6644
AB  - The possibility of utilizing waste lignocellulosic fibers for the removal of selected sedative residues from polluted water was investigated as an attempt to reuse textile waste and reduce its disposal costs. To increase the adsorption efficiency, waste hemp (H) and flax (F) fibers were modified with a benzoyl peroxide solution. Unmodified and modified fibers (HBP and FBP) were characterized by scanning electron microscopy and Fourier transform infrared spectroscopy, and it was found that applied modification caused the differences in morphology and surface chemistry, as the consequence of changes in the distribution of hemicelluloses in the structure of examined fibers. Adsorption properties were examined in the means of adsorption kinetics, isotherms, and the
influence of the initial pH of the adsorption solution. The applied modification increases the adsorption capacities of examined fibers, especially for bromazepam removal. Also, modification increases the adsorption rate and changes its order, while adsorption equilibrium data fits better the Langmuir isotherm model. Obtained results showed that waste hemp and flax fibers can be applied as low-cost adsorbents to efficiently remove sedative residues from water.
PB  - Skopje : Society of Chemists and Technologists of Macedonia
C3  - Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia
T1  - Modification of Waste Hemp and Flax Fibers for Removal of Selected Sedative Residues from Polluted Water
SP  - 116
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6644
ER  - 

@conference{
author = "Vukčević, Marija and Miletić, Katarina and Kostić, Kristina and Maletić, Marina and Karić, Nataša and Trivunac, Katarina and Perić-Grujić, Aleksandra",
year = "2023",
abstract = "The possibility of utilizing waste lignocellulosic fibers for the removal of selected sedative residues from polluted water was investigated as an attempt to reuse textile waste and reduce its disposal costs. To increase the adsorption efficiency, waste hemp (H) and flax (F) fibers were modified with a benzoyl peroxide solution. Unmodified and modified fibers (HBP and FBP) were characterized by scanning electron microscopy and Fourier transform infrared spectroscopy, and it was found that applied modification caused the differences in morphology and surface chemistry, as the consequence of changes in the distribution of hemicelluloses in the structure of examined fibers. Adsorption properties were examined in the means of adsorption kinetics, isotherms, and the
influence of the initial pH of the adsorption solution. The applied modification increases the adsorption capacities of examined fibers, especially for bromazepam removal. Also, modification increases the adsorption rate and changes its order, while adsorption equilibrium data fits better the Langmuir isotherm model. Obtained results showed that waste hemp and flax fibers can be applied as low-cost adsorbents to efficiently remove sedative residues from water.",
publisher = "Skopje : Society of Chemists and Technologists of Macedonia",
journal = "Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia",
title = "Modification of Waste Hemp and Flax Fibers for Removal of Selected Sedative Residues from Polluted Water",
pages = "116",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6644"
}

Vukčević, M., Miletić, K., Kostić, K., Maletić, M., Karić, N., Trivunac, K.,& Perić-Grujić, A.. (2023). Modification of Waste Hemp and Flax Fibers for Removal of Selected Sedative Residues from Polluted Water. in Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia
Skopje : Society of Chemists and Technologists of Macedonia., 116.
https://hdl.handle.net/21.15107/rcub_technorep_6644

Vukčević M, Miletić K, Kostić K, Maletić M, Karić N, Trivunac K, Perić-Grujić A. Modification of Waste Hemp and Flax Fibers for Removal of Selected Sedative Residues from Polluted Water. in Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia. 2023;:116.
https://hdl.handle.net/21.15107/rcub_technorep_6644 .

Vukčević, Marija, Miletić, Katarina, Kostić, Kristina, Maletić, Marina, Karić, Nataša, Trivunac, Katarina, Perić-Grujić, Aleksandra, "Modification of Waste Hemp and Flax Fibers for Removal of Selected Sedative Residues from Polluted Water" in Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia (2023):116,
https://hdl.handle.net/21.15107/rcub_technorep_6644 .

TY  - JOUR
AU  - Vuković, Jovana S.
AU  - Babić Radić, Marija M.
AU  - Trifunović, Saša B.
AU  - Koch, Thomas
AU  - Perić-Grujić, Aleksandra A.
AU  - Vojnović, Sandra
AU  - Tomić, Simonida Lj.
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6759
AB  - Antibacterial hydrogels, as an advanced approach, can create optimal conditions for wound healing, even in the fight against stubborn and difficult-to-treat wound infections. Interestingly, pH is an often neglected clinical parameter, although it has a significant impact on the wound healing process. At different stages of wound healing, the pH in the wound bed changes from slightly alkaline to neutral to acidic. To develop novel pH-sensitive antibacterial hydrogel dressings, Zn2+-loaded poly(2-hydroxyethyl acrylate/itaconic acid) hydrogels are synthesized. The hydrogels exhibit pH-sensitive swelling in the physiologically relevant pH range, with a pronounced swelling ability at neutral pH. The controlled release of Zn2+ occurs in a buffer of pH 7.40 at 37 °C. The liquid transport mechanism and release kinetics are evaluated using the specific kinetic models of Ritger-Peppas and Peppas-Sahlin. The effect of Zn2+ on structural, thermal, swelling, cytocompatibility, and antibacterial properties is evaluated by Fourier transform infrared spectroscopy, differential scanning calorimetry, swelling studies, MTT, and antibacterial tests. The hydrogels show excellent antibacterial activity against Escherichia coli. The research opens new perspectives for efficient wound healing management, and the extension of the study will be orchestrated by optimising the hydrogel composition to achieve improved performance.
PB  - John Wiley and Sons Inc.
T2  - Macromolecular Chemistry and Physics
T1  - Zn2+/Poly(2-Hydroxyethyl Acrylate/Itaconic Acid) Hydrogels as Potential Antibacterial Wound Dressings
SP  - 2300310
DO  - 10.1002/macp.202300310
ER  - 

@article{
author = "Vuković, Jovana S. and Babić Radić, Marija M. and Trifunović, Saša B. and Koch, Thomas and Perić-Grujić, Aleksandra A. and Vojnović, Sandra and Tomić, Simonida Lj.",
year = "2023",
abstract = "Antibacterial hydrogels, as an advanced approach, can create optimal conditions for wound healing, even in the fight against stubborn and difficult-to-treat wound infections. Interestingly, pH is an often neglected clinical parameter, although it has a significant impact on the wound healing process. At different stages of wound healing, the pH in the wound bed changes from slightly alkaline to neutral to acidic. To develop novel pH-sensitive antibacterial hydrogel dressings, Zn2+-loaded poly(2-hydroxyethyl acrylate/itaconic acid) hydrogels are synthesized. The hydrogels exhibit pH-sensitive swelling in the physiologically relevant pH range, with a pronounced swelling ability at neutral pH. The controlled release of Zn2+ occurs in a buffer of pH 7.40 at 37 °C. The liquid transport mechanism and release kinetics are evaluated using the specific kinetic models of Ritger-Peppas and Peppas-Sahlin. The effect of Zn2+ on structural, thermal, swelling, cytocompatibility, and antibacterial properties is evaluated by Fourier transform infrared spectroscopy, differential scanning calorimetry, swelling studies, MTT, and antibacterial tests. The hydrogels show excellent antibacterial activity against Escherichia coli. The research opens new perspectives for efficient wound healing management, and the extension of the study will be orchestrated by optimising the hydrogel composition to achieve improved performance.",
publisher = "John Wiley and Sons Inc.",
journal = "Macromolecular Chemistry and Physics",
title = "Zn2+/Poly(2-Hydroxyethyl Acrylate/Itaconic Acid) Hydrogels as Potential Antibacterial Wound Dressings",
pages = "2300310",
doi = "10.1002/macp.202300310"
}

Vuković, J. S., Babić Radić, M. M., Trifunović, S. B., Koch, T., Perić-Grujić, A. A., Vojnović, S.,& Tomić, S. Lj.. (2023). Zn2+/Poly(2-Hydroxyethyl Acrylate/Itaconic Acid) Hydrogels as Potential Antibacterial Wound Dressings. in Macromolecular Chemistry and Physics
John Wiley and Sons Inc.., 2300310.
https://doi.org/10.1002/macp.202300310

Vuković JS, Babić Radić MM, Trifunović SB, Koch T, Perić-Grujić AA, Vojnović S, Tomić SL. Zn2+/Poly(2-Hydroxyethyl Acrylate/Itaconic Acid) Hydrogels as Potential Antibacterial Wound Dressings. in Macromolecular Chemistry and Physics. 2023;:2300310.
doi:10.1002/macp.202300310 .

Vuković, Jovana S., Babić Radić, Marija M., Trifunović, Saša B., Koch, Thomas, Perić-Grujić, Aleksandra A., Vojnović, Sandra, Tomić, Simonida Lj., "Zn2+/Poly(2-Hydroxyethyl Acrylate/Itaconic Acid) Hydrogels as Potential Antibacterial Wound Dressings" in Macromolecular Chemistry and Physics (2023):2300310,
https://doi.org/10.1002/macp.202300310 . .

TY  - CONF
AU  - Karić, Nataša
AU  - Vukčević, Marija
AU  - Maletić, Marina
AU  - Ristić, Mirjana
AU  - Perić-Grujić, Aleksandra
AU  - Trivunac, Katarina V.
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6998
AB  - Organic and inorganic pollutants, accumulated in the environment, could pose a potential danger to living organisms. Some of these pollutants negatively affect the physiological activities of living organisms, and in certain concentrations, they can be lethal to biotic communities. In addition to the natural sources of emission of these substances in the environment, a large number of anthropogenic activities contribute to a sudden increase in their concentration. The development of new and improving existing ecologically sustainable techniques to prevent or reduce their outflow and retention in the environment is more necessary than ever. Therefore, the focus of this work will be examining the efficiency of 
 environmentally friendly adsorbent based on modified starch and diatomaceous earth for the removal of selected organic and inorganic pollutants from aqueous solutions. The influence of the chemical modification of starch, followed by the addition of diatomaceous earth, on its structural, morphological, and adsorption properties, will be examined. The possibility of using starch-diatomaceous earth adsorbent for the removal of brilliant green dye, pharmaceutical compounds, and lead ions from aqueous solutions will be evaluated through the adsorption efficiency under the given conditions.
PB  - Belgrade : The Academy of Applied Technical Studies "Belgrade"
C3  - Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023
T1  - Removal of organic and inorganic pollutants from aqueous solutions using starch-diatomaceous earth adsorbent
EP  - 65
SP  - 60
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6998
ER  - 

@conference{
author = "Karić, Nataša and Vukčević, Marija and Maletić, Marina and Ristić, Mirjana and Perić-Grujić, Aleksandra and Trivunac, Katarina V.",
year = "2023",
abstract = "Organic and inorganic pollutants, accumulated in the environment, could pose a potential danger to living organisms. Some of these pollutants negatively affect the physiological activities of living organisms, and in certain concentrations, they can be lethal to biotic communities. In addition to the natural sources of emission of these substances in the environment, a large number of anthropogenic activities contribute to a sudden increase in their concentration. The development of new and improving existing ecologically sustainable techniques to prevent or reduce their outflow and retention in the environment is more necessary than ever. Therefore, the focus of this work will be examining the efficiency of 
 environmentally friendly adsorbent based on modified starch and diatomaceous earth for the removal of selected organic and inorganic pollutants from aqueous solutions. The influence of the chemical modification of starch, followed by the addition of diatomaceous earth, on its structural, morphological, and adsorption properties, will be examined. The possibility of using starch-diatomaceous earth adsorbent for the removal of brilliant green dye, pharmaceutical compounds, and lead ions from aqueous solutions will be evaluated through the adsorption efficiency under the given conditions.",
publisher = "Belgrade : The Academy of Applied Technical Studies "Belgrade"",
journal = "Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023",
title = "Removal of organic and inorganic pollutants from aqueous solutions using starch-diatomaceous earth adsorbent",
pages = "65-60",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6998"
}

Karić, N., Vukčević, M., Maletić, M., Ristić, M., Perić-Grujić, A.,& Trivunac, K. V.. (2023). Removal of organic and inorganic pollutants from aqueous solutions using starch-diatomaceous earth adsorbent. in Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023
Belgrade : The Academy of Applied Technical Studies "Belgrade"., 60-65.
https://hdl.handle.net/21.15107/rcub_technorep_6998

Karić N, Vukčević M, Maletić M, Ristić M, Perić-Grujić A, Trivunac KV. Removal of organic and inorganic pollutants from aqueous solutions using starch-diatomaceous earth adsorbent. in Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023. 2023;:60-65.
https://hdl.handle.net/21.15107/rcub_technorep_6998 .

Karić, Nataša, Vukčević, Marija, Maletić, Marina, Ristić, Mirjana, Perić-Grujić, Aleksandra, Trivunac, Katarina V., "Removal of organic and inorganic pollutants from aqueous solutions using starch-diatomaceous earth adsorbent" in Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023 (2023):60-65,
https://hdl.handle.net/21.15107/rcub_technorep_6998 .

TY  - JOUR
AU  - Karić, Nataša
AU  - Vukčević, Marija
AU  - Maletić, Marina
AU  - Dimitrijević, Silvana
AU  - Ristić, Mirjana
AU  - Perić Grujić, Aleksandra
AU  - Trivunac, Katarina
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6367
AB  - In this study, an environmentally sustainable process of crystal violet, congo red, methylene blue, brilliant green, Pb2+, Cd2+, and Zn2+ ions adsorption from aqueous solutions onto amino-modified starch derivatives was investigated. The degree of substitution, elemental analysis, swelling capacity, solubility, and FTIR, XRD, and SEM techniques were used to characterize the adsorbents. The influence of pH, contact time, temperature, and initial concentration has been studied to optimize the adsorption conditions. The amino-modified starch was the most effective in removing crystal violet (CV) (65.31–80.46 %) and Pb2+ (67.44–80.33 %) within the optimal adsorption conditions (pH 5, 10 mg dm−3, 25 °C, 180 min). The adsorption of CV could be described by both Langmuir and Freundlich adsorption isotherms, while the adsorption of Pb2+ ions was better described by the Langmuir isotherm. The pseudo-second order model can be used to describe the adsorption kinetics of CV and Pb2+ on all tested samples. The thermodynamic study indicated that the adsorption of CV was exothermic, while the Pb2+ adsorption was endothermic. The simultaneous removal of CV and Pb2+ from the binary mixture has shown their competitive behavior. Thus, the amino-modified starch is a promising eco-friendly adsorbent for the removal of dyes and heavy metals from polluted water.
PB  - Elsevier B.V.
T2  - International Journal of Biological Macromolecules
T1  - Physico-chemical, structural, and adsorption properties of amino-modified starch derivatives for the removal of (in)organic pollutants from aqueous solutions
SP  - 124527
VL  - 241
DO  - 10.1016/j.ijbiomac.2023.124527
ER  - 

@article{
author = "Karić, Nataša and Vukčević, Marija and Maletić, Marina and Dimitrijević, Silvana and Ristić, Mirjana and Perić Grujić, Aleksandra and Trivunac, Katarina",
year = "2023",
abstract = "In this study, an environmentally sustainable process of crystal violet, congo red, methylene blue, brilliant green, Pb2+, Cd2+, and Zn2+ ions adsorption from aqueous solutions onto amino-modified starch derivatives was investigated. The degree of substitution, elemental analysis, swelling capacity, solubility, and FTIR, XRD, and SEM techniques were used to characterize the adsorbents. The influence of pH, contact time, temperature, and initial concentration has been studied to optimize the adsorption conditions. The amino-modified starch was the most effective in removing crystal violet (CV) (65.31–80.46 %) and Pb2+ (67.44–80.33 %) within the optimal adsorption conditions (pH 5, 10 mg dm−3, 25 °C, 180 min). The adsorption of CV could be described by both Langmuir and Freundlich adsorption isotherms, while the adsorption of Pb2+ ions was better described by the Langmuir isotherm. The pseudo-second order model can be used to describe the adsorption kinetics of CV and Pb2+ on all tested samples. The thermodynamic study indicated that the adsorption of CV was exothermic, while the Pb2+ adsorption was endothermic. The simultaneous removal of CV and Pb2+ from the binary mixture has shown their competitive behavior. Thus, the amino-modified starch is a promising eco-friendly adsorbent for the removal of dyes and heavy metals from polluted water.",
publisher = "Elsevier B.V.",
journal = "International Journal of Biological Macromolecules",
title = "Physico-chemical, structural, and adsorption properties of amino-modified starch derivatives for the removal of (in)organic pollutants from aqueous solutions",
pages = "124527",
volume = "241",
doi = "10.1016/j.ijbiomac.2023.124527"
}

Karić, N., Vukčević, M., Maletić, M., Dimitrijević, S., Ristić, M., Perić Grujić, A.,& Trivunac, K.. (2023). Physico-chemical, structural, and adsorption properties of amino-modified starch derivatives for the removal of (in)organic pollutants from aqueous solutions. in International Journal of Biological Macromolecules
Elsevier B.V.., 241, 124527.
https://doi.org/10.1016/j.ijbiomac.2023.124527

Karić N, Vukčević M, Maletić M, Dimitrijević S, Ristić M, Perić Grujić A, Trivunac K. Physico-chemical, structural, and adsorption properties of amino-modified starch derivatives for the removal of (in)organic pollutants from aqueous solutions. in International Journal of Biological Macromolecules. 2023;241:124527.
doi:10.1016/j.ijbiomac.2023.124527 .

Karić, Nataša, Vukčević, Marija, Maletić, Marina, Dimitrijević, Silvana, Ristić, Mirjana, Perić Grujić, Aleksandra, Trivunac, Katarina, "Physico-chemical, structural, and adsorption properties of amino-modified starch derivatives for the removal of (in)organic pollutants from aqueous solutions" in International Journal of Biological Macromolecules, 241 (2023):124527,
https://doi.org/10.1016/j.ijbiomac.2023.124527 . .

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

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

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

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

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

TY  - JOUR
AU  - Vukčević, Marija
AU  - Maletić, Marina
AU  - Karić, Nataša
AU  - Pejić, Biljana
AU  - Trivunac, Katarina
AU  - Perić Grujić, Aleksandra
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6813
AB  - In an attempt to reuse fibrous textile waste, and at the same time to reduce its quantity, waste hemp and
flax fibers, and cotton yarn were used as cheap and sustainable adsorbents for the removal of pharmaceuticals
from water. In order to improve their adsorption properties, waste fibers, and yarn samples were modified using
18% NaOH solution. Morphology, surface chemistry, and structural characteristics were examined through scanning
electron microscopy, Fourier transform infrared spectroscopy, degree of surface crystallinity, and crystallinity
index. Adsorption properties were analyzed through the determination of iodine sorption and water retention, as
well as, the adsorption of selected sedatives. Modification with 18% NaOH increased the content of amorphous
areas in examined fibers and yarn samples, improving their adsorption characteristics. Utilization of both unmodified
and modified samples enables fast and highly efficient removal (adsorption efficiency ranging from 75 to
100%) of sedatives from water, making waste hemp and flax fibers and cotton yarn samples promising adsorbents
for water treatment.
AB  - U cilju smanjenja količine vlaknastog tekstilnog otpada, kao i njegove ponovne upotrebe, u ovom
radu je ispitana mogućnost primene otpadnih vlakana konoplje i lana i pamučnog prediva, kao jeftinih i održivih adsorbenata za uklanjanje lekova iz vode. Izvršena je hemijska modifikacija otpadnih vlakana i prediva 18%
rastvorom NaOH, da bi se poboljšala adsorpciona svojstva materijala. Morfologija, hemija površine i strukturne
karakteristike korišćenih materijala ispitane su skenirajućom elektronskom mikroskopijom, infracrvenom spektroskopijom sa Furijeovom transformacijom, kao i određivanjem stepena površinske kristaliničnosti i indeksa
kristalnosti. Adsorpciona svojstva su analizirana kroz vrednosti sorpcije joda i sposobnosti zadržavanja vode,
kao i određivanjem adsorpcionih kapaciteta ispitivanih materijala za uklanjanje odabranih sedativa. Primenjeni alkalni tretman dovodi do povećanja sadržaja amorfnih oblasti u ispitivanim uzorcima vlakana i prediva,
poboljšavajući njihove adsorpcione karakteristike. Dobijeni rezultati su pokazali da primena nemodifikovanih
i modifikovanih otpadnih vlakana konoplje i lana i pamučnog prediva omogućava brzo i visoko efikasno uklanjanje (efikasnost adsorpcije u opsegu 75 - 100%) sedativa iz vode.
PB  - Savez inženjera i tehničara tekstilaca Srbije
T2  - Tekstilna industrija
T1  - CELLULOSE-BASED WASTE STRUCTURE AND CHEMICAL COMPOSITION IMPACT ON THE ADSORPTION OF PHARMACEUTICALS
T1  - UTICAJ STRUKTURE I HEMIJSKOG SASTAVA CELULOZNOG OTPADA NA ADSORPCIJU FARMACEUTIKA
EP  - 12
IS  - 3
SP  - 4
VL  - 71
DO  - 10.5937/tekstind2303004V
ER  - 

@article{
author = "Vukčević, Marija and Maletić, Marina and Karić, Nataša and Pejić, Biljana and Trivunac, Katarina and Perić Grujić, Aleksandra",
year = "2023",
abstract = "In an attempt to reuse fibrous textile waste, and at the same time to reduce its quantity, waste hemp and
flax fibers, and cotton yarn were used as cheap and sustainable adsorbents for the removal of pharmaceuticals
from water. In order to improve their adsorption properties, waste fibers, and yarn samples were modified using
18% NaOH solution. Morphology, surface chemistry, and structural characteristics were examined through scanning
electron microscopy, Fourier transform infrared spectroscopy, degree of surface crystallinity, and crystallinity
index. Adsorption properties were analyzed through the determination of iodine sorption and water retention, as
well as, the adsorption of selected sedatives. Modification with 18% NaOH increased the content of amorphous
areas in examined fibers and yarn samples, improving their adsorption characteristics. Utilization of both unmodified
and modified samples enables fast and highly efficient removal (adsorption efficiency ranging from 75 to
100%) of sedatives from water, making waste hemp and flax fibers and cotton yarn samples promising adsorbents
for water treatment., U cilju smanjenja količine vlaknastog tekstilnog otpada, kao i njegove ponovne upotrebe, u ovom
radu je ispitana mogućnost primene otpadnih vlakana konoplje i lana i pamučnog prediva, kao jeftinih i održivih adsorbenata za uklanjanje lekova iz vode. Izvršena je hemijska modifikacija otpadnih vlakana i prediva 18%
rastvorom NaOH, da bi se poboljšala adsorpciona svojstva materijala. Morfologija, hemija površine i strukturne
karakteristike korišćenih materijala ispitane su skenirajućom elektronskom mikroskopijom, infracrvenom spektroskopijom sa Furijeovom transformacijom, kao i određivanjem stepena površinske kristaliničnosti i indeksa
kristalnosti. Adsorpciona svojstva su analizirana kroz vrednosti sorpcije joda i sposobnosti zadržavanja vode,
kao i određivanjem adsorpcionih kapaciteta ispitivanih materijala za uklanjanje odabranih sedativa. Primenjeni alkalni tretman dovodi do povećanja sadržaja amorfnih oblasti u ispitivanim uzorcima vlakana i prediva,
poboljšavajući njihove adsorpcione karakteristike. Dobijeni rezultati su pokazali da primena nemodifikovanih
i modifikovanih otpadnih vlakana konoplje i lana i pamučnog prediva omogućava brzo i visoko efikasno uklanjanje (efikasnost adsorpcije u opsegu 75 - 100%) sedativa iz vode.",
publisher = "Savez inženjera i tehničara tekstilaca Srbije",
journal = "Tekstilna industrija",
title = "CELLULOSE-BASED WASTE STRUCTURE AND CHEMICAL COMPOSITION IMPACT ON THE ADSORPTION OF PHARMACEUTICALS, UTICAJ STRUKTURE I HEMIJSKOG SASTAVA CELULOZNOG OTPADA NA ADSORPCIJU FARMACEUTIKA",
pages = "12-4",
number = "3",
volume = "71",
doi = "10.5937/tekstind2303004V"
}

Vukčević, M., Maletić, M., Karić, N., Pejić, B., Trivunac, K.,& Perić Grujić, A.. (2023). CELLULOSE-BASED WASTE STRUCTURE AND CHEMICAL COMPOSITION IMPACT ON THE ADSORPTION OF PHARMACEUTICALS. in Tekstilna industrija
Savez inženjera i tehničara tekstilaca Srbije., 71(3), 4-12.
https://doi.org/10.5937/tekstind2303004V

Vukčević M, Maletić M, Karić N, Pejić B, Trivunac K, Perić Grujić A. CELLULOSE-BASED WASTE STRUCTURE AND CHEMICAL COMPOSITION IMPACT ON THE ADSORPTION OF PHARMACEUTICALS. in Tekstilna industrija. 2023;71(3):4-12.
doi:10.5937/tekstind2303004V .

Vukčević, Marija, Maletić, Marina, Karić, Nataša, Pejić, Biljana, Trivunac, Katarina, Perić Grujić, Aleksandra, "CELLULOSE-BASED WASTE STRUCTURE AND CHEMICAL COMPOSITION IMPACT ON THE ADSORPTION OF PHARMACEUTICALS" in Tekstilna industrija, 71, no. 3 (2023):4-12,
https://doi.org/10.5937/tekstind2303004V . .

TY  - CONF
AU  - Karić, Nataša
AU  - Maletić, Marina
AU  - Živojinović, Sara
AU  - Vukčević, Marija
AU  - Milošević, Milena
AU  - Trivunac, Katarina
AU  - Perić Grujić, Aleksandra
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6997
AB  - Fly ash (FA) is an industrial waste material generated during coal combustion in thermal
power plants. In order to reuse this kind of industrial waste, and at the same time to reduce its
quantity, fly ash was used as a cheap material for the preparation of efficient adsorbents for the
removal of selected dyes from water. For that purpose, different modification methods were used to
obtain alkali-activated fly ash samples. The success of the modification process and characterization
of the unmodified and modified materials was monitored by Fourier transform infrared spectroscopy,
and scanning electron microscopy/energy dispersive spectroscopy. The adsorption properties of
examined samples were studied through the adsorption of methylene blue, crystal violet, alizarin red,
and methyl orange. All samples showed the highest adsorption efficiency for crystal violet removal,
while the sample modified with a combination of NaOH, Na2SiO3, and diatomaceous earth
(FA/geopolymer) was the most efficient adsorbent for all selected dyes. Therefore, the influence of
initial pH value and contact time on adsorption was examined for the adsorption of crystal violet
onto FA/geopolymer. It was found that alkaline modification improves the adsorption characteristics
of fly ash making it a promising candidate to solve the problem of colored wastewater.
PB  - Belgrade : The Academy of Applied Technical Studies "Belgrade"
C3  - Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023
T1  - ALKALI MODIFICATION OF FLY ASH FOR ADSORPTION OF SELECTED DYES
EP  - 70
SP  - 66
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6997
ER  - 

@conference{
author = "Karić, Nataša and Maletić, Marina and Živojinović, Sara and Vukčević, Marija and Milošević, Milena and Trivunac, Katarina and Perić Grujić, Aleksandra",
year = "2023",
abstract = "Fly ash (FA) is an industrial waste material generated during coal combustion in thermal
power plants. In order to reuse this kind of industrial waste, and at the same time to reduce its
quantity, fly ash was used as a cheap material for the preparation of efficient adsorbents for the
removal of selected dyes from water. For that purpose, different modification methods were used to
obtain alkali-activated fly ash samples. The success of the modification process and characterization
of the unmodified and modified materials was monitored by Fourier transform infrared spectroscopy,
and scanning electron microscopy/energy dispersive spectroscopy. The adsorption properties of
examined samples were studied through the adsorption of methylene blue, crystal violet, alizarin red,
and methyl orange. All samples showed the highest adsorption efficiency for crystal violet removal,
while the sample modified with a combination of NaOH, Na2SiO3, and diatomaceous earth
(FA/geopolymer) was the most efficient adsorbent for all selected dyes. Therefore, the influence of
initial pH value and contact time on adsorption was examined for the adsorption of crystal violet
onto FA/geopolymer. It was found that alkaline modification improves the adsorption characteristics
of fly ash making it a promising candidate to solve the problem of colored wastewater.",
publisher = "Belgrade : The Academy of Applied Technical Studies "Belgrade"",
journal = "Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023",
title = "ALKALI MODIFICATION OF FLY ASH FOR ADSORPTION OF SELECTED DYES",
pages = "70-66",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6997"
}

Karić, N., Maletić, M., Živojinović, S., Vukčević, M., Milošević, M., Trivunac, K.,& Perić Grujić, A.. (2023). ALKALI MODIFICATION OF FLY ASH FOR ADSORPTION OF SELECTED DYES. in Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023
Belgrade : The Academy of Applied Technical Studies "Belgrade"., 66-70.
https://hdl.handle.net/21.15107/rcub_technorep_6997

Karić N, Maletić M, Živojinović S, Vukčević M, Milošević M, Trivunac K, Perić Grujić A. ALKALI MODIFICATION OF FLY ASH FOR ADSORPTION OF SELECTED DYES. in Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023. 2023;:66-70.
https://hdl.handle.net/21.15107/rcub_technorep_6997 .

Karić, Nataša, Maletić, Marina, Živojinović, Sara, Vukčević, Marija, Milošević, Milena, Trivunac, Katarina, Perić Grujić, Aleksandra, "ALKALI MODIFICATION OF FLY ASH FOR ADSORPTION OF SELECTED DYES" in Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023 (2023):66-70,
https://hdl.handle.net/21.15107/rcub_technorep_6997 .

TY  - CONF
AU  - Maletić, Marina
AU  - Vukčević, Marija
AU  - Pejić, Biljana
AU  - Kostić, Mirjana
AU  - Perić Grujić, Aleksandra
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6642
AB  - In an attempt to reuse fibrous textile waste, and at the same time to reduce its quantity, waste cotton-based yarn was used as a cheap and sustainable precursor for carbon adsorbents production. Cotton and cotton/polyester yarn samples were carbonized using hydrothermal and classical carbonization and activated using KOH as activating agent. Nitrogen adsorption-desorption isotherms, scanning electron microscopy, Fourier transform infrared spectroscopy, and Boehm titration methods were used to analyze the structural and surface properties of obtained carbon samples. The adsorption properties of cotton-based carbon materials were tested through the adsorption of selected organic dyes from water. The influence of contact time, initial concentration, and pH value of adsorbate solution on adsorption was examined and experimental data were processed by theoretical models. It was found that the adsorption properties of carbonized samples were negatively affected by the presence of a polyester component in the precursor structure. Nevertheless, the cotton-based carbon adsorbents obtained by carbonization, and subsequent activation proved to be highly efficient adsorbents for organic dye removal from water.
AB  - U cilju iskorišćenja vlaknastog tekstilnog otpada, kao i smanjenja njegove količine, otpadna prediva na bazi pamuka su korišćena kao jeftina sirovina za proizvodnju ugljeničnih materijala. Pamučno predivo, kao i predivo mešavine pamuka i poliestra, karbonizovani su primenom klasične ili hidrotermalne karbonizacije, i naknadno aktivirani u prisustvu KOH kao aktivirajućeg agensa. Strukturne i površinske karakteristike dobijenih ugljeničnih materijala ispitane su analizom adsorpciono-desorpcionih izotermi azota i rezultata Bemovih titracija, kao i skenirajućom elektronskom mikroskopijom i infracrvenom spektroskopijom sa Furijeovom transformacijom. Adsorpcija odabranih organskih boja iz vodenih rastvora je korišćenja za ispitivanje adsorpcionih karakteristika, a ispitan je i uticaj vremena kontakta, početne koncentracije i pH vrednosti rastvora adsorbata na adsorpcione kapacitete ugljeničnih adsorbenata. Pokazano je da prisustvo poliestarske komponente u strukturi prekursora ima negativan uticaj na adsorpcione karakteristike materijala dobijenih samo karbonizacijom. S druge strane, svi uzorci ugljeničnih materijala dobijeni karbonizacijom pređa na bazi pamuka i naknadnom aktivacijom pokazuju visoku efikasnost u uklanjanju boja iz vode.
PB  - Belgrade : Union of Engineers and Textile Technicians of Serbia
C3  - Proceedings / VI International Scientific Conference Contemporary Trends and Innovations in the Textile Industry, CT&ITI, Belgrade, 14-15th September
T1  - ORGANIC DYES ADSORPTION ON CARBON ADSORBENTS DERIVED FROM WASTE COTTON AND COTTON/POLYESTER YARN
T1  - ADSORPCIJA ORGANSKIH BOJA NA UGLJENIČNIM ADSORBENTIMA DOBIJENIM OD OTPADNOG PREDIVA PAMUKA I PAMUK/POLIESTRA
EP  - 402
SP  - 394
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6642
ER  - 

@conference{
author = "Maletić, Marina and Vukčević, Marija and Pejić, Biljana and Kostić, Mirjana and Perić Grujić, Aleksandra",
year = "2023",
abstract = "In an attempt to reuse fibrous textile waste, and at the same time to reduce its quantity, waste cotton-based yarn was used as a cheap and sustainable precursor for carbon adsorbents production. Cotton and cotton/polyester yarn samples were carbonized using hydrothermal and classical carbonization and activated using KOH as activating agent. Nitrogen adsorption-desorption isotherms, scanning electron microscopy, Fourier transform infrared spectroscopy, and Boehm titration methods were used to analyze the structural and surface properties of obtained carbon samples. The adsorption properties of cotton-based carbon materials were tested through the adsorption of selected organic dyes from water. The influence of contact time, initial concentration, and pH value of adsorbate solution on adsorption was examined and experimental data were processed by theoretical models. It was found that the adsorption properties of carbonized samples were negatively affected by the presence of a polyester component in the precursor structure. Nevertheless, the cotton-based carbon adsorbents obtained by carbonization, and subsequent activation proved to be highly efficient adsorbents for organic dye removal from water., U cilju iskorišćenja vlaknastog tekstilnog otpada, kao i smanjenja njegove količine, otpadna prediva na bazi pamuka su korišćena kao jeftina sirovina za proizvodnju ugljeničnih materijala. Pamučno predivo, kao i predivo mešavine pamuka i poliestra, karbonizovani su primenom klasične ili hidrotermalne karbonizacije, i naknadno aktivirani u prisustvu KOH kao aktivirajućeg agensa. Strukturne i površinske karakteristike dobijenih ugljeničnih materijala ispitane su analizom adsorpciono-desorpcionih izotermi azota i rezultata Bemovih titracija, kao i skenirajućom elektronskom mikroskopijom i infracrvenom spektroskopijom sa Furijeovom transformacijom. Adsorpcija odabranih organskih boja iz vodenih rastvora je korišćenja za ispitivanje adsorpcionih karakteristika, a ispitan je i uticaj vremena kontakta, početne koncentracije i pH vrednosti rastvora adsorbata na adsorpcione kapacitete ugljeničnih adsorbenata. Pokazano je da prisustvo poliestarske komponente u strukturi prekursora ima negativan uticaj na adsorpcione karakteristike materijala dobijenih samo karbonizacijom. S druge strane, svi uzorci ugljeničnih materijala dobijeni karbonizacijom pređa na bazi pamuka i naknadnom aktivacijom pokazuju visoku efikasnost u uklanjanju boja iz vode.",
publisher = "Belgrade : Union of Engineers and Textile Technicians of Serbia",
journal = "Proceedings / VI International Scientific Conference Contemporary Trends and Innovations in the Textile Industry, CT&ITI, Belgrade, 14-15th September",
title = "ORGANIC DYES ADSORPTION ON CARBON ADSORBENTS DERIVED FROM WASTE COTTON AND COTTON/POLYESTER YARN, ADSORPCIJA ORGANSKIH BOJA NA UGLJENIČNIM ADSORBENTIMA DOBIJENIM OD OTPADNOG PREDIVA PAMUKA I PAMUK/POLIESTRA",
pages = "402-394",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6642"
}

Maletić, M., Vukčević, M., Pejić, B., Kostić, M.,& Perić Grujić, A.. (2023). ORGANIC DYES ADSORPTION ON CARBON ADSORBENTS DERIVED FROM WASTE COTTON AND COTTON/POLYESTER YARN. in Proceedings / VI International Scientific Conference Contemporary Trends and Innovations in the Textile Industry, CT&ITI, Belgrade, 14-15th September
Belgrade : Union of Engineers and Textile Technicians of Serbia., 394-402.
https://hdl.handle.net/21.15107/rcub_technorep_6642

Maletić M, Vukčević M, Pejić B, Kostić M, Perić Grujić A. ORGANIC DYES ADSORPTION ON CARBON ADSORBENTS DERIVED FROM WASTE COTTON AND COTTON/POLYESTER YARN. in Proceedings / VI International Scientific Conference Contemporary Trends and Innovations in the Textile Industry, CT&ITI, Belgrade, 14-15th September. 2023;:394-402.
https://hdl.handle.net/21.15107/rcub_technorep_6642 .

Maletić, Marina, Vukčević, Marija, Pejić, Biljana, Kostić, Mirjana, Perić Grujić, Aleksandra, "ORGANIC DYES ADSORPTION ON CARBON ADSORBENTS DERIVED FROM WASTE COTTON AND COTTON/POLYESTER YARN" in Proceedings / VI International Scientific Conference Contemporary Trends and Innovations in the Textile Industry, CT&ITI, Belgrade, 14-15th September (2023):394-402,
https://hdl.handle.net/21.15107/rcub_technorep_6642 .

TY  - JOUR
AU  - Marjanović, Vesna
AU  - Marković, Radmila
AU  - Steharnik, Mirjana
AU  - Dimitrijević, Silvana
AU  - Marinković, Aleksandar D.
AU  - Perić-Grujić, Aleksandra
AU  - Đolić, Maja
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5271
AB  - Highly porous lignin-based microspheres, modified by magnetite nanoparticles, were used for the first time for the removal of selenate anions, Se(VI), from spiked and real water samples. The influence of experimental conditions: selenate concentration, adsorbent dosage and contact time on the adsorption capacity was investigated in a batch experimental mode. The FTIR, XRD, SEM techniques were used to analyze the structural and morphological properties of the native and exhausted adsorbent. The maximum adsorption capacity was found to be 69.9 mg/g for Se(VI) anions at pH 6.46 from the simulated water samples. The modified natural polymer was efficient in Se(VI) removal from the real (potable) water samples, originated from six cities in the Republic of Serbia, with an overage efficacy of 20%. The regeneration capacity of 61% in one cycle of desorption (0.5 M NaOH as desorption solution) of bio-based adsorbent was gained in this investigation. The examined material demonstrated a significant affinity for Se(VI) oxyanion, but a low potential for multi-cycle material application; consequently, the loaded sorbent could be proposed to be used as a Se fertilizer.
PB  - MDPI
T2  - International Journal of Molecular Sciences
T1  - Lignin Microspheres Modified with Magnetite Nanoparticles as a Selenate Highly Porous Adsorbent
IS  - 22
SP  - 13872
VL  - 23
DO  - 10.3390/ijms232213872
ER  - 

@article{
author = "Marjanović, Vesna and Marković, Radmila and Steharnik, Mirjana and Dimitrijević, Silvana and Marinković, Aleksandar D. and Perić-Grujić, Aleksandra and Đolić, Maja",
year = "2022",
abstract = "Highly porous lignin-based microspheres, modified by magnetite nanoparticles, were used for the first time for the removal of selenate anions, Se(VI), from spiked and real water samples. The influence of experimental conditions: selenate concentration, adsorbent dosage and contact time on the adsorption capacity was investigated in a batch experimental mode. The FTIR, XRD, SEM techniques were used to analyze the structural and morphological properties of the native and exhausted adsorbent. The maximum adsorption capacity was found to be 69.9 mg/g for Se(VI) anions at pH 6.46 from the simulated water samples. The modified natural polymer was efficient in Se(VI) removal from the real (potable) water samples, originated from six cities in the Republic of Serbia, with an overage efficacy of 20%. The regeneration capacity of 61% in one cycle of desorption (0.5 M NaOH as desorption solution) of bio-based adsorbent was gained in this investigation. The examined material demonstrated a significant affinity for Se(VI) oxyanion, but a low potential for multi-cycle material application; consequently, the loaded sorbent could be proposed to be used as a Se fertilizer.",
publisher = "MDPI",
journal = "International Journal of Molecular Sciences",
title = "Lignin Microspheres Modified with Magnetite Nanoparticles as a Selenate Highly Porous Adsorbent",
number = "22",
pages = "13872",
volume = "23",
doi = "10.3390/ijms232213872"
}

Marjanović, V., Marković, R., Steharnik, M., Dimitrijević, S., Marinković, A. D., Perić-Grujić, A.,& Đolić, M.. (2022). Lignin Microspheres Modified with Magnetite Nanoparticles as a Selenate Highly Porous Adsorbent. in International Journal of Molecular Sciences
MDPI., 23(22), 13872.
https://doi.org/10.3390/ijms232213872

Marjanović V, Marković R, Steharnik M, Dimitrijević S, Marinković AD, Perić-Grujić A, Đolić M. Lignin Microspheres Modified with Magnetite Nanoparticles as a Selenate Highly Porous Adsorbent. in International Journal of Molecular Sciences. 2022;23(22):13872.
doi:10.3390/ijms232213872 .

Marjanović, Vesna, Marković, Radmila, Steharnik, Mirjana, Dimitrijević, Silvana, Marinković, Aleksandar D., Perić-Grujić, Aleksandra, Đolić, Maja, "Lignin Microspheres Modified with Magnetite Nanoparticles as a Selenate Highly Porous Adsorbent" in International Journal of Molecular Sciences, 23, no. 22 (2022):13872,
https://doi.org/10.3390/ijms232213872 . .

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

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

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

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

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

TY  - CONF
AU  - Stanišić, Tijana
AU  - Đolić, Maja
AU  - Ristić, Mirjana
AU  - Perić Grujić, Aleksandra
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6051
AB  - In this study, the adsorption capacity and removal efficiency of lead using various metal-oxide materials from aqueous solution have been analyzed. Two SiO2-based materials, natural (loam) and synthesized (metal-oxide heterostructures – MOH) were investigated. The characterization of these samples was performed using X-ray powder diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR). Adsorption tests were performed in a batch system by varying the mass of tested materials. The highest adsorption capacity for Pb2+ was achieved using 5 mg of MOH (166.6 µg g-1), while the removal efficiency using the optimal mass (10 mg) of MOH and loam was 99.3 and 94.2 %, respectively. Based on the obtained results, it was concluded that the synthetic material has higher adsorption capacity and removal efficiency than the natural material for the selected ion.
PB  - Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings)
T1  - COMPARATIVE ANALYSIS OF Pb2+ SEPARATION USING NATURAL AND SYNTHETIC SILICATE MATERIALS
EP  - 468
SP  - 465
VL  - II
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6051
ER  - 

@conference{
author = "Stanišić, Tijana and Đolić, Maja and Ristić, Mirjana and Perić Grujić, Aleksandra",
year = "2022",
abstract = "In this study, the adsorption capacity and removal efficiency of lead using various metal-oxide materials from aqueous solution have been analyzed. Two SiO2-based materials, natural (loam) and synthesized (metal-oxide heterostructures – MOH) were investigated. The characterization of these samples was performed using X-ray powder diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR). Adsorption tests were performed in a batch system by varying the mass of tested materials. The highest adsorption capacity for Pb2+ was achieved using 5 mg of MOH (166.6 µg g-1), while the removal efficiency using the optimal mass (10 mg) of MOH and loam was 99.3 and 94.2 %, respectively. Based on the obtained results, it was concluded that the synthetic material has higher adsorption capacity and removal efficiency than the natural material for the selected ion.",
publisher = "Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings)",
title = "COMPARATIVE ANALYSIS OF Pb2+ SEPARATION USING NATURAL AND SYNTHETIC SILICATE MATERIALS",
pages = "468-465",
volume = "II",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6051"
}

Stanišić, T., Đolić, M., Ristić, M.,& Perić Grujić, A.. (2022). COMPARATIVE ANALYSIS OF Pb2+ SEPARATION USING NATURAL AND SYNTHETIC SILICATE MATERIALS. in PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings)
Society of Physical Chemists of Serbia., II, 465-468.
https://hdl.handle.net/21.15107/rcub_technorep_6051

Stanišić T, Đolić M, Ristić M, Perić Grujić A. COMPARATIVE ANALYSIS OF Pb2+ SEPARATION USING NATURAL AND SYNTHETIC SILICATE MATERIALS. in PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings). 2022;II:465-468.
https://hdl.handle.net/21.15107/rcub_technorep_6051 .

Stanišić, Tijana, Đolić, Maja, Ristić, Mirjana, Perić Grujić, Aleksandra, "COMPARATIVE ANALYSIS OF Pb2+ SEPARATION USING NATURAL AND SYNTHETIC SILICATE MATERIALS" in PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings), II (2022):465-468,
https://hdl.handle.net/21.15107/rcub_technorep_6051 .

TY  - JOUR
AU  - Stanišić, Tijana
AU  - Đolić, Maja
AU  - Ćujić, Mirjana
AU  - Ristić, Mirjana
AU  - Perić Grujić, Aleksandra
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6057
AB  - This study investigated the use of different natural raw soil materials as low-cost adsorbents for
the removal to remove As(V) and Pb(II) from aqueous systems. It deals with the effect of different soil textures, sandy loam, loam, and loamy sand, on adsorption efficiency. Fourier-transform
infrared spectroscopy (FTIR) was used to carry out the comprehensive characterization of
materials, as well as scanning electron microscopy (SEM), X-ray diffraction (XRD), and liquid
nitrogen porosimetry or the Brunauer–Emmett–Teller (BET). Studies were performed in a batch
system; the initial concentration of examined heavy metals was 100 μg·L–1, pH varied in the range
of 4–6, and the adsorbent dosage was 5–20 mg/10 mL. Sandy loam was the most efficient adsorbent for As(V) separation, with a maximum removal efficiency of 47.5%, while the loam was the
most efficient for Pb(II) separation, with a maximum removal efficiency of 94.2%. The removal
efficiency was affected mainly by the adsorbent characteristics. Performed kinetic studies revealed
two steps of adsorption for both investigated ions. Obtained results indicate that natural sorbents
used in this work present environmentally sustainable material for As(V) and Pb(II) removal,
on the one hand, and the basis for further studies on the simultaneous removal of heavy metals
from water and their reduced mobility in soil, on the other.
PB  - Desalination Publications
T2  - Desalination and Water Treatment
T1  - Disparate soil textures as a native medium for As(V) and Pb(II) separation from aqueous systems
EP  - 202
IS  - 190
VL  - 273
DO  - 10.5004/dwt.2022.28889
ER  - 

@article{
author = "Stanišić, Tijana and Đolić, Maja and Ćujić, Mirjana and Ristić, Mirjana and Perić Grujić, Aleksandra",
year = "2022",
abstract = "This study investigated the use of different natural raw soil materials as low-cost adsorbents for
the removal to remove As(V) and Pb(II) from aqueous systems. It deals with the effect of different soil textures, sandy loam, loam, and loamy sand, on adsorption efficiency. Fourier-transform
infrared spectroscopy (FTIR) was used to carry out the comprehensive characterization of
materials, as well as scanning electron microscopy (SEM), X-ray diffraction (XRD), and liquid
nitrogen porosimetry or the Brunauer–Emmett–Teller (BET). Studies were performed in a batch
system; the initial concentration of examined heavy metals was 100 μg·L–1, pH varied in the range
of 4–6, and the adsorbent dosage was 5–20 mg/10 mL. Sandy loam was the most efficient adsorbent for As(V) separation, with a maximum removal efficiency of 47.5%, while the loam was the
most efficient for Pb(II) separation, with a maximum removal efficiency of 94.2%. The removal
efficiency was affected mainly by the adsorbent characteristics. Performed kinetic studies revealed
two steps of adsorption for both investigated ions. Obtained results indicate that natural sorbents
used in this work present environmentally sustainable material for As(V) and Pb(II) removal,
on the one hand, and the basis for further studies on the simultaneous removal of heavy metals
from water and their reduced mobility in soil, on the other.",
publisher = "Desalination Publications",
journal = "Desalination and Water Treatment",
title = "Disparate soil textures as a native medium for As(V) and Pb(II) separation from aqueous systems",
pages = "202",
number = "190",
volume = "273",
doi = "10.5004/dwt.2022.28889"
}

Stanišić, T., Đolić, M., Ćujić, M., Ristić, M.,& Perić Grujić, A.. (2022). Disparate soil textures as a native medium for As(V) and Pb(II) separation from aqueous systems. in Desalination and Water Treatment
Desalination Publications., 273(190).
https://doi.org/10.5004/dwt.2022.28889

Stanišić T, Đolić M, Ćujić M, Ristić M, Perić Grujić A. Disparate soil textures as a native medium for As(V) and Pb(II) separation from aqueous systems. in Desalination and Water Treatment. 2022;273(190):null-202.
doi:10.5004/dwt.2022.28889 .

Stanišić, Tijana, Đolić, Maja, Ćujić, Mirjana, Ristić, Mirjana, Perić Grujić, Aleksandra, "Disparate soil textures as a native medium for As(V) and Pb(II) separation from aqueous systems" in Desalination and Water Treatment, 273, no. 190 (2022),
https://doi.org/10.5004/dwt.2022.28889 . .

TY  - JOUR
AU  - Mihajlovic, Snezana
AU  - Vukčević, Marija
AU  - Pejic, Biljana
AU  - Perić-Grujić, Aleksandra
AU  - Ristić, Mirjana
AU  - Trivunac, Katarina
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4991
AB  - The possibility of using waste cotton and cotton/polyester yarns to remove lead and chromium ions from polluted water was investigated in this work. Structural, morphological, and adsorption properties of yarns were determined by iodine sorption, water retention scanning electron microscopy, Fourier transform infrared spectroscopy, and streaming potential method for determination of an isoelectric point. It was found that the presence of polyester component negatively affects adsorption capacity, through the reduced porosity of cotton/polyester yarn surface, increased surface, and structural crystallinity. Relatively fast adsorption of lead and chromium ions from binary mixture onto cotton and cotton/polyester yarns follows the pseudo-second order kinetic, while equilibrium data fitted better with the Langmuir isotherm model, with maximal adsorption capacity from 259.0 to 824.7 mu g/g. Although, cotton yarn shows slightly higher maximal adsorption capacities, both cotton and cotton/polyester yarns can be utilized as cheap and highly efficient adsorbents for removal of lead and chromium ions from water.
T2  - Journal of Natural Fibers
T1  - Waste Cotton and Cotton/Polyester Yarns as Adsorbents for Removal of Lead and Chromium from Wastewater
EP  - 9873
IS  - 15
SP  - 9860
VL  - 19
DO  - 10.1080/15440478.2021.1993414
ER  - 

@article{
author = "Mihajlovic, Snezana and Vukčević, Marija and Pejic, Biljana and Perić-Grujić, Aleksandra and Ristić, Mirjana and Trivunac, Katarina",
year = "2022",
abstract = "The possibility of using waste cotton and cotton/polyester yarns to remove lead and chromium ions from polluted water was investigated in this work. Structural, morphological, and adsorption properties of yarns were determined by iodine sorption, water retention scanning electron microscopy, Fourier transform infrared spectroscopy, and streaming potential method for determination of an isoelectric point. It was found that the presence of polyester component negatively affects adsorption capacity, through the reduced porosity of cotton/polyester yarn surface, increased surface, and structural crystallinity. Relatively fast adsorption of lead and chromium ions from binary mixture onto cotton and cotton/polyester yarns follows the pseudo-second order kinetic, while equilibrium data fitted better with the Langmuir isotherm model, with maximal adsorption capacity from 259.0 to 824.7 mu g/g. Although, cotton yarn shows slightly higher maximal adsorption capacities, both cotton and cotton/polyester yarns can be utilized as cheap and highly efficient adsorbents for removal of lead and chromium ions from water.",
journal = "Journal of Natural Fibers",
title = "Waste Cotton and Cotton/Polyester Yarns as Adsorbents for Removal of Lead and Chromium from Wastewater",
pages = "9873-9860",
number = "15",
volume = "19",
doi = "10.1080/15440478.2021.1993414"
}

Mihajlovic, S., Vukčević, M., Pejic, B., Perić-Grujić, A., Ristić, M.,& Trivunac, K.. (2022). Waste Cotton and Cotton/Polyester Yarns as Adsorbents for Removal of Lead and Chromium from Wastewater. in Journal of Natural Fibers, 19(15), 9860-9873.
https://doi.org/10.1080/15440478.2021.1993414

Mihajlovic S, Vukčević M, Pejic B, Perić-Grujić A, Ristić M, Trivunac K. Waste Cotton and Cotton/Polyester Yarns as Adsorbents for Removal of Lead and Chromium from Wastewater. in Journal of Natural Fibers. 2022;19(15):9860-9873.
doi:10.1080/15440478.2021.1993414 .

Mihajlovic, Snezana, Vukčević, Marija, Pejic, Biljana, Perić-Grujić, Aleksandra, Ristić, Mirjana, Trivunac, Katarina, "Waste Cotton and Cotton/Polyester Yarns as Adsorbents for Removal of Lead and Chromium from Wastewater" in Journal of Natural Fibers, 19, no. 15 (2022):9860-9873,
https://doi.org/10.1080/15440478.2021.1993414 . .

TY  - CONF
AU  - Maletić, Marina
AU  - Lazović, Anđela
AU  - Karić, Nataša
AU  - Vukčević, Marija
AU  - Trivunac, Katarina
AU  - Ristić, Mirjana
AU  - Perić-Grujić, Aleksandra
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6059
AB  - Using two types of industrial waste materials (yarns and fly ash), adsorbents for removing heavy
metal ions from water were obtained. To improve the adsorption efficiency of cotton and cottonpolyester yarns, modification using fly ash and sodium alginate as a binder, was applied.
Characterization of materials was performed by Scanning electron microscopy and Fourier transform
infrared spectroscopy, while the concentration of lead and cadmium ions was determined using
atomic absorption spectroscopy. The modification of the material has contributed to an increase in
the adsorption efficiency of lead and cadmium by up to twice in comparis onto the unmodified
materials. It was found that the kinetics of the metal adsorption process can be better described by a
second-order pseudo model. The results showed that by combining two types of industrial waste,
cotton and cotton/polyester yarns and fly ash, highly efficient adsorbents for removing lead and
cadmium from aqueous solutions are obtained.
PB  - Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Fly ash modified waste cotton and cotton-polyester yarns for removal of heavy metals from water
EP  - 472
SP  - 469
VL  - 2
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6059
ER  - 

@conference{
author = "Maletić, Marina and Lazović, Anđela and Karić, Nataša and Vukčević, Marija and Trivunac, Katarina and Ristić, Mirjana and Perić-Grujić, Aleksandra",
year = "2022",
abstract = "Using two types of industrial waste materials (yarns and fly ash), adsorbents for removing heavy
metal ions from water were obtained. To improve the adsorption efficiency of cotton and cottonpolyester yarns, modification using fly ash and sodium alginate as a binder, was applied.
Characterization of materials was performed by Scanning electron microscopy and Fourier transform
infrared spectroscopy, while the concentration of lead and cadmium ions was determined using
atomic absorption spectroscopy. The modification of the material has contributed to an increase in
the adsorption efficiency of lead and cadmium by up to twice in comparis onto the unmodified
materials. It was found that the kinetics of the metal adsorption process can be better described by a
second-order pseudo model. The results showed that by combining two types of industrial waste,
cotton and cotton/polyester yarns and fly ash, highly efficient adsorbents for removing lead and
cadmium from aqueous solutions are obtained.",
publisher = "Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Fly ash modified waste cotton and cotton-polyester yarns for removal of heavy metals from water",
pages = "472-469",
volume = "2",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6059"
}

Maletić, M., Lazović, A., Karić, N., Vukčević, M., Trivunac, K., Ristić, M.,& Perić-Grujić, A.. (2022). Fly ash modified waste cotton and cotton-polyester yarns for removal of heavy metals from water. in PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., 2, 469-472.
https://hdl.handle.net/21.15107/rcub_technorep_6059

Maletić M, Lazović A, Karić N, Vukčević M, Trivunac K, Ristić M, Perić-Grujić A. Fly ash modified waste cotton and cotton-polyester yarns for removal of heavy metals from water. in PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2022;2:469-472.
https://hdl.handle.net/21.15107/rcub_technorep_6059 .

Maletić, Marina, Lazović, Anđela, Karić, Nataša, Vukčević, Marija, Trivunac, Katarina, Ristić, Mirjana, Perić-Grujić, Aleksandra, "Fly ash modified waste cotton and cotton-polyester yarns for removal of heavy metals from water" in PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 2 (2022):469-472,
https://hdl.handle.net/21.15107/rcub_technorep_6059 .

TY  - CONF
AU  - Vukčević, Marija
AU  - Maletić, Marina
AU  - Karić, Nataša
AU  - Pejić, Biljana
AU  - Trivunac, Katarina
AU  - Perić-Grujić, Aleksandra
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6061
AB  - Different natural fibers and yarns (hemp, flax, and cotton), obtained as a waste from textile industry,
were used for the removal of methylene blue from aqueous solution. In attempt to increase the
adsorption efficiency, examined fibers and yarn were modified by sodium hydroxide solution.
Characterization of examined samples was performed by scanning electron microscopy and Fourier
transform infrared spectroscopy. It was shown that applied modification caused the differences in the
distribution of hemicelluloses in the structure of examined fibers and fibers in yarn, inducing the
changes in morphology and surface chemistry. These changes slightly improved the adsorption
properties of hemp fibers, while in the case of cotton yarn modification had a negative effect on
methylene blue adsorption. Nevertheless, adsorption efficiency of these waste fibers and yarns highly
increase with the pH of the solution, enabling their utilization for methylene blue removal from
wastewaters.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Modification of cellulose-based waste materials for removal of methylene blue from wastewater
EP  - 476
IS  - 473
VL  - 2
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6061
ER  - 

@conference{
author = "Vukčević, Marija and Maletić, Marina and Karić, Nataša and Pejić, Biljana and Trivunac, Katarina and Perić-Grujić, Aleksandra",
year = "2022",
abstract = "Different natural fibers and yarns (hemp, flax, and cotton), obtained as a waste from textile industry,
were used for the removal of methylene blue from aqueous solution. In attempt to increase the
adsorption efficiency, examined fibers and yarn were modified by sodium hydroxide solution.
Characterization of examined samples was performed by scanning electron microscopy and Fourier
transform infrared spectroscopy. It was shown that applied modification caused the differences in the
distribution of hemicelluloses in the structure of examined fibers and fibers in yarn, inducing the
changes in morphology and surface chemistry. These changes slightly improved the adsorption
properties of hemp fibers, while in the case of cotton yarn modification had a negative effect on
methylene blue adsorption. Nevertheless, adsorption efficiency of these waste fibers and yarns highly
increase with the pH of the solution, enabling their utilization for methylene blue removal from
wastewaters.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Modification of cellulose-based waste materials for removal of methylene blue from wastewater",
pages = "476",
number = "473",
volume = "2",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6061"
}

Vukčević, M., Maletić, M., Karić, N., Pejić, B., Trivunac, K.,& Perić-Grujić, A.. (2022). Modification of cellulose-based waste materials for removal of methylene blue from wastewater. in PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Belgrade : Society of Physical Chemists of Serbia., 2(473).
https://hdl.handle.net/21.15107/rcub_technorep_6061

Vukčević M, Maletić M, Karić N, Pejić B, Trivunac K, Perić-Grujić A. Modification of cellulose-based waste materials for removal of methylene blue from wastewater. in PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2022;2(473):null-476.
https://hdl.handle.net/21.15107/rcub_technorep_6061 .

Vukčević, Marija, Maletić, Marina, Karić, Nataša, Pejić, Biljana, Trivunac, Katarina, Perić-Grujić, Aleksandra, "Modification of cellulose-based waste materials for removal of methylene blue from wastewater" in PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 2, no. 473 (2022),
https://hdl.handle.net/21.15107/rcub_technorep_6061 .

TY  - CONF
AU  - Karić, Nataša
AU  - Vukčević, Marija
AU  - Maletić, Marina
AU  - Ristić, Mirjana
AU  - Perić-Grujić, Aleksandra
AU  - Trivunac, Katarina
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6066
AB  - The objective of this study was to evaluate the adsorption efficiency of a cationic functionalized wheat starch, obtained with betaine hydrochloride and glycidyl trimethylammonium chloride by an environmentally friendly process without the use of organic solvents. Surface functional groups of samples were characterized by Fourier transform infrared spectroscopy, the morphology of the materials was examined using scanning electron microscopy, the nitrogen content was determined by elemental analysis, while UV-VIS spectroscopy and liquid chromatography-tandem mass spectrometry were used for adsorption investigation. The efficiency of obtained cationic starches to
adsorb the anionic and cationic dyes, as well as selected pharmaceuticals and pesticides was investigated. Adsorption experiments were performed in a batch system to determine the effect of contact time, initial concentration, and pH of the solution on the removal efficiency of crystal violet dye, which was chosen as the model for the detailed study of adsorption. Pseudo-first and pseudosecond order models were used to examine the adsorption kinetic, while Langmuir and Freundlich isotherm models were applied to equilibrium adsorption data. The results showed that environmentally and economically acceptable adsorbents prepared in this study could be effective in removing the examined organic pollutants.
PB  - Faculty of Technology Banja Luka
C3  - XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska
T1  - A green adsorbent based on wheat starch for removal of selective organic pollutants from aqueous solutions
EP  - 230
SP  - 225
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6066
ER  - 

@conference{
author = "Karić, Nataša and Vukčević, Marija and Maletić, Marina and Ristić, Mirjana and Perić-Grujić, Aleksandra and Trivunac, Katarina",
year = "2022",
abstract = "The objective of this study was to evaluate the adsorption efficiency of a cationic functionalized wheat starch, obtained with betaine hydrochloride and glycidyl trimethylammonium chloride by an environmentally friendly process without the use of organic solvents. Surface functional groups of samples were characterized by Fourier transform infrared spectroscopy, the morphology of the materials was examined using scanning electron microscopy, the nitrogen content was determined by elemental analysis, while UV-VIS spectroscopy and liquid chromatography-tandem mass spectrometry were used for adsorption investigation. The efficiency of obtained cationic starches to
adsorb the anionic and cationic dyes, as well as selected pharmaceuticals and pesticides was investigated. Adsorption experiments were performed in a batch system to determine the effect of contact time, initial concentration, and pH of the solution on the removal efficiency of crystal violet dye, which was chosen as the model for the detailed study of adsorption. Pseudo-first and pseudosecond order models were used to examine the adsorption kinetic, while Langmuir and Freundlich isotherm models were applied to equilibrium adsorption data. The results showed that environmentally and economically acceptable adsorbents prepared in this study could be effective in removing the examined organic pollutants.",
publisher = "Faculty of Technology Banja Luka",
journal = "XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska",
title = "A green adsorbent based on wheat starch for removal of selective organic pollutants from aqueous solutions",
pages = "230-225",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6066"
}

Karić, N., Vukčević, M., Maletić, M., Ristić, M., Perić-Grujić, A.,& Trivunac, K.. (2022). A green adsorbent based on wheat starch for removal of selective organic pollutants from aqueous solutions. in XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska
Faculty of Technology Banja Luka., 225-230.
https://hdl.handle.net/21.15107/rcub_technorep_6066

Karić N, Vukčević M, Maletić M, Ristić M, Perić-Grujić A, Trivunac K. A green adsorbent based on wheat starch for removal of selective organic pollutants from aqueous solutions. in XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska. 2022;:225-230.
https://hdl.handle.net/21.15107/rcub_technorep_6066 .

Karić, Nataša, Vukčević, Marija, Maletić, Marina, Ristić, Mirjana, Perić-Grujić, Aleksandra, Trivunac, Katarina, "A green adsorbent based on wheat starch for removal of selective organic pollutants from aqueous solutions" in XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska (2022):225-230,
https://hdl.handle.net/21.15107/rcub_technorep_6066 .