TY  - JOUR
AU  - Vukčević, Marija
AU  - Maletić, Marina
AU  - Pejić, Biljana
AU  - Kalijadis, Ana
AU  - Kostić, Mirjana
AU  - Trivunac, Katarina
AU  - Perić Grujić, Aleksandra
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7448
AB  - In an attempt to reuse fibrous textile waste and, at the same time, to address dye pollution
in textile wastewater, waste cotton-based yarn was utilized as a cheap and sustainable adsorbent, as
well as a row material for carbon adsorbent production. Unmodified yarn and cotton-based carbon
adsorbents were used as adsorbents for dye removal from water. Cotton and cotton/polyester yarn
samples underwent thermal modification through carbonization followed by chemical activation
with KOH. Various techniques, including scanning electron microscopy, Fourier transform infrared
spectroscopy, nitrogen adsorption–desorption isotherms, and surface charge determination, were
employed to analyze the morphological and surface characteristics of the cotton-based adsorbents.
Adsorption properties were evaluated by testing the removal of selected cationic and anionic dyes
from water. The impact of temperature, initial pH and concentration of the dye solution, and
contact time on adsorption were investigated, and experimentally obtained data were analyzed using
theoretical models. While carbonization alone did not significantly enhance adsorption properties,
activated samples exhibited high efficacy in removing both cationic and anionic dyes from water.
Despite the negative influence of the polyester component in the carbon precursor on the efficiency
of activated samples in removing methyl orange, the results indicated that activated cotton and
cotton/polyester yarn could be used to prepare highly efficient adsorbents for the rapid removal of
methylene blue from real wastewater samples.
PB  - MDPI
T2  - Sustainability
T1  - Cellulose-Based Waste in a Close Loop as an Adsorbent for Removing Dyes from Textile Industry Wastewater
IS  - 9
SP  - 3660
VL  - 16
DO  - 10.3390/su16093660
ER  - 

@article{
author = "Vukčević, Marija and Maletić, Marina and Pejić, Biljana and Kalijadis, Ana and Kostić, Mirjana and Trivunac, Katarina and Perić Grujić, Aleksandra",
year = "2024",
abstract = "In an attempt to reuse fibrous textile waste and, at the same time, to address dye pollution
in textile wastewater, waste cotton-based yarn was utilized as a cheap and sustainable adsorbent, as
well as a row material for carbon adsorbent production. Unmodified yarn and cotton-based carbon
adsorbents were used as adsorbents for dye removal from water. Cotton and cotton/polyester yarn
samples underwent thermal modification through carbonization followed by chemical activation
with KOH. Various techniques, including scanning electron microscopy, Fourier transform infrared
spectroscopy, nitrogen adsorption–desorption isotherms, and surface charge determination, were
employed to analyze the morphological and surface characteristics of the cotton-based adsorbents.
Adsorption properties were evaluated by testing the removal of selected cationic and anionic dyes
from water. The impact of temperature, initial pH and concentration of the dye solution, and
contact time on adsorption were investigated, and experimentally obtained data were analyzed using
theoretical models. While carbonization alone did not significantly enhance adsorption properties,
activated samples exhibited high efficacy in removing both cationic and anionic dyes from water.
Despite the negative influence of the polyester component in the carbon precursor on the efficiency
of activated samples in removing methyl orange, the results indicated that activated cotton and
cotton/polyester yarn could be used to prepare highly efficient adsorbents for the rapid removal of
methylene blue from real wastewater samples.",
publisher = "MDPI",
journal = "Sustainability",
title = "Cellulose-Based Waste in a Close Loop as an Adsorbent for Removing Dyes from Textile Industry Wastewater",
number = "9",
pages = "3660",
volume = "16",
doi = "10.3390/su16093660"
}

Vukčević, M., Maletić, M., Pejić, B., Kalijadis, A., Kostić, M., Trivunac, K.,& Perić Grujić, A.. (2024). Cellulose-Based Waste in a Close Loop as an Adsorbent for Removing Dyes from Textile Industry Wastewater. in Sustainability
MDPI., 16(9), 3660.
https://doi.org/10.3390/su16093660

Vukčević M, Maletić M, Pejić B, Kalijadis A, Kostić M, Trivunac K, Perić Grujić A. Cellulose-Based Waste in a Close Loop as an Adsorbent for Removing Dyes from Textile Industry Wastewater. in Sustainability. 2024;16(9):3660.
doi:10.3390/su16093660 .

Vukčević, Marija, Maletić, Marina, Pejić, Biljana, Kalijadis, Ana, Kostić, Mirjana, Trivunac, Katarina, Perić Grujić, Aleksandra, "Cellulose-Based Waste in a Close Loop as an Adsorbent for Removing Dyes from Textile Industry Wastewater" in Sustainability, 16, no. 9 (2024):3660,
https://doi.org/10.3390/su16093660 . .

TY  - JOUR
AU  - Maletić, Marina M.
AU  - Kalijadis, Ana M.
AU  - Lazović, Vladimir
AU  - Trifunović, Snežana
AU  - Babić, Biljana M.
AU  - Dapčević, Aleksandra
AU  - Kovač, Janez
AU  - Vukčević, Marija M.
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5963
AB  - Abstract: N-doped TiO2/carbon composites (TiO2/CN) with different nitrogen content, were obtained starting from titanium isopropoxide and glucose, and by varying the amount of melamine, added to starting reaction mixture. For comparison, an undoped sample (TiO2/C) was also prepared. Structural and surface characteristics were determined through scanning electron microscopy, thermogravimetric analysis, elemental analysis, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction and nitrogen adsorption–desorption isotherms. The photocatalytic activity of TiO2/CN composites was examined via photocatalytic degradation of methylene blue and multiclass pharmaceuticals from water solution. It was found that N doping of TiO2/carbon composites induced changes in structural and surface characteristics of TiO2/CN composites, improving their adsorption, but decreasing photocatalytic efficiency. Nevertheless, TiO2/CN0.05 composite obtained by the hydrothermal synthesis in the presence of glucose and 0.05 g melamine showed the highest efficiency for removing selected pharmaceuticals and methylene blue from aqueous solutions through the combined processes of adsorption in the dark, and photocatalytic degradation under UV and visible irradiation.
T2  - Journal of the Serbian Chemical Society
T1  - Influence of N doping on structural and photocatalytic properties of hydrothermally synthesized TiO2/carbon composites
EP  - 197
IS  - 2
SP  - 183
VL  - 88
DO  - 10.2298/JSC220608079M
ER  - 

@article{
author = "Maletić, Marina M. and Kalijadis, Ana M. and Lazović, Vladimir and Trifunović, Snežana and Babić, Biljana M. and Dapčević, Aleksandra and Kovač, Janez and Vukčević, Marija M.",
year = "2023",
abstract = "Abstract: N-doped TiO2/carbon composites (TiO2/CN) with different nitrogen content, were obtained starting from titanium isopropoxide and glucose, and by varying the amount of melamine, added to starting reaction mixture. For comparison, an undoped sample (TiO2/C) was also prepared. Structural and surface characteristics were determined through scanning electron microscopy, thermogravimetric analysis, elemental analysis, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction and nitrogen adsorption–desorption isotherms. The photocatalytic activity of TiO2/CN composites was examined via photocatalytic degradation of methylene blue and multiclass pharmaceuticals from water solution. It was found that N doping of TiO2/carbon composites induced changes in structural and surface characteristics of TiO2/CN composites, improving their adsorption, but decreasing photocatalytic efficiency. Nevertheless, TiO2/CN0.05 composite obtained by the hydrothermal synthesis in the presence of glucose and 0.05 g melamine showed the highest efficiency for removing selected pharmaceuticals and methylene blue from aqueous solutions through the combined processes of adsorption in the dark, and photocatalytic degradation under UV and visible irradiation.",
journal = "Journal of the Serbian Chemical Society",
title = "Influence of N doping on structural and photocatalytic properties of hydrothermally synthesized TiO2/carbon composites",
pages = "197-183",
number = "2",
volume = "88",
doi = "10.2298/JSC220608079M"
}

Maletić, M. M., Kalijadis, A. M., Lazović, V., Trifunović, S., Babić, B. M., Dapčević, A., Kovač, J.,& Vukčević, M. M.. (2023). Influence of N doping on structural and photocatalytic properties of hydrothermally synthesized TiO2/carbon composites. in Journal of the Serbian Chemical Society, 88(2), 183-197.
https://doi.org/10.2298/JSC220608079M

Maletić MM, Kalijadis AM, Lazović V, Trifunović S, Babić BM, Dapčević A, Kovač J, Vukčević MM. Influence of N doping on structural and photocatalytic properties of hydrothermally synthesized TiO2/carbon composites. in Journal of the Serbian Chemical Society. 2023;88(2):183-197.
doi:10.2298/JSC220608079M .

Maletić, Marina M., Kalijadis, Ana M., Lazović, Vladimir, Trifunović, Snežana, Babić, Biljana M., Dapčević, Aleksandra, Kovač, Janez, Vukčević, Marija M., "Influence of N doping on structural and photocatalytic properties of hydrothermally synthesized TiO2/carbon composites" in Journal of the Serbian Chemical Society, 88, no. 2 (2023):183-197,
https://doi.org/10.2298/JSC220608079M . .

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  - Vukčević, Marija
AU  - Pejić, Biljana
AU  - Maletić, Marina
AU  - Trivunac, Katarina
AU  - Kostić, Mirjana
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6639
AB  - Frequent changes in clothing fashion trends and the furniture industry have led to the excessive consumption of textiles to meet human needs. This leads to an increase in the production and finishing of textile materials, and the generation of large amounts of waste, making the textile industry one of the main polluters of the environment nowadays. Therefore, there are concerns about the reckless disposal of chemical and solid textile waste (natural or synthetic yarns, fibers, pieces of clothing, etc.) which can cause serious soil, water, and air pollution. To reduce the amount of waste generated in the industry, and preserve the environment and human health, it is necessary to apply modern trends of sustainable development. These trends imply the simultaneous satisfaction of the principles of ecological efficiency, social responsibility, and economic profitability. In this way, waste from the textile industry becomes a resource of the circular economy system with the aim of realizing sustainable development. In this work, waste materials of lignocellulosic, cellulosic, and synthetic origin were used as biosorbents for the purification of water polluted by organic and inorganic pollutants. This kind of waste utilization represents a special way of recycling, which is one of the most important links in the chain of sustainable development.
AB  - Česte promene modnih trendova u odevnoj industriji, kao i industriji nameštaja, dovode do prekomerne potrošnje tekstila. Ovo direktno utiče na povećanje proizvodnje i dorade tekstilnih materijala, kao i stvaranja velike količine otpada, što tekstilnu industriju čini jednim od najvećih zagađivača životne sredine. Poseban problem predstavlja odlaganje hemijskog i čvrstog tekstilnog otpada (prirodna i sintetička prediva, vlakna, komadi odeće itd.) koji mogu izazvati ozbiljno zagađenje zemljišta, vode i vazduha. U cilju smanjenja količine otpada koji se generiše u industriji, a samim tim i očuvanja životne sredine i zdravlja ljudi, primenjuju se moderni trendovi održivog razvoja, koji podrazumeva istovremeno zadovoljenje principa ekološke efikasnosti, društvene odgovornosti i ekonomske isplativosti. Na taj način otpad iz tekstilne industrije postaje resurs sistema cirkularne ekonomije sa ciljem realizacije održivog razvoja. U ovom radu, otpadni materijali lignoceluloznog, celuloznog i sintetičkog porekla korišćeni su kao biosorbenti za prečišćavanje vode zagađene organskim i neorganskim polutantima. Ovakvo korišćenje otpada predstavlja specijalni vid reciklaže koja je jedna od najvažnijih karika u lancu održivog razvoja.
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  - Contribution to the circular economy through the utilization of fibrous textile waste as biosorbents for water purification
T1  - Doprinos cirkularnoj ekonomiji kroz korišćenje vlaknastog tekstilnog otpada kao biosorbenata za prečIšćavanje vode
EP  - 26
SP  - 17
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6639
ER  - 

@conference{
author = "Vukčević, Marija and Pejić, Biljana and Maletić, Marina and Trivunac, Katarina and Kostić, Mirjana",
year = "2023",
abstract = "Frequent changes in clothing fashion trends and the furniture industry have led to the excessive consumption of textiles to meet human needs. This leads to an increase in the production and finishing of textile materials, and the generation of large amounts of waste, making the textile industry one of the main polluters of the environment nowadays. Therefore, there are concerns about the reckless disposal of chemical and solid textile waste (natural or synthetic yarns, fibers, pieces of clothing, etc.) which can cause serious soil, water, and air pollution. To reduce the amount of waste generated in the industry, and preserve the environment and human health, it is necessary to apply modern trends of sustainable development. These trends imply the simultaneous satisfaction of the principles of ecological efficiency, social responsibility, and economic profitability. In this way, waste from the textile industry becomes a resource of the circular economy system with the aim of realizing sustainable development. In this work, waste materials of lignocellulosic, cellulosic, and synthetic origin were used as biosorbents for the purification of water polluted by organic and inorganic pollutants. This kind of waste utilization represents a special way of recycling, which is one of the most important links in the chain of sustainable development., Česte promene modnih trendova u odevnoj industriji, kao i industriji nameštaja, dovode do prekomerne potrošnje tekstila. Ovo direktno utiče na povećanje proizvodnje i dorade tekstilnih materijala, kao i stvaranja velike količine otpada, što tekstilnu industriju čini jednim od najvećih zagađivača životne sredine. Poseban problem predstavlja odlaganje hemijskog i čvrstog tekstilnog otpada (prirodna i sintetička prediva, vlakna, komadi odeće itd.) koji mogu izazvati ozbiljno zagađenje zemljišta, vode i vazduha. U cilju smanjenja količine otpada koji se generiše u industriji, a samim tim i očuvanja životne sredine i zdravlja ljudi, primenjuju se moderni trendovi održivog razvoja, koji podrazumeva istovremeno zadovoljenje principa ekološke efikasnosti, društvene odgovornosti i ekonomske isplativosti. Na taj način otpad iz tekstilne industrije postaje resurs sistema cirkularne ekonomije sa ciljem realizacije održivog razvoja. U ovom radu, otpadni materijali lignoceluloznog, celuloznog i sintetičkog porekla korišćeni su kao biosorbenti za prečišćavanje vode zagađene organskim i neorganskim polutantima. Ovakvo korišćenje otpada predstavlja specijalni vid reciklaže koja je jedna od najvažnijih karika u lancu održivog razvoja.",
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 = "Contribution to the circular economy through the utilization of fibrous textile waste as biosorbents for water purification, Doprinos cirkularnoj ekonomiji kroz korišćenje vlaknastog tekstilnog otpada kao biosorbenata za prečIšćavanje vode",
pages = "26-17",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6639"
}

Vukčević, M., Pejić, B., Maletić, M., Trivunac, K.,& Kostić, M.. (2023). Contribution to the circular economy through the utilization of fibrous textile waste as biosorbents for water purification. 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., 17-26.
https://hdl.handle.net/21.15107/rcub_technorep_6639

Vukčević M, Pejić B, Maletić M, Trivunac K, Kostić M. Contribution to the circular economy through the utilization of fibrous textile waste as biosorbents for water purification. in Proceedings / VI International Scientific Conference Contemporary Trends and Innovations in the Textile Industry, CT&ITI, Belgrade, 14-15th September. 2023;:17-26.
https://hdl.handle.net/21.15107/rcub_technorep_6639 .

Vukčević, Marija, Pejić, Biljana, Maletić, Marina, Trivunac, Katarina, Kostić, Mirjana, "Contribution to the circular economy through the utilization of fibrous textile waste as biosorbents for water purification" in Proceedings / VI International Scientific Conference Contemporary Trends and Innovations in the Textile Industry, CT&ITI, Belgrade, 14-15th September (2023):17-26,
https://hdl.handle.net/21.15107/rcub_technorep_6639 .

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  - 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  - 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  - 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  - 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  - Mladenović Nikolić, Nataša
AU  - Knežević, Sanja
AU  - Ivanović, Marija
AU  - Mirković, Miljana
AU  - Maletić, Marina
AU  - Kljajević, Ljiljana
AU  - Trivunac, Katarina
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6641
AB  - The aim of this paper is to show the possibility of using waste materials, blends of (wood ash, fly ash, from thermal power plant, and metakaolin) for the production of alkali activated materials that can be used to purify wastewater from different kinds of pollutants such as heavy metals. Heavy metals are toxic, especially cadmium, so they must be removed from wastewater to prevent or minimize contact with the environment and humans. The synthesis of the alkali activated materials was performed by mixing solid precursors with a liquid alkali activator. Two- and three-component systems of wood ash, fly ash and metakaolin (wood ash/fly ash, wood ash/metakaolin, fly ash/metakaolin and wood ash/fly ash/metakaolin) were used as precursor materials. The alkali activator solution was a mixture of sodium silicate solution and sodium hydroxide solution of concentrations (6M and 12M). The characterization of alkali activated materials was studied by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, Scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM/EDS). XRD measurements of investigated samples showed a characteristic halo between 18 and 35º 2 with a dominant crystal phase of quartz. FTIR spectroscopy showed that the main vibration band of all investigated samples appeared between 1037-996 cm-1, and corresponds to Si-O-Si/Si-O-Al bands. SEM/EDS analysis was used to determine the microstructure of the samples. The adsorption efficiency of the investigated alkali activated materials for removing cadmium ions from aqueous solution was tested under different conditions: initial concentration of cadmium ions in the range of 20-100 mg/l, pH values from 3 to 7 and mass of adsorbents from 0.02-0.05 g.
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  - Structural Characteristics and Adsorption Properties of Alkali Activated Blends Ashes/Metakaolin
SP  - 29
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6641
ER  - 

@conference{
author = "Mladenović Nikolić, Nataša and Knežević, Sanja and Ivanović, Marija and Mirković, Miljana and Maletić, Marina and Kljajević, Ljiljana and Trivunac, Katarina",
year = "2023",
abstract = "The aim of this paper is to show the possibility of using waste materials, blends of (wood ash, fly ash, from thermal power plant, and metakaolin) for the production of alkali activated materials that can be used to purify wastewater from different kinds of pollutants such as heavy metals. Heavy metals are toxic, especially cadmium, so they must be removed from wastewater to prevent or minimize contact with the environment and humans. The synthesis of the alkali activated materials was performed by mixing solid precursors with a liquid alkali activator. Two- and three-component systems of wood ash, fly ash and metakaolin (wood ash/fly ash, wood ash/metakaolin, fly ash/metakaolin and wood ash/fly ash/metakaolin) were used as precursor materials. The alkali activator solution was a mixture of sodium silicate solution and sodium hydroxide solution of concentrations (6M and 12M). The characterization of alkali activated materials was studied by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, Scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM/EDS). XRD measurements of investigated samples showed a characteristic halo between 18 and 35º 2 with a dominant crystal phase of quartz. FTIR spectroscopy showed that the main vibration band of all investigated samples appeared between 1037-996 cm-1, and corresponds to Si-O-Si/Si-O-Al bands. SEM/EDS analysis was used to determine the microstructure of the samples. The adsorption efficiency of the investigated alkali activated materials for removing cadmium ions from aqueous solution was tested under different conditions: initial concentration of cadmium ions in the range of 20-100 mg/l, pH values from 3 to 7 and mass of adsorbents from 0.02-0.05 g.",
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 = "Structural Characteristics and Adsorption Properties of Alkali Activated Blends Ashes/Metakaolin",
pages = "29",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6641"
}

Mladenović Nikolić, N., Knežević, S., Ivanović, M., Mirković, M., Maletić, M., Kljajević, L.,& Trivunac, K.. (2023). Structural Characteristics and Adsorption Properties of Alkali Activated Blends Ashes/Metakaolin. 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., 29.
https://hdl.handle.net/21.15107/rcub_technorep_6641

Mladenović Nikolić N, Knežević S, Ivanović M, Mirković M, Maletić M, Kljajević L, Trivunac K. Structural Characteristics and Adsorption Properties of Alkali Activated Blends Ashes/Metakaolin. in Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia. 2023;:29.
https://hdl.handle.net/21.15107/rcub_technorep_6641 .

Mladenović Nikolić, Nataša, Knežević, Sanja, Ivanović, Marija, Mirković, Miljana, Maletić, Marina, Kljajević, Ljiljana, Trivunac, Katarina, "Structural Characteristics and Adsorption Properties of Alkali Activated Blends Ashes/Metakaolin" in Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia (2023):29,
https://hdl.handle.net/21.15107/rcub_technorep_6641 .

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  - 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  - 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  - 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  - Vukčević, Marija
AU  - Maletić, Marina
AU  - Đurkić, Tatjana
AU  - Babić, Biljana
AU  - Kalijadis, Ana
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5010
AB  - Carbonaceous solid-phase extraction (SPE) sorbent, efficient in isol-ation and enrichment of multiclass pesticides and pharmaceuticals from water, was synthesized starting from cheap waste beech sawdust and using KOH as the activated agent. The first step in carbon material preparation was hydrother-mal carbonization of the waste beech sawdust. Following hydrothermal treat-ment, the obtained material was activated, using different amounts of KOH. It was found that applied activation leads to changes in material structure, an inc-rease in specific surface area, and a decrease in the number of surface oxygen groups compared to carbonized sample. SPE procedure of multiclass pesticides and pharmaceuticals from water using activated carbonized beech sawdust (AcSD) was optimized by selecting the appropriate elution solvents, the sample pH, and the sample volume to obtain the highest enrichment efficiency. The optimized SPE procedure was applied for water analysis using different AcSD samples as a sorbent for analyte preconcentration. Activated carbon sorbent, obtained with the highest amount of KOH, showed the highest recoveries reg-arding the most analytes, which were comparable with the recoveries obtained by commercial cartridges.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Beech sawdust based adsorbents for solid-phase extraction of pesticides and pharmaceuticals
EP  - 217
IS  - 2
SP  - 205
VL  - 87
DO  - 10.2298/JSC210614051V
ER  - 

@article{
author = "Vukčević, Marija and Maletić, Marina and Đurkić, Tatjana and Babić, Biljana and Kalijadis, Ana",
year = "2022",
abstract = "Carbonaceous solid-phase extraction (SPE) sorbent, efficient in isol-ation and enrichment of multiclass pesticides and pharmaceuticals from water, was synthesized starting from cheap waste beech sawdust and using KOH as the activated agent. The first step in carbon material preparation was hydrother-mal carbonization of the waste beech sawdust. Following hydrothermal treat-ment, the obtained material was activated, using different amounts of KOH. It was found that applied activation leads to changes in material structure, an inc-rease in specific surface area, and a decrease in the number of surface oxygen groups compared to carbonized sample. SPE procedure of multiclass pesticides and pharmaceuticals from water using activated carbonized beech sawdust (AcSD) was optimized by selecting the appropriate elution solvents, the sample pH, and the sample volume to obtain the highest enrichment efficiency. The optimized SPE procedure was applied for water analysis using different AcSD samples as a sorbent for analyte preconcentration. Activated carbon sorbent, obtained with the highest amount of KOH, showed the highest recoveries reg-arding the most analytes, which were comparable with the recoveries obtained by commercial cartridges.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Beech sawdust based adsorbents for solid-phase extraction of pesticides and pharmaceuticals",
pages = "217-205",
number = "2",
volume = "87",
doi = "10.2298/JSC210614051V"
}

Vukčević, M., Maletić, M., Đurkić, T., Babić, B.,& Kalijadis, A.. (2022). Beech sawdust based adsorbents for solid-phase extraction of pesticides and pharmaceuticals. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 87(2), 205-217.
https://doi.org/10.2298/JSC210614051V

Vukčević M, Maletić M, Đurkić T, Babić B, Kalijadis A. Beech sawdust based adsorbents for solid-phase extraction of pesticides and pharmaceuticals. in Journal of the Serbian Chemical Society. 2022;87(2):205-217.
doi:10.2298/JSC210614051V .

Vukčević, Marija, Maletić, Marina, Đurkić, Tatjana, Babić, Biljana, Kalijadis, Ana, "Beech sawdust based adsorbents for solid-phase extraction of pesticides and pharmaceuticals" in Journal of the Serbian Chemical Society, 87, no. 2 (2022):205-217,
https://doi.org/10.2298/JSC210614051V . .

TY  - JOUR
AU  - Prokić, Danijela
AU  - Vukčević, Marija
AU  - Mitrović, Angelina
AU  - Maletić, Marina
AU  - Kalijadis, Ana
AU  - Janković-Častvan, Ivona
AU  - Đurkić, Tatjana
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5016
AB  - Carbon materials of different structural and textural properties (multi-walled carbon nanotubes, carbon cryogel, and carbonized hydrothermal carbon) were used as adsorbents for the removal of estrone, 17 beta-estradiol, and 17 alpha-ethinylestradiol from aqueous solutions. Chemical modification and/or activation were applied to alter surface characteristics and to increase the adsorption and desorption efficiency of carbon materials. Surfaces of treated and untreated carbon materials were characterized through the examination of the textural properties, the nature of surface functional groups, and surface acidity. It was found that the adsorption capacity of tested carbon materials is not directly proportional to the specific surface area and the content of surface oxygen groups. However, a high ratio of surface mesoporosity affected the adsorption process most prominently, by increasing adsorption capacity and the rate of the adsorption process. Adsorption of estrone, 17 beta-estradiol, and 17 alpha-ethinylestradiol followed pseudo-second-order kinetic model, while the equilibrium adsorption data were best fitted with the Langmuir isotherm model. Calculated mean adsorption energy values, along with the thermodynamic parameters, indicated that removal of selected hormones was dominated by the physisorption mechanism. High values of adsorption efficiency (88-100 %) and Langmuir adsorption capacities (29.45-194.7 mg/g) imply that examined materials, especially mesoporous carbon cryogel and multi-walled carbon nanotubes, can be used as powerful adsorbents for relatively fast removal of estrogen hormones from water.
T2  - Environmental Science and Pollution Research
T1  - Adsorption of estrone, 17 beta-estradiol, and 17 alpha-ethinylestradiol from water onto modified multi-walled carbon nanotubes, carbon cryogel, and carbonized hydrothermal carbon
EP  - 4445
IS  - 3
SP  - 4431
VL  - 29
DO  - 10.1007/s11356-021-15970-4
ER  - 

@article{
author = "Prokić, Danijela and Vukčević, Marija and Mitrović, Angelina and Maletić, Marina and Kalijadis, Ana and Janković-Častvan, Ivona and Đurkić, Tatjana",
year = "2022",
abstract = "Carbon materials of different structural and textural properties (multi-walled carbon nanotubes, carbon cryogel, and carbonized hydrothermal carbon) were used as adsorbents for the removal of estrone, 17 beta-estradiol, and 17 alpha-ethinylestradiol from aqueous solutions. Chemical modification and/or activation were applied to alter surface characteristics and to increase the adsorption and desorption efficiency of carbon materials. Surfaces of treated and untreated carbon materials were characterized through the examination of the textural properties, the nature of surface functional groups, and surface acidity. It was found that the adsorption capacity of tested carbon materials is not directly proportional to the specific surface area and the content of surface oxygen groups. However, a high ratio of surface mesoporosity affected the adsorption process most prominently, by increasing adsorption capacity and the rate of the adsorption process. Adsorption of estrone, 17 beta-estradiol, and 17 alpha-ethinylestradiol followed pseudo-second-order kinetic model, while the equilibrium adsorption data were best fitted with the Langmuir isotherm model. Calculated mean adsorption energy values, along with the thermodynamic parameters, indicated that removal of selected hormones was dominated by the physisorption mechanism. High values of adsorption efficiency (88-100 %) and Langmuir adsorption capacities (29.45-194.7 mg/g) imply that examined materials, especially mesoporous carbon cryogel and multi-walled carbon nanotubes, can be used as powerful adsorbents for relatively fast removal of estrogen hormones from water.",
journal = "Environmental Science and Pollution Research",
title = "Adsorption of estrone, 17 beta-estradiol, and 17 alpha-ethinylestradiol from water onto modified multi-walled carbon nanotubes, carbon cryogel, and carbonized hydrothermal carbon",
pages = "4445-4431",
number = "3",
volume = "29",
doi = "10.1007/s11356-021-15970-4"
}

Prokić, D., Vukčević, M., Mitrović, A., Maletić, M., Kalijadis, A., Janković-Častvan, I.,& Đurkić, T.. (2022). Adsorption of estrone, 17 beta-estradiol, and 17 alpha-ethinylestradiol from water onto modified multi-walled carbon nanotubes, carbon cryogel, and carbonized hydrothermal carbon. in Environmental Science and Pollution Research, 29(3), 4431-4445.
https://doi.org/10.1007/s11356-021-15970-4

Prokić D, Vukčević M, Mitrović A, Maletić M, Kalijadis A, Janković-Častvan I, Đurkić T. Adsorption of estrone, 17 beta-estradiol, and 17 alpha-ethinylestradiol from water onto modified multi-walled carbon nanotubes, carbon cryogel, and carbonized hydrothermal carbon. in Environmental Science and Pollution Research. 2022;29(3):4431-4445.
doi:10.1007/s11356-021-15970-4 .

Prokić, Danijela, Vukčević, Marija, Mitrović, Angelina, Maletić, Marina, Kalijadis, Ana, Janković-Častvan, Ivona, Đurkić, Tatjana, "Adsorption of estrone, 17 beta-estradiol, and 17 alpha-ethinylestradiol from water onto modified multi-walled carbon nanotubes, carbon cryogel, and carbonized hydrothermal carbon" in Environmental Science and Pollution Research, 29, no. 3 (2022):4431-4445,
https://doi.org/10.1007/s11356-021-15970-4 . .

TY  - JOUR
AU  - Kalijadis, Ana
AU  - Maletić, Marina M.
AU  - Bjelajac, Anđelika Z.
AU  - Babić, Biljana M.
AU  - Minović Arsić, Tamara Z.
AU  - Vukčević, Marija M.
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5170
AB  - In this study, the influence of boron doping on structural and surface properties of carbon material synthesized by a hydrothermal method was investigated, and the obtained results were compared with the previously published influence that boron has on characteristics of carbonized boron-doped hydrothermal carbons (CHTCB). Hydrothermal carbons doped with boron (HTCB) were obtained by the hydrothermal synthesis of glucose solutions with different nominal concentrations of boric acid. It was found that glucose based hydrothermal carbon does not have developed porosity, and the presence of boron in their structure has insignificant influence on it. On the contrary, additional carbonization increases the specific surface area of the undoped sample, while an increase in boron content drastically decreases the specific surface area. Boron doping leads to a decrease in the amount of surface oxygen groups, for both, hydrothermally synthesized and additionally carbonized materials. Raman analysis showed that the boron content does not affect a structural arrangement of the HTCB samples, and Raman structural parameters show a higher degree of disorder, compared to the CHTCB samples. Comparison of structural and surface characteristics of hydrothermal carbons and carbonized materials contributes to the study of the so far, insufficiently clarified influence that boron incorporation has on the material characteristics. © 2022 Serbian Chemical Society. All rights reserved.
T2  - Journal of the Serbian Chemical Society
T1  - Influence of boron doping on characteristics of glucose-based hydrothermal carbons
EP  - 760
IS  - 6
SP  - 749
VL  - 87
DO  - 10.2298/JSC211011001K
ER  - 

@article{
author = "Kalijadis, Ana and Maletić, Marina M. and Bjelajac, Anđelika Z. and Babić, Biljana M. and Minović Arsić, Tamara Z. and Vukčević, Marija M.",
year = "2022",
abstract = "In this study, the influence of boron doping on structural and surface properties of carbon material synthesized by a hydrothermal method was investigated, and the obtained results were compared with the previously published influence that boron has on characteristics of carbonized boron-doped hydrothermal carbons (CHTCB). Hydrothermal carbons doped with boron (HTCB) were obtained by the hydrothermal synthesis of glucose solutions with different nominal concentrations of boric acid. It was found that glucose based hydrothermal carbon does not have developed porosity, and the presence of boron in their structure has insignificant influence on it. On the contrary, additional carbonization increases the specific surface area of the undoped sample, while an increase in boron content drastically decreases the specific surface area. Boron doping leads to a decrease in the amount of surface oxygen groups, for both, hydrothermally synthesized and additionally carbonized materials. Raman analysis showed that the boron content does not affect a structural arrangement of the HTCB samples, and Raman structural parameters show a higher degree of disorder, compared to the CHTCB samples. Comparison of structural and surface characteristics of hydrothermal carbons and carbonized materials contributes to the study of the so far, insufficiently clarified influence that boron incorporation has on the material characteristics. © 2022 Serbian Chemical Society. All rights reserved.",
journal = "Journal of the Serbian Chemical Society",
title = "Influence of boron doping on characteristics of glucose-based hydrothermal carbons",
pages = "760-749",
number = "6",
volume = "87",
doi = "10.2298/JSC211011001K"
}

Kalijadis, A., Maletić, M. M., Bjelajac, A. Z., Babić, B. M., Minović Arsić, T. Z.,& Vukčević, M. M.. (2022). Influence of boron doping on characteristics of glucose-based hydrothermal carbons. in Journal of the Serbian Chemical Society, 87(6), 749-760.
https://doi.org/10.2298/JSC211011001K

Kalijadis A, Maletić MM, Bjelajac AZ, Babić BM, Minović Arsić TZ, Vukčević MM. Influence of boron doping on characteristics of glucose-based hydrothermal carbons. in Journal of the Serbian Chemical Society. 2022;87(6):749-760.
doi:10.2298/JSC211011001K .

Kalijadis, Ana, Maletić, Marina M., Bjelajac, Anđelika Z., Babić, Biljana M., Minović Arsić, Tamara Z., Vukčević, Marija M., "Influence of boron doping on characteristics of glucose-based hydrothermal carbons" in Journal of the Serbian Chemical Society, 87, no. 6 (2022):749-760,
https://doi.org/10.2298/JSC211011001K . .

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  - Trivunac, Katarina
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6063
AB  - Researches in the field of nanotechnology indicate the possibility of the development and application
of bionanocomposites based on clay minerals and biopolymers as promising materials for the removal
of pollutants from contaminated water. Therefore, this study is based on an examination of the effect
of intercalation of starch or cationic starch with kaolin clay or diatomaceous earth on the adsorption
properties of the obtained materials for the removal of anionic and cationic dyes from aqueous
solutions. Structural characterization of the obtained materials was performed by Fourier transform
infrared spectroscopy while the morphology of the samples was determined by Scanning electron
microscopy. The removal efficiency of methyl orange and crystal violet dyes was tested in a batch
system, while the dye concentration after the adsorption process was determined by UV-Vis
spectrophotometry. It was found that modification of cationic starch with clay and diatomaceous earth
improved the efficiency for removing crystal violet dye from an aqueous solution.
PB  - Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - The effect of starch modification on the dye adsorption efficiency
EP  - 480
SP  - 477
VL  - 2
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6063
ER  - 

@conference{
author = "Karić, Nataša and Vukčević, Marija and Maletić, Marina and Ristić, Mirjana and Trivunac, Katarina",
year = "2022",
abstract = "Researches in the field of nanotechnology indicate the possibility of the development and application
of bionanocomposites based on clay minerals and biopolymers as promising materials for the removal
of pollutants from contaminated water. Therefore, this study is based on an examination of the effect
of intercalation of starch or cationic starch with kaolin clay or diatomaceous earth on the adsorption
properties of the obtained materials for the removal of anionic and cationic dyes from aqueous
solutions. Structural characterization of the obtained materials was performed by Fourier transform
infrared spectroscopy while the morphology of the samples was determined by Scanning electron
microscopy. The removal efficiency of methyl orange and crystal violet dyes was tested in a batch
system, while the dye concentration after the adsorption process was determined by UV-Vis
spectrophotometry. It was found that modification of cationic starch with clay and diatomaceous earth
improved the efficiency for removing crystal violet dye from an aqueous solution.",
publisher = "Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "The effect of starch modification on the dye adsorption efficiency",
pages = "480-477",
volume = "2",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6063"
}

Karić, N., Vukčević, M., Maletić, M., Ristić, M.,& Trivunac, K.. (2022). The effect of starch modification on the dye adsorption efficiency. in PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., 2, 477-480.
https://hdl.handle.net/21.15107/rcub_technorep_6063

Karić N, Vukčević M, Maletić M, Ristić M, Trivunac K. The effect of starch modification on the dye adsorption efficiency. in PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2022;2:477-480.
https://hdl.handle.net/21.15107/rcub_technorep_6063 .

Karić, Nataša, Vukčević, Marija, Maletić, Marina, Ristić, Mirjana, Trivunac, Katarina, "The effect of starch modification on the dye adsorption efficiency" in PHYSICAL CHEMISTRY 2022, 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 2 (2022):477-480,
https://hdl.handle.net/21.15107/rcub_technorep_6063 .

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 .

TY  - CONF
AU  - Karić, Nataša
AU  - Živojinović, Sara
AU  - Vukčević, Marija
AU  - Maletić, Marina
AU  - Perić-Grujić, Aleksandra
AU  - Trivunac, Katarina
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6067
AB  - As coal combustion in thermal power plants generates huge amounts of waste such as bottom ash and fly ash, there is a need to find new applications for these materials. One of the ways of its reuse is chemical or thermal modification of the ash in order to obtain new materials, which can be further
used as adsorbents of various pollutants from water. The subject of this research was the alkali modification and alkali activation of fly ash in purpose to increase the adsorption capacity towards heavy metal ions. The success of modification process and characterization of the obtained materials was monitored by Fourier transform infrared spectroscopy, X-ray fluorescence spectroscopy and scanning electron microscopy. The concentration of zinc and cadmium ions after adsorption was determinated by atomic absorption spectroscopy. The kinetics of the adsorption process on the most efficient adsorbent were examined and the experimental data were compared with pseudo-first and pseudo-second order models. The achieved results show a positive effect of alkaline modification of fly ash on adsorption efficiency of both metals, while alkaline activation gives an exceptionally effective adsorbent in the case of zinc.
PB  - Faculty of Technology Banja Luka
C3  - XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska
T1  - Effect of alkali modification on adsorption efficiency of fly ash
EP  - 236
SP  - 231
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6067
ER  - 

@conference{
author = "Karić, Nataša and Živojinović, Sara and Vukčević, Marija and Maletić, Marina and Perić-Grujić, Aleksandra and Trivunac, Katarina",
year = "2022",
abstract = "As coal combustion in thermal power plants generates huge amounts of waste such as bottom ash and fly ash, there is a need to find new applications for these materials. One of the ways of its reuse is chemical or thermal modification of the ash in order to obtain new materials, which can be further
used as adsorbents of various pollutants from water. The subject of this research was the alkali modification and alkali activation of fly ash in purpose to increase the adsorption capacity towards heavy metal ions. The success of modification process and characterization of the obtained materials was monitored by Fourier transform infrared spectroscopy, X-ray fluorescence spectroscopy and scanning electron microscopy. The concentration of zinc and cadmium ions after adsorption was determinated by atomic absorption spectroscopy. The kinetics of the adsorption process on the most efficient adsorbent were examined and the experimental data were compared with pseudo-first and pseudo-second order models. The achieved results show a positive effect of alkaline modification of fly ash on adsorption efficiency of both metals, while alkaline activation gives an exceptionally effective adsorbent in the case of zinc.",
publisher = "Faculty of Technology Banja Luka",
journal = "XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska",
title = "Effect of alkali modification on adsorption efficiency of fly ash",
pages = "236-231",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6067"
}

Karić, N., Živojinović, S., Vukčević, M., Maletić, M., Perić-Grujić, A.,& Trivunac, K.. (2022). Effect of alkali modification on adsorption efficiency of fly ash. in XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska
Faculty of Technology Banja Luka., 231-236.
https://hdl.handle.net/21.15107/rcub_technorep_6067

Karić N, Živojinović S, Vukčević M, Maletić M, Perić-Grujić A, Trivunac K. Effect of alkali modification on adsorption efficiency of fly ash. in XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska. 2022;:231-236.
https://hdl.handle.net/21.15107/rcub_technorep_6067 .

Karić, Nataša, Živojinović, Sara, Vukčević, Marija, Maletić, Marina, Perić-Grujić, Aleksandra, Trivunac, Katarina, "Effect of alkali modification on adsorption efficiency of fly ash" in XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska (2022):231-236,
https://hdl.handle.net/21.15107/rcub_technorep_6067 .

TY  - CONF
AU  - Karić, Nataša
AU  - Olujić, Jovana
AU  - Maletić, Marina
AU  - Vukčević, Marija
AU  - Trivunac, Katarina
AU  - Ristić, Mirjana
AU  - Perić-Grujić, Aleksandra
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6119
AB  - U cilju dobijanja adsorbenata za uklanjanje organskih boja iz otpadnih voda, u okviru ovog
rada su primenjene dve vrste industrijskih otpadnih materijala. Otpadna prediva pamuka i
mešavine pamuk/poliestar modifikovana su korišćenjem smeše natrijum karboksimetil
celuloze i letećeg pepela. Karakterizacija polaznih i modifikovanih prediva izvršena je
skenirajućom elektronskom mikroskopijom i infracrvenom spektroskopijom sa Furijeovom
transformacijom, dok je adsorpcija metilensko plavog i metil oranža primenjena za
ispitivanje efikasnosti uklanjanja. Svi ispitivani uzorci pokazuju bolju efikasnost u
uklanjanju metilensko plavog, a primenjena modifikacija povećava adsorpcionu efikasnost
skoro dva puta. Pokazano je da se kombinovanjem dve vrste otpada, pamučnog prediva i
letećeg pepela, dobijaju visoko efikasni adsorbenti za uklanjanje metilensko plavog iz
vode.
AB  - In order to obtain adsorbents for the removal of organic dyes from wastewater, two types
of industrial waste materials were used in this study. Waste cotton and cotton/polyester
yarns were modified using a mixture of sodium carboxymethyl cellulose and fly ash.
Characterization of the unmodified and modified yarns was performed by scanning
electron microscopy and infrared spectroscopy with Fourier transform, while the
adsorption of methylene blue and methyl orange was used to examine the removal
efficiency. All tested samples show better efficiency in removing methylene blue, and
applied modification increase the adsorption efficiency almost twice. It has been shown
that by combining waste cotton yarn and fly ash, highly efficient adsorbents for removal of
methylene blue from water can be obtained.
PB  - Srpsko hemijsko društvo
C3  - 58. Savetovanje Srpskog hemijskog društva
T1  - Modifikovana otpadna prediva pamuka i pamuk/poliestra kao adsorbenti za uklanjanje organskih boja iz otpadnih voda
T1  - Modified waste cotton and cotton/polyester yarns as adsorbents for removal of organic dyes from wastewater
EP  - 221
SP  - 218
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6119
ER  - 

@conference{
author = "Karić, Nataša and Olujić, Jovana and Maletić, Marina and Vukčević, Marija and Trivunac, Katarina and Ristić, Mirjana and Perić-Grujić, Aleksandra",
year = "2022",
abstract = "U cilju dobijanja adsorbenata za uklanjanje organskih boja iz otpadnih voda, u okviru ovog
rada su primenjene dve vrste industrijskih otpadnih materijala. Otpadna prediva pamuka i
mešavine pamuk/poliestar modifikovana su korišćenjem smeše natrijum karboksimetil
celuloze i letećeg pepela. Karakterizacija polaznih i modifikovanih prediva izvršena je
skenirajućom elektronskom mikroskopijom i infracrvenom spektroskopijom sa Furijeovom
transformacijom, dok je adsorpcija metilensko plavog i metil oranža primenjena za
ispitivanje efikasnosti uklanjanja. Svi ispitivani uzorci pokazuju bolju efikasnost u
uklanjanju metilensko plavog, a primenjena modifikacija povećava adsorpcionu efikasnost
skoro dva puta. Pokazano je da se kombinovanjem dve vrste otpada, pamučnog prediva i
letećeg pepela, dobijaju visoko efikasni adsorbenti za uklanjanje metilensko plavog iz
vode., In order to obtain adsorbents for the removal of organic dyes from wastewater, two types
of industrial waste materials were used in this study. Waste cotton and cotton/polyester
yarns were modified using a mixture of sodium carboxymethyl cellulose and fly ash.
Characterization of the unmodified and modified yarns was performed by scanning
electron microscopy and infrared spectroscopy with Fourier transform, while the
adsorption of methylene blue and methyl orange was used to examine the removal
efficiency. All tested samples show better efficiency in removing methylene blue, and
applied modification increase the adsorption efficiency almost twice. It has been shown
that by combining waste cotton yarn and fly ash, highly efficient adsorbents for removal of
methylene blue from water can be obtained.",
publisher = "Srpsko hemijsko društvo",
journal = "58. Savetovanje Srpskog hemijskog društva",
title = "Modifikovana otpadna prediva pamuka i pamuk/poliestra kao adsorbenti za uklanjanje organskih boja iz otpadnih voda, Modified waste cotton and cotton/polyester yarns as adsorbents for removal of organic dyes from wastewater",
pages = "221-218",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6119"
}

Karić, N., Olujić, J., Maletić, M., Vukčević, M., Trivunac, K., Ristić, M.,& Perić-Grujić, A.. (2022). Modifikovana otpadna prediva pamuka i pamuk/poliestra kao adsorbenti za uklanjanje organskih boja iz otpadnih voda. in 58. Savetovanje Srpskog hemijskog društva
Srpsko hemijsko društvo., 218-221.
https://hdl.handle.net/21.15107/rcub_technorep_6119

Karić N, Olujić J, Maletić M, Vukčević M, Trivunac K, Ristić M, Perić-Grujić A. Modifikovana otpadna prediva pamuka i pamuk/poliestra kao adsorbenti za uklanjanje organskih boja iz otpadnih voda. in 58. Savetovanje Srpskog hemijskog društva. 2022;:218-221.
https://hdl.handle.net/21.15107/rcub_technorep_6119 .

Karić, Nataša, Olujić, Jovana, Maletić, Marina, Vukčević, Marija, Trivunac, Katarina, Ristić, Mirjana, Perić-Grujić, Aleksandra, "Modifikovana otpadna prediva pamuka i pamuk/poliestra kao adsorbenti za uklanjanje organskih boja iz otpadnih voda" in 58. Savetovanje Srpskog hemijskog društva (2022):218-221,
https://hdl.handle.net/21.15107/rcub_technorep_6119 .