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  - 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  - 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  - 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  - 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 .

TY  - JOUR
AU  - Karić, Nataša
AU  - Maia, Alexandra S.
AU  - Teodorović, Ana
AU  - Atanasova, Nataša
AU  - Langergraber, Guenter
AU  - Crini, Grégorio
AU  - Ribeiro, Ana R.L.
AU  - Đolić, Maja
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5094
AB  - The conventional waste management practices dispose or incinerate agricultural and forestry waste, contributing to the environmental pollution while misusing biomass, a valuable resource with a great potential of reuse. In fact, cultivation of agricultural crops and harvesting generate an abundant amount of waste (e.g., stones, shells, straw) that can be used for wastewater treatment. Waste biomass may be used as: (i) an adsorbent in its original, raw form, following ambient drying and grinding; (ii) modified bio-based sorbents; or (iii) a source material for the synthesis of activated carbon adsorbents through carbonization. Despite the numerous publications in this field examining the removal of a wide range of target pollutants (metals, metalloids, dyes, pesticides, as well as emerging contaminants) by several materials, more realistic studies are still required to evaluate the potential to remove residual compounds in complex matrices, by testing natural matrices, i.e., environmental samples without spiking the target compounds. This perspective paper highlights how an integrated-engineering approach may help solving environmental-pollution issues related to water, solid waste, and air pollution. Chiefly, the application of locally produced bio-waste as an adsorbent for wastewater treatment tackles water contamination, decreases the overall amount of agricultural waste, and reduces the potential gas emissions caused by waste transportation, treatment and/or disposal.
PB  - Elsevier B.V.
T2  - Chemical Engineering Journal Advances
T1  - Bio-waste valorisation: Agricultural wastes as biosorbents for removal of (in)organic pollutants in wastewater treatment
SP  - 100239
VL  - 9
DO  - 10.1016/j.ceja.2021.100239
ER  - 

@article{
author = "Karić, Nataša and Maia, Alexandra S. and Teodorović, Ana and Atanasova, Nataša and Langergraber, Guenter and Crini, Grégorio and Ribeiro, Ana R.L. and Đolić, Maja",
year = "2022",
abstract = "The conventional waste management practices dispose or incinerate agricultural and forestry waste, contributing to the environmental pollution while misusing biomass, a valuable resource with a great potential of reuse. In fact, cultivation of agricultural crops and harvesting generate an abundant amount of waste (e.g., stones, shells, straw) that can be used for wastewater treatment. Waste biomass may be used as: (i) an adsorbent in its original, raw form, following ambient drying and grinding; (ii) modified bio-based sorbents; or (iii) a source material for the synthesis of activated carbon adsorbents through carbonization. Despite the numerous publications in this field examining the removal of a wide range of target pollutants (metals, metalloids, dyes, pesticides, as well as emerging contaminants) by several materials, more realistic studies are still required to evaluate the potential to remove residual compounds in complex matrices, by testing natural matrices, i.e., environmental samples without spiking the target compounds. This perspective paper highlights how an integrated-engineering approach may help solving environmental-pollution issues related to water, solid waste, and air pollution. Chiefly, the application of locally produced bio-waste as an adsorbent for wastewater treatment tackles water contamination, decreases the overall amount of agricultural waste, and reduces the potential gas emissions caused by waste transportation, treatment and/or disposal.",
publisher = "Elsevier B.V.",
journal = "Chemical Engineering Journal Advances",
title = "Bio-waste valorisation: Agricultural wastes as biosorbents for removal of (in)organic pollutants in wastewater treatment",
pages = "100239",
volume = "9",
doi = "10.1016/j.ceja.2021.100239"
}

Karić, N., Maia, A. S., Teodorović, A., Atanasova, N., Langergraber, G., Crini, G., Ribeiro, A. R.L.,& Đolić, M.. (2022). Bio-waste valorisation: Agricultural wastes as biosorbents for removal of (in)organic pollutants in wastewater treatment. in Chemical Engineering Journal Advances
Elsevier B.V.., 9, 100239.
https://doi.org/10.1016/j.ceja.2021.100239

Karić N, Maia AS, Teodorović A, Atanasova N, Langergraber G, Crini G, Ribeiro AR, Đolić M. Bio-waste valorisation: Agricultural wastes as biosorbents for removal of (in)organic pollutants in wastewater treatment. in Chemical Engineering Journal Advances. 2022;9:100239.
doi:10.1016/j.ceja.2021.100239 .

Karić, Nataša, Maia, Alexandra S., Teodorović, Ana, Atanasova, Nataša, Langergraber, Guenter, Crini, Grégorio, Ribeiro, Ana R.L., Đolić, Maja, "Bio-waste valorisation: Agricultural wastes as biosorbents for removal of (in)organic pollutants in wastewater treatment" in Chemical Engineering Journal Advances, 9 (2022):100239,
https://doi.org/10.1016/j.ceja.2021.100239 . .

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

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

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

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

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

TY  - CONF
AU  - Karić, Nataša
AU  - Stanišić, Tijana
AU  - Đolić, Maja
AU  - Vukčević, Marija
AU  - Ristić, Mirjana
AU  - Perić-Grujić, Aleksandra
AU  - Marinković, Aleksandar
AU  - Trivunac, Katarina
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6083
AB  - Cilj rada bio je razvijanje jednostavnog i ekološki prihvatljivog načina pripreme katjonski modifikovanog skroba sa katjonskim reagensima, glicidiltrimetilamonijum hloridom (GTMAH) i betain
hidrohloridom (BHH), bez upotrebe organskih rastvarača. Takođe, proučavani su i uslovi reakcije
kao što su reakciona temperatura, koncentracija katjonskih reagenasa, prisustvo i koncentracija katalizatora i prirodnog plastifikatora u strukturi materijala. Strukturna karakterizacija katjonskih
skrobova izvršena je upotrebom Furijeove infracrvene (FTIR) spektroskopije i skenirajuće elektronske mikroskopije (SEM). Svojstva materijala kao što su stepen katjonizacije, viskoznost, kapacitet
bubrenja i rastvorljivost određena su prema standardnim metodama. Stepen katjonizacije pripremljenih katjonskih skrobova varirao je od 0,048-0,162 mmol g-1 za uzorke sa GTMAH i od 0,032-0,156
mmol g-1 za uzorke sa BHH. FTIR i SEM karakterizacija potvrdila je da je ugradnja katjonskog dela
u strukturu skroba bila uspešna.
AB  - In this study, a simple and eco-efficient way to prepare cationized modified starch with cationic
reactants, such as glycidyltrimethylammonium chloride (GTMAC) and betaine hydrochloride (BHC),
without using an organic solvents was developed. The processing conditions such as reaction temperature, concentration of cationic reagents, presence and concentration of catalyst and natural plasticizer within the material structure were also studied. The structure of cationic starch derivatives was
characterized by using Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The properties of materials such as cationic degree, viscosity, swelling capacity,
solubility and moisture content were determined according to standard methods. The degree of cationization of the prepared cationic starches varied from 0.048 to 0.162 mmol g-1for samples with
GTMAC and from 0.032 to 0.156 mmol g-1for samples with BHC. The FTIR and SEM characterization showed that incorporation of a cationic moiety onto the backbone of the starch was successful.
PB  - Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS), Društvo za procesnu tehniku
C3  - 34. Međunarodni kongres o procesnoj industriji - Procesing '21
T1  - Sinteza i karakterizacija katjonskog skroba za primenu u tretmanu otpadnih voda
T1  - Synthesis and characterization of cationic starch for application in the wastewater treatment
EP  - 54
SP  - 49
DO  - 10.24094/ptk.021.34.1.49
ER  - 

@conference{
author = "Karić, Nataša and Stanišić, Tijana and Đolić, Maja and Vukčević, Marija and Ristić, Mirjana and Perić-Grujić, Aleksandra and Marinković, Aleksandar and Trivunac, Katarina",
year = "2021",
abstract = "Cilj rada bio je razvijanje jednostavnog i ekološki prihvatljivog načina pripreme katjonski modifikovanog skroba sa katjonskim reagensima, glicidiltrimetilamonijum hloridom (GTMAH) i betain
hidrohloridom (BHH), bez upotrebe organskih rastvarača. Takođe, proučavani su i uslovi reakcije
kao što su reakciona temperatura, koncentracija katjonskih reagenasa, prisustvo i koncentracija katalizatora i prirodnog plastifikatora u strukturi materijala. Strukturna karakterizacija katjonskih
skrobova izvršena je upotrebom Furijeove infracrvene (FTIR) spektroskopije i skenirajuće elektronske mikroskopije (SEM). Svojstva materijala kao što su stepen katjonizacije, viskoznost, kapacitet
bubrenja i rastvorljivost određena su prema standardnim metodama. Stepen katjonizacije pripremljenih katjonskih skrobova varirao je od 0,048-0,162 mmol g-1 za uzorke sa GTMAH i od 0,032-0,156
mmol g-1 za uzorke sa BHH. FTIR i SEM karakterizacija potvrdila je da je ugradnja katjonskog dela
u strukturu skroba bila uspešna., In this study, a simple and eco-efficient way to prepare cationized modified starch with cationic
reactants, such as glycidyltrimethylammonium chloride (GTMAC) and betaine hydrochloride (BHC),
without using an organic solvents was developed. The processing conditions such as reaction temperature, concentration of cationic reagents, presence and concentration of catalyst and natural plasticizer within the material structure were also studied. The structure of cationic starch derivatives was
characterized by using Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The properties of materials such as cationic degree, viscosity, swelling capacity,
solubility and moisture content were determined according to standard methods. The degree of cationization of the prepared cationic starches varied from 0.048 to 0.162 mmol g-1for samples with
GTMAC and from 0.032 to 0.156 mmol g-1for samples with BHC. The FTIR and SEM characterization showed that incorporation of a cationic moiety onto the backbone of the starch was successful.",
publisher = "Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS), Društvo za procesnu tehniku",
journal = "34. Međunarodni kongres o procesnoj industriji - Procesing '21",
title = "Sinteza i karakterizacija katjonskog skroba za primenu u tretmanu otpadnih voda, Synthesis and characterization of cationic starch for application in the wastewater treatment",
pages = "54-49",
doi = "10.24094/ptk.021.34.1.49"
}

Karić, N., Stanišić, T., Đolić, M., Vukčević, M., Ristić, M., Perić-Grujić, A., Marinković, A.,& Trivunac, K.. (2021). Sinteza i karakterizacija katjonskog skroba za primenu u tretmanu otpadnih voda. in 34. Međunarodni kongres o procesnoj industriji - Procesing '21
Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS), Društvo za procesnu tehniku., 49-54.
https://doi.org/10.24094/ptk.021.34.1.49

Karić N, Stanišić T, Đolić M, Vukčević M, Ristić M, Perić-Grujić A, Marinković A, Trivunac K. Sinteza i karakterizacija katjonskog skroba za primenu u tretmanu otpadnih voda. in 34. Međunarodni kongres o procesnoj industriji - Procesing '21. 2021;:49-54.
doi:10.24094/ptk.021.34.1.49 .

Karić, Nataša, Stanišić, Tijana, Đolić, Maja, Vukčević, Marija, Ristić, Mirjana, Perić-Grujić, Aleksandra, Marinković, Aleksandar, Trivunac, Katarina, "Sinteza i karakterizacija katjonskog skroba za primenu u tretmanu otpadnih voda" in 34. Međunarodni kongres o procesnoj industriji - Procesing '21 (2021):49-54,
https://doi.org/10.24094/ptk.021.34.1.49 . .

TY  - CONF
AU  - Karić, Nataša
AU  - Maletić, Marina
AU  - Rnjaković, Danka
AU  - Vukčević, Marija
AU  - Perić-Grujić, Aleksandra
AU  - Ristić, Mirjana
AU  - Trivunac, Katarina
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6117
AB  - Tekstilna industrija spada u red industrija sa najvećom potrošnjom vode u svom
proizvodnom procesu. Opšta karakteristika otpadnih voda iz tekstilne industrije je, pre svega, visok
sadržaj organskih materija i visoka obojenost. Sa aspekta zaštite životne sredine, uslovi za
ispuštanje otpadnih voda su sve strožiji, dok je primena ekološki i ekonomski prihvatljivih
adsorbenata za tretman otpadnih voda veliki izazov današnjice. Upravo zbog toga, u okviru ovog
rada ispitivana je mogućnost primene katjonskih adsorbenata na bazi prirodnog materijala skroba
za uklanjanje metil oranž (MO) boje iz vodenih rastvora. Korišćena su dva derivata katjonskog
skroba, skrob modifikovan sa glicidiltrimetilamonijum hloridom (CS-G) i skrob modifikovan sa
betain hidrohloridom (CS-B). Karakterizacija funkcionalnih grupa na površini materijala izvršena
je korišćenjem infracrvene spektroskopije sa Furijeovom transformacijom (FTIR), dok je
morfologija materijala ispitana pomoću skenirajuće elektronske mikroskopije (SEM). Kako bi se
utvrdili optimalni adsorpcioni uslovi ispitana je kinetika adsorpcije, adsorpcione izoterme, kao i
uticaj pH vrednosti. Na osnovu dobijenih kapaciteta adsorpcije pri optimalnim uslovima, određene
su efikasnosti uklanjanja MO iz vodenih medijuma. Takođe, ispitana je i adsorpcija drugih
anjonskih i katjonskih boja. Ispitivani katjonski skrobovi su se pokazali kao efikasni adsorbenti za
uklanjanje MO i drugih anjonskih (alizarin crveno S, ARS), ali i katjonskih (metilensko plavo, MB i
brilijant zelena, BG) boja iz vodenih rastvora.
AB  - The textile industry is one of the industries with the highest water consumption in its
production process. The general characteristic of wastewater from the textile industry is, primarily,
the high content of organic matters and high coloration. From the aspect of environmental
protection, the conditions for wastewater discharge are becoming more stringent, while the
application of environmentally and economically acceptable adsorbents for wastewater treatment is
a great challenge today. For this reason, the possibility of using cationic adsorbents based on natural starch material to remove methyl orange (MO) from aqueous solutions was investigated.
Two cationic starch derivatives were used, starch modified with glycidyltrimethylammonium
chloride (CS-G) and starch modified with betaine hydrochloride (CS-B). Surface functional groups
were characterized by Fourier transform infrared spectroscopy (FTIR), while the morphology of
the material was examined using scanning electron microscopy (SEM). In order to determine the
optimal reaction conditions, the kinetics of adsorption, adsorption isotherms, as well as the
influence of pH values were examined. Based on the obtained adsorption capacities under optimal
conditions, the efficiencies of MO removal from aqueous media were determined. The adsorption of
other anionic and cationic dyes was also investigated. The tested cationic starches proved to be
effective adsorbents for the removal of MO and other anionic (alizarin red S, ARS), but also
cationic (methylene blue, MB and brilliant green, BG) dyes from aqueous solutions.
PB  - AKADEMIJA TEHNIČKIH STRUKOVNIH STUDIJA BEOGRAD
C3  - Šesti naučno-stručni skup Politehnika 2021
T1  - Optimizacija procesa uklanjanja anjonskih boja iz vodenih medijuma primenom katjonskih adsorbenata na bazi skroba
T1  - Optimization of process removal of anionic dyes from aqueous media using cationic adsorbents based on starch
EP  - 135
SP  - 130
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6117
ER  - 

@conference{
author = "Karić, Nataša and Maletić, Marina and Rnjaković, Danka and Vukčević, Marija and Perić-Grujić, Aleksandra and Ristić, Mirjana and Trivunac, Katarina",
year = "2021",
abstract = "Tekstilna industrija spada u red industrija sa najvećom potrošnjom vode u svom
proizvodnom procesu. Opšta karakteristika otpadnih voda iz tekstilne industrije je, pre svega, visok
sadržaj organskih materija i visoka obojenost. Sa aspekta zaštite životne sredine, uslovi za
ispuštanje otpadnih voda su sve strožiji, dok je primena ekološki i ekonomski prihvatljivih
adsorbenata za tretman otpadnih voda veliki izazov današnjice. Upravo zbog toga, u okviru ovog
rada ispitivana je mogućnost primene katjonskih adsorbenata na bazi prirodnog materijala skroba
za uklanjanje metil oranž (MO) boje iz vodenih rastvora. Korišćena su dva derivata katjonskog
skroba, skrob modifikovan sa glicidiltrimetilamonijum hloridom (CS-G) i skrob modifikovan sa
betain hidrohloridom (CS-B). Karakterizacija funkcionalnih grupa na površini materijala izvršena
je korišćenjem infracrvene spektroskopije sa Furijeovom transformacijom (FTIR), dok je
morfologija materijala ispitana pomoću skenirajuće elektronske mikroskopije (SEM). Kako bi se
utvrdili optimalni adsorpcioni uslovi ispitana je kinetika adsorpcije, adsorpcione izoterme, kao i
uticaj pH vrednosti. Na osnovu dobijenih kapaciteta adsorpcije pri optimalnim uslovima, određene
su efikasnosti uklanjanja MO iz vodenih medijuma. Takođe, ispitana je i adsorpcija drugih
anjonskih i katjonskih boja. Ispitivani katjonski skrobovi su se pokazali kao efikasni adsorbenti za
uklanjanje MO i drugih anjonskih (alizarin crveno S, ARS), ali i katjonskih (metilensko plavo, MB i
brilijant zelena, BG) boja iz vodenih rastvora., The textile industry is one of the industries with the highest water consumption in its
production process. The general characteristic of wastewater from the textile industry is, primarily,
the high content of organic matters and high coloration. From the aspect of environmental
protection, the conditions for wastewater discharge are becoming more stringent, while the
application of environmentally and economically acceptable adsorbents for wastewater treatment is
a great challenge today. For this reason, the possibility of using cationic adsorbents based on natural starch material to remove methyl orange (MO) from aqueous solutions was investigated.
Two cationic starch derivatives were used, starch modified with glycidyltrimethylammonium
chloride (CS-G) and starch modified with betaine hydrochloride (CS-B). Surface functional groups
were characterized by Fourier transform infrared spectroscopy (FTIR), while the morphology of
the material was examined using scanning electron microscopy (SEM). In order to determine the
optimal reaction conditions, the kinetics of adsorption, adsorption isotherms, as well as the
influence of pH values were examined. Based on the obtained adsorption capacities under optimal
conditions, the efficiencies of MO removal from aqueous media were determined. The adsorption of
other anionic and cationic dyes was also investigated. The tested cationic starches proved to be
effective adsorbents for the removal of MO and other anionic (alizarin red S, ARS), but also
cationic (methylene blue, MB and brilliant green, BG) dyes from aqueous solutions.",
publisher = "AKADEMIJA TEHNIČKIH STRUKOVNIH STUDIJA BEOGRAD",
journal = "Šesti naučno-stručni skup Politehnika 2021",
title = "Optimizacija procesa uklanjanja anjonskih boja iz vodenih medijuma primenom katjonskih adsorbenata na bazi skroba, Optimization of process removal of anionic dyes from aqueous media using cationic adsorbents based on starch",
pages = "135-130",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6117"
}

Karić, N., Maletić, M., Rnjaković, D., Vukčević, M., Perić-Grujić, A., Ristić, M.,& Trivunac, K.. (2021). Optimizacija procesa uklanjanja anjonskih boja iz vodenih medijuma primenom katjonskih adsorbenata na bazi skroba. in Šesti naučno-stručni skup Politehnika 2021
AKADEMIJA TEHNIČKIH STRUKOVNIH STUDIJA BEOGRAD., 130-135.
https://hdl.handle.net/21.15107/rcub_technorep_6117

Karić N, Maletić M, Rnjaković D, Vukčević M, Perić-Grujić A, Ristić M, Trivunac K. Optimizacija procesa uklanjanja anjonskih boja iz vodenih medijuma primenom katjonskih adsorbenata na bazi skroba. in Šesti naučno-stručni skup Politehnika 2021. 2021;:130-135.
https://hdl.handle.net/21.15107/rcub_technorep_6117 .

Karić, Nataša, Maletić, Marina, Rnjaković, Danka, Vukčević, Marija, Perić-Grujić, Aleksandra, Ristić, Mirjana, Trivunac, Katarina, "Optimizacija procesa uklanjanja anjonskih boja iz vodenih medijuma primenom katjonskih adsorbenata na bazi skroba" in Šesti naučno-stručni skup Politehnika 2021 (2021):130-135,
https://hdl.handle.net/21.15107/rcub_technorep_6117 .

TY  - CONF
AU  - Karić, Nataša
AU  - Maletić, Marina
AU  - Marković, Natalija
AU  - Vukčević, Marija
AU  - Perić-Grujić, Aleksandra
AU  - Ristić, Mirjana
AU  - Trivunac, Katarina
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6118
AB  - Cilj ovog rada bio je ispitivanje adsorpcionih svojstava materijala na bazi skroba za
uklanjanje fosfora iz vodenih rastvora. U komunalnim i industrijskim otpadnim vodama fosfor je
dosta prisutan u obliku rastvornih fosfata, pa je prečišćavanje otpadnih voda i uklanjanje fosfata od
presudnog značaja za sprečavanje procesa eutrofikacije, odnosno pogoršanja kvaliteta voda usled
bujanja biljnih vrsta, naročito algi i cijanobakterija. Zbog svoje jednostavnosti, ekonomičnosti i
efikasnosti, adsorpcija postaje sve atraktivnija metoda za uklanjanje fosfata iz otpadnih voda. Kao
adsorpcioni materijali korišćeni su katjonski skrobovi dobijeni katjonizacijom skroba sa
glicidiltrimetilamonijum hloridom (CS-G) i betain hidrohloridom (CS-B). Adsorpciona ispitivanja
su izvršena u šaržnom sistemu. Efikasnost adsorpcije određena je spektrofotometrijski, dok su
apsorpcione krive iskorišćene za određivanje radne talasne dužine. Ispitana je kinetika procesa,
adsorpcione izoterme, kao i uticaj pH vrednosti rastvora na kapacitet adsorpcije. Dobijeni rezultati
su upoređeni sa modelima adsorpcionih izotermi (Langmuir i Freundlich) da bi se odredilo
slaganje i dobile informacije o mehanizmu i tipu adsorpcionog procesa. Takođe, ispitan je i uticaj
prisustva pojedinačnih anjona (sulfata, fluorida i nitrata) na efikasnost adsorpcije. Rezultati
adsorpcionih ispitivanja su pokazali da se CS-G i CS-B mogu koristiti kao efikasni prirodni
adsorbenti za uklanjanje jona fosfata iz vodenih rastvora.
AB  - The aim of this study was to investigate the adsorption properties of starch-based
materials for removing phosphorus from aqueous solutions. In municipal and industrial wastewater
phosphorus is quite present in the form of soluble phosphates, so wastewater treatment and
phosphate removal are crucial to prevent the process of eutrophication, i.e. deterioration of water
quality due to the proliferation of plant species, especially algae and cyanobacteria. Due to its simplicity, economy, and efficiency, adsorption is becoming an increasingly significant method for
removing phosphate from wastewater. Cationic starches obtained by cationization of starch with
glycidyltrimethylammonium chloride (CS-G) and betaine hydrochloride (CS-B) were used as
adsorption materials. Adsorption tests were performed in a batch system. The adsorption efficiency
was determined spectrophotometrically, while the apsorption curves were used to determine the
operating wavelength. The kinetics of the process, adsorption isotherms, as well as the influence of
the pH value of the solution on the adsorption capacity were investigated. The obtained results were
compared with models of adsorption isotherms (Langmuir and Freundlich) in order to determine
the agreement and obtain information about the mechanism and type of adsorption process. The
influence of the presence of individual anions (sulphate, fluoride, and nitrate) on the adsorption
efficiency was also examined. The results of adsorption studies have shown that CS-G and CS-B
can be used as effective natural adsorbents to remove phosphate ions from aqueous solutions.
PB  - AKADEMIJA TEHNIČKIH STRUKOVNIH STUDIJA BEOGRAD
C3  - Šesti naučno-stručni skup Politehnika 2021
T1  - Proučavanje adsorpcionih svojstava katjonski modifikovanog skroba za uklanjanje fosfata iz vodenih rastvora
T1  - Study of adsorption properties of cationic modified starch for phosphate removal from aqueous solutions
EP  - 142
SP  - 136
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6118
ER  - 

@conference{
author = "Karić, Nataša and Maletić, Marina and Marković, Natalija and Vukčević, Marija and Perić-Grujić, Aleksandra and Ristić, Mirjana and Trivunac, Katarina",
year = "2021",
abstract = "Cilj ovog rada bio je ispitivanje adsorpcionih svojstava materijala na bazi skroba za
uklanjanje fosfora iz vodenih rastvora. U komunalnim i industrijskim otpadnim vodama fosfor je
dosta prisutan u obliku rastvornih fosfata, pa je prečišćavanje otpadnih voda i uklanjanje fosfata od
presudnog značaja za sprečavanje procesa eutrofikacije, odnosno pogoršanja kvaliteta voda usled
bujanja biljnih vrsta, naročito algi i cijanobakterija. Zbog svoje jednostavnosti, ekonomičnosti i
efikasnosti, adsorpcija postaje sve atraktivnija metoda za uklanjanje fosfata iz otpadnih voda. Kao
adsorpcioni materijali korišćeni su katjonski skrobovi dobijeni katjonizacijom skroba sa
glicidiltrimetilamonijum hloridom (CS-G) i betain hidrohloridom (CS-B). Adsorpciona ispitivanja
su izvršena u šaržnom sistemu. Efikasnost adsorpcije određena je spektrofotometrijski, dok su
apsorpcione krive iskorišćene za određivanje radne talasne dužine. Ispitana je kinetika procesa,
adsorpcione izoterme, kao i uticaj pH vrednosti rastvora na kapacitet adsorpcije. Dobijeni rezultati
su upoređeni sa modelima adsorpcionih izotermi (Langmuir i Freundlich) da bi se odredilo
slaganje i dobile informacije o mehanizmu i tipu adsorpcionog procesa. Takođe, ispitan je i uticaj
prisustva pojedinačnih anjona (sulfata, fluorida i nitrata) na efikasnost adsorpcije. Rezultati
adsorpcionih ispitivanja su pokazali da se CS-G i CS-B mogu koristiti kao efikasni prirodni
adsorbenti za uklanjanje jona fosfata iz vodenih rastvora., The aim of this study was to investigate the adsorption properties of starch-based
materials for removing phosphorus from aqueous solutions. In municipal and industrial wastewater
phosphorus is quite present in the form of soluble phosphates, so wastewater treatment and
phosphate removal are crucial to prevent the process of eutrophication, i.e. deterioration of water
quality due to the proliferation of plant species, especially algae and cyanobacteria. Due to its simplicity, economy, and efficiency, adsorption is becoming an increasingly significant method for
removing phosphate from wastewater. Cationic starches obtained by cationization of starch with
glycidyltrimethylammonium chloride (CS-G) and betaine hydrochloride (CS-B) were used as
adsorption materials. Adsorption tests were performed in a batch system. The adsorption efficiency
was determined spectrophotometrically, while the apsorption curves were used to determine the
operating wavelength. The kinetics of the process, adsorption isotherms, as well as the influence of
the pH value of the solution on the adsorption capacity were investigated. The obtained results were
compared with models of adsorption isotherms (Langmuir and Freundlich) in order to determine
the agreement and obtain information about the mechanism and type of adsorption process. The
influence of the presence of individual anions (sulphate, fluoride, and nitrate) on the adsorption
efficiency was also examined. The results of adsorption studies have shown that CS-G and CS-B
can be used as effective natural adsorbents to remove phosphate ions from aqueous solutions.",
publisher = "AKADEMIJA TEHNIČKIH STRUKOVNIH STUDIJA BEOGRAD",
journal = "Šesti naučno-stručni skup Politehnika 2021",
title = "Proučavanje adsorpcionih svojstava katjonski modifikovanog skroba za uklanjanje fosfata iz vodenih rastvora, Study of adsorption properties of cationic modified starch for phosphate removal from aqueous solutions",
pages = "142-136",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6118"
}

Karić, N., Maletić, M., Marković, N., Vukčević, M., Perić-Grujić, A., Ristić, M.,& Trivunac, K.. (2021). Proučavanje adsorpcionih svojstava katjonski modifikovanog skroba za uklanjanje fosfata iz vodenih rastvora. in Šesti naučno-stručni skup Politehnika 2021
AKADEMIJA TEHNIČKIH STRUKOVNIH STUDIJA BEOGRAD., 136-142.
https://hdl.handle.net/21.15107/rcub_technorep_6118

Karić N, Maletić M, Marković N, Vukčević M, Perić-Grujić A, Ristić M, Trivunac K. Proučavanje adsorpcionih svojstava katjonski modifikovanog skroba za uklanjanje fosfata iz vodenih rastvora. in Šesti naučno-stručni skup Politehnika 2021. 2021;:136-142.
https://hdl.handle.net/21.15107/rcub_technorep_6118 .

Karić, Nataša, Maletić, Marina, Marković, Natalija, Vukčević, Marija, Perić-Grujić, Aleksandra, Ristić, Mirjana, Trivunac, Katarina, "Proučavanje adsorpcionih svojstava katjonski modifikovanog skroba za uklanjanje fosfata iz vodenih rastvora" in Šesti naučno-stručni skup Politehnika 2021 (2021):136-142,
https://hdl.handle.net/21.15107/rcub_technorep_6118 .

TY  - CONF
AU  - Stanišić, Tijana
AU  - Karić, Nataša
AU  - Karanac, Milica
AU  - Đolić, Maja
AU  - Ristić, Mirjana
AU  - Perić-Grujić, Aleksandra
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6115
AB  - U ovom radu ispitana su adsorpciona svojstva tri prirodna mineralna materijala za uklanjanje
Pb(II) i As(V) jona iz vodenih rastvora. Sveobuhvatna strukturna analiza pokazala je glavne mineralne komponente, SiO2, Al2O3 i Fe2O3, a najveći udeo u sastavu ovih materijala imaju kvarc, mikrolin
i kaolinit. Optimalni uslovi su utvrđeni na osnovu rezultata dosadašnjih istraživanja i variranjem mase
ispitivanih adsorbenata. Rezultati su pokazali da sa povećanjem mase materijala raste efikasnost uklanjanja jona , sve do optimalnog odnosa (m:V=1:1), nakon čega je efikasnost uklanjanja zanemarljiva.
Najbolju efikasnost uklanjanja, pri optimalnim uslovima, pokazao je materijal čija je glavna tekstura
ilovača (94,8 %) pri uklanjanju Pb(II) jona i materijal čija je glavna tekstura peskovita ilovača (47,5
%) pri separaciji As(V) jona. Dalja ispitivanja će biti usmerena na ispitivanje simultanog izdvajanja
odabranih jona, kao i na određivanje adsorpcionih izotermi, kinetičkih i termodinamičkih parametara procesa adsorpcije, mogućnosti regeneracije upotrebljenih adsorbenata, kao i njihove ponovne upotrebe
ili bezbednog zbrinjavanja, nakon adsorpcije.
AB  - The aim of this research is to examine the efficiency of raw mineral materials that possess good
adsorption and techno-economic properties applicable in real systems for the removal of heavy metal
ions, primarily lead and arsenic. The adsorption studies were conducted in batch system. To determine the optimal conditions, the adsorption efficiency of the selected ions was tested by variation of
the adsorbents mass (5, 7.5, 10 and 20 mg). The materials used in the experimental work are of
mineral origin, whose composition consists mainly of SiO2, Al2O3 and Fe2O3. The characterization
of analyzed materials was performed using X-Ray Diffraction (XRD), Fourier-Transform Infrared
Spectroscopy (FTIR) and scanning electron microscopy (SEM). The maximum removal efficiency of
lead ions is 94.8 %, on the material predominantly composed of loam, while for arsenic it is 47.5 %
on material based on sandy loam.
PB  - Departman za energetiku i procesnu tehniku - FTN
C3  - Međunarodni kongres o procesnoj industriji - Procesing '21
T1  - Prirodni adsorbenti na bazi metalnih oksida za uklanjanje jona olova i arsena iz vodenih rastvora
DO  - 10.24094/ptk.021.34.1.43
ER  - 

@conference{
author = "Stanišić, Tijana and Karić, Nataša and Karanac, Milica and Đolić, Maja and Ristić, Mirjana and Perić-Grujić, Aleksandra",
year = "2021",
abstract = "U ovom radu ispitana su adsorpciona svojstva tri prirodna mineralna materijala za uklanjanje
Pb(II) i As(V) jona iz vodenih rastvora. Sveobuhvatna strukturna analiza pokazala je glavne mineralne komponente, SiO2, Al2O3 i Fe2O3, a najveći udeo u sastavu ovih materijala imaju kvarc, mikrolin
i kaolinit. Optimalni uslovi su utvrđeni na osnovu rezultata dosadašnjih istraživanja i variranjem mase
ispitivanih adsorbenata. Rezultati su pokazali da sa povećanjem mase materijala raste efikasnost uklanjanja jona , sve do optimalnog odnosa (m:V=1:1), nakon čega je efikasnost uklanjanja zanemarljiva.
Najbolju efikasnost uklanjanja, pri optimalnim uslovima, pokazao je materijal čija je glavna tekstura
ilovača (94,8 %) pri uklanjanju Pb(II) jona i materijal čija je glavna tekstura peskovita ilovača (47,5
%) pri separaciji As(V) jona. Dalja ispitivanja će biti usmerena na ispitivanje simultanog izdvajanja
odabranih jona, kao i na određivanje adsorpcionih izotermi, kinetičkih i termodinamičkih parametara procesa adsorpcije, mogućnosti regeneracije upotrebljenih adsorbenata, kao i njihove ponovne upotrebe
ili bezbednog zbrinjavanja, nakon adsorpcije., The aim of this research is to examine the efficiency of raw mineral materials that possess good
adsorption and techno-economic properties applicable in real systems for the removal of heavy metal
ions, primarily lead and arsenic. The adsorption studies were conducted in batch system. To determine the optimal conditions, the adsorption efficiency of the selected ions was tested by variation of
the adsorbents mass (5, 7.5, 10 and 20 mg). The materials used in the experimental work are of
mineral origin, whose composition consists mainly of SiO2, Al2O3 and Fe2O3. The characterization
of analyzed materials was performed using X-Ray Diffraction (XRD), Fourier-Transform Infrared
Spectroscopy (FTIR) and scanning electron microscopy (SEM). The maximum removal efficiency of
lead ions is 94.8 %, on the material predominantly composed of loam, while for arsenic it is 47.5 %
on material based on sandy loam.",
publisher = "Departman za energetiku i procesnu tehniku - FTN",
journal = "Međunarodni kongres o procesnoj industriji - Procesing '21",
title = "Prirodni adsorbenti na bazi metalnih oksida za uklanjanje jona olova i arsena iz vodenih rastvora",
doi = "10.24094/ptk.021.34.1.43"
}

Stanišić, T., Karić, N., Karanac, M., Đolić, M., Ristić, M.,& Perić-Grujić, A.. (2021). Prirodni adsorbenti na bazi metalnih oksida za uklanjanje jona olova i arsena iz vodenih rastvora. in Međunarodni kongres o procesnoj industriji - Procesing '21
Departman za energetiku i procesnu tehniku - FTN..
https://doi.org/10.24094/ptk.021.34.1.43

Stanišić T, Karić N, Karanac M, Đolić M, Ristić M, Perić-Grujić A. Prirodni adsorbenti na bazi metalnih oksida za uklanjanje jona olova i arsena iz vodenih rastvora. in Međunarodni kongres o procesnoj industriji - Procesing '21. 2021;.
doi:10.24094/ptk.021.34.1.43 .

Stanišić, Tijana, Karić, Nataša, Karanac, Milica, Đolić, Maja, Ristić, Mirjana, Perić-Grujić, Aleksandra, "Prirodni adsorbenti na bazi metalnih oksida za uklanjanje jona olova i arsena iz vodenih rastvora" in Međunarodni kongres o procesnoj industriji - Procesing '21 (2021),
https://doi.org/10.24094/ptk.021.34.1.43 . .

TY  - JOUR
AU  - Karić, Nataša
AU  - Vukčević, Marija
AU  - Ristić, Mirjana
AU  - Perić-Grujić, Aleksandra
AU  - Marinković, Aleksandar
AU  - Trivunac, Katarina
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4777
AB  - In this study, a novel simple and eco-efficient, semi-dry method with a spray system for starch modification has been developed. Compared to conventional semi-dry methods, this method does not use solvents so that no slurry or semi-liquid mixture is obtained, the material is in a moisted/semi-moisted state. The modification of starch was performed using betaine hydrochloride (BHC) as the cationic reagent, and the characteristics of such starch derivates were compared with cationic starches obtained using glycidyltrimethylammonium chloride (GTMAC). Due to the instability, toxicity, and high cost of the most commonly used GTMAC, it should be replaced with more eco-friendly reagents, such as BHC, which is derived from betaine found in most green plants (e.g., spinach - Spinacia oleracea, beets - Beta vulgaris). The influence of processing conditions such as temperature, concentration of cationic reagents, presence and concentration of natural plasticizers/catalyst on physico-chemical and structural properties of cationic starches have also been studied. The cationic degree varied from 0.045-0.204 for the starch-BHC samples and within the range of 0.066-0.245 for the starch-GTMAC samples. The modification of starch with cationic reagents resulted in an increased solubility and swelling capacity, followed by decreased viscosity of the modified starches.
T2  - International Journal of Biological Macromolecules
T1  - A green approach to starch modification by solvent-free method with betaine hydrochloride
EP  - 1971
SP  - 1962
VL  - 193
DO  - 10.1016/j.ijbiomac.2021.11.027
ER  - 

@article{
author = "Karić, Nataša and Vukčević, Marija and Ristić, Mirjana and Perić-Grujić, Aleksandra and Marinković, Aleksandar and Trivunac, Katarina",
year = "2021",
abstract = "In this study, a novel simple and eco-efficient, semi-dry method with a spray system for starch modification has been developed. Compared to conventional semi-dry methods, this method does not use solvents so that no slurry or semi-liquid mixture is obtained, the material is in a moisted/semi-moisted state. The modification of starch was performed using betaine hydrochloride (BHC) as the cationic reagent, and the characteristics of such starch derivates were compared with cationic starches obtained using glycidyltrimethylammonium chloride (GTMAC). Due to the instability, toxicity, and high cost of the most commonly used GTMAC, it should be replaced with more eco-friendly reagents, such as BHC, which is derived from betaine found in most green plants (e.g., spinach - Spinacia oleracea, beets - Beta vulgaris). The influence of processing conditions such as temperature, concentration of cationic reagents, presence and concentration of natural plasticizers/catalyst on physico-chemical and structural properties of cationic starches have also been studied. The cationic degree varied from 0.045-0.204 for the starch-BHC samples and within the range of 0.066-0.245 for the starch-GTMAC samples. The modification of starch with cationic reagents resulted in an increased solubility and swelling capacity, followed by decreased viscosity of the modified starches.",
journal = "International Journal of Biological Macromolecules",
title = "A green approach to starch modification by solvent-free method with betaine hydrochloride",
pages = "1971-1962",
volume = "193",
doi = "10.1016/j.ijbiomac.2021.11.027"
}

Karić, N., Vukčević, M., Ristić, M., Perić-Grujić, A., Marinković, A.,& Trivunac, K.. (2021). A green approach to starch modification by solvent-free method with betaine hydrochloride. in International Journal of Biological Macromolecules, 193, 1962-1971.
https://doi.org/10.1016/j.ijbiomac.2021.11.027

Karić N, Vukčević M, Ristić M, Perić-Grujić A, Marinković A, Trivunac K. A green approach to starch modification by solvent-free method with betaine hydrochloride. in International Journal of Biological Macromolecules. 2021;193:1962-1971.
doi:10.1016/j.ijbiomac.2021.11.027 .

Karić, Nataša, Vukčević, Marija, Ristić, Mirjana, Perić-Grujić, Aleksandra, Marinković, Aleksandar, Trivunac, Katarina, "A green approach to starch modification by solvent-free method with betaine hydrochloride" in International Journal of Biological Macromolecules, 193 (2021):1962-1971,
https://doi.org/10.1016/j.ijbiomac.2021.11.027 . .

TY  - JOUR
AU  - Marinković, Aleksandar
AU  - Vuksanović, Marija M.
AU  - Karić, Nataša
AU  - Đokić, Veljko
AU  - Popović, Mina
AU  - Jančić-Heinemann, Radmila
AU  - Tomić, Nataša
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7
AB  - As a renewable resource, starch is considered to be fully biodegradable and nonpolluting to the environment but the hygroscopicity of starch is the main disadvantage for wider applicability in the production of a polymer-based material. Hydrophobically modified starch prepared using natural-based plasticizers/modifiers in a first step ([-]-diisopropyl D-tartrate [DiPT], ricinoleic acid [RA] and epoxidized soybean oil [ESO]), and maleated polypropylene (MAPP) in a second step contributed to better compatibility, and thus reinforcing of composites. Tailored processing conditions, structural/morphological properties, hydrophobicity, and water-resistance of the modified starch were established. In addition, the Charpy impact and tensile strength of composites, based on poly(ethylene-co-acrylic acid) (EAA) and modified starches, were determined. Increased tensile strength and Young modulus of the composite using starch-modified with DiPT-MAPP, that is, 3 and 83%, respectively, indicated the possible applicability of obtained materials.
PB  - Wiley, Hoboken
T2  - Polymer Composites
T1  - The effect of natural modifiers for starch hydrophobization on performance of composite based on ethylene acrylic acid copolymer
EP  - 1325
IS  - 3
SP  - 1337
VL  - 42
DO  - 10.1002/pc.25903
ER  - 

@article{
author = "Marinković, Aleksandar and Vuksanović, Marija M. and Karić, Nataša and Đokić, Veljko and Popović, Mina and Jančić-Heinemann, Radmila and Tomić, Nataša",
year = "2021",
abstract = "As a renewable resource, starch is considered to be fully biodegradable and nonpolluting to the environment but the hygroscopicity of starch is the main disadvantage for wider applicability in the production of a polymer-based material. Hydrophobically modified starch prepared using natural-based plasticizers/modifiers in a first step ([-]-diisopropyl D-tartrate [DiPT], ricinoleic acid [RA] and epoxidized soybean oil [ESO]), and maleated polypropylene (MAPP) in a second step contributed to better compatibility, and thus reinforcing of composites. Tailored processing conditions, structural/morphological properties, hydrophobicity, and water-resistance of the modified starch were established. In addition, the Charpy impact and tensile strength of composites, based on poly(ethylene-co-acrylic acid) (EAA) and modified starches, were determined. Increased tensile strength and Young modulus of the composite using starch-modified with DiPT-MAPP, that is, 3 and 83%, respectively, indicated the possible applicability of obtained materials.",
publisher = "Wiley, Hoboken",
journal = "Polymer Composites",
title = "The effect of natural modifiers for starch hydrophobization on performance of composite based on ethylene acrylic acid copolymer",
pages = "1325-1337",
number = "3",
volume = "42",
doi = "10.1002/pc.25903"
}

Marinković, A., Vuksanović, M. M., Karić, N., Đokić, V., Popović, M., Jančić-Heinemann, R.,& Tomić, N.. (2021). The effect of natural modifiers for starch hydrophobization on performance of composite based on ethylene acrylic acid copolymer. in Polymer Composites
Wiley, Hoboken., 42(3), 1337-1325.
https://doi.org/10.1002/pc.25903

Marinković A, Vuksanović MM, Karić N, Đokić V, Popović M, Jančić-Heinemann R, Tomić N. The effect of natural modifiers for starch hydrophobization on performance of composite based on ethylene acrylic acid copolymer. in Polymer Composites. 2021;42(3):1337-1325.
doi:10.1002/pc.25903 .

Marinković, Aleksandar, Vuksanović, Marija M., Karić, Nataša, Đokić, Veljko, Popović, Mina, Jančić-Heinemann, Radmila, Tomić, Nataša, "The effect of natural modifiers for starch hydrophobization on performance of composite based on ethylene acrylic acid copolymer" in Polymer Composites, 42, no. 3 (2021):1337-1325,
https://doi.org/10.1002/pc.25903 . .

TY  - JOUR
AU  - Karić, Nataša
AU  - Rusmirović, Jelena
AU  - Đolić, Maja
AU  - Kovačević, Tihomir
AU  - Pecić, Ljiljana
AU  - Radovanović, Željko
AU  - Marinković, Aleksandar
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4487
AB  - Oxidized starch, an additive used in paper manufacturing and products for construction industry, is usually produced using harmful oxidant, such as hypochlorites or periodates. In this study, a simple and efficient eco-friendly laboratory and industrial procedures for starch oxidation were developed. The procedure involves application of small amounts of more environmentally friendly oxidant, hydrogen peroxide, a novel special metal complex catalyst such as copper(II) citrate and copper(II) ricinoleate and biobased plasticizers. Optimization procedure, with respect to the quantity of hydrogen peroxide and temperature in the presence of iron(II) sulphate catalyst, was performed by using the response surface methodology. Comparative analysis of the use of the other catalysts that is copper(II) sulphate, copper(II) citrate and copper(II) ricinoleate, indicated copper(II) citrate as the catalyst of choice. Improvement of starch is achieved using three plasticizers: ricinoleic acid (RA), diisopropyl tartarate, as well as epoxidized soybean, linseed and sunflower oils. The effects of hydrogen peroxide and catalyst concentrations, as well as the reaction temperature in the presence of naturally based plasticizers on the physicochemical, thermal and morphological properties of oxidized starch are presented. According to the results obtained in initial experiments, the optimal industrial process is based on the use of copper(II) citrate (0.1 %) as a catalyst and RA (3 %) as a plasticizer.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Preparation and properties of hydrogen peroxide oxidized starch for industrial use
EP  - 36
IS  - 1
SP  - 25
VL  - 74
DO  - 10.2298/HEMIND190722004K
ER  - 

@article{
author = "Karić, Nataša and Rusmirović, Jelena and Đolić, Maja and Kovačević, Tihomir and Pecić, Ljiljana and Radovanović, Željko and Marinković, Aleksandar",
year = "2020",
abstract = "Oxidized starch, an additive used in paper manufacturing and products for construction industry, is usually produced using harmful oxidant, such as hypochlorites or periodates. In this study, a simple and efficient eco-friendly laboratory and industrial procedures for starch oxidation were developed. The procedure involves application of small amounts of more environmentally friendly oxidant, hydrogen peroxide, a novel special metal complex catalyst such as copper(II) citrate and copper(II) ricinoleate and biobased plasticizers. Optimization procedure, with respect to the quantity of hydrogen peroxide and temperature in the presence of iron(II) sulphate catalyst, was performed by using the response surface methodology. Comparative analysis of the use of the other catalysts that is copper(II) sulphate, copper(II) citrate and copper(II) ricinoleate, indicated copper(II) citrate as the catalyst of choice. Improvement of starch is achieved using three plasticizers: ricinoleic acid (RA), diisopropyl tartarate, as well as epoxidized soybean, linseed and sunflower oils. The effects of hydrogen peroxide and catalyst concentrations, as well as the reaction temperature in the presence of naturally based plasticizers on the physicochemical, thermal and morphological properties of oxidized starch are presented. According to the results obtained in initial experiments, the optimal industrial process is based on the use of copper(II) citrate (0.1 %) as a catalyst and RA (3 %) as a plasticizer.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Preparation and properties of hydrogen peroxide oxidized starch for industrial use",
pages = "36-25",
number = "1",
volume = "74",
doi = "10.2298/HEMIND190722004K"
}

Karić, N., Rusmirović, J., Đolić, M., Kovačević, T., Pecić, L., Radovanović, Ž.,& Marinković, A.. (2020). Preparation and properties of hydrogen peroxide oxidized starch for industrial use. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 74(1), 25-36.
https://doi.org/10.2298/HEMIND190722004K

Karić N, Rusmirović J, Đolić M, Kovačević T, Pecić L, Radovanović Ž, Marinković A. Preparation and properties of hydrogen peroxide oxidized starch for industrial use. in Hemijska industrija. 2020;74(1):25-36.
doi:10.2298/HEMIND190722004K .

Karić, Nataša, Rusmirović, Jelena, Đolić, Maja, Kovačević, Tihomir, Pecić, Ljiljana, Radovanović, Željko, Marinković, Aleksandar, "Preparation and properties of hydrogen peroxide oxidized starch for industrial use" in Hemijska industrija, 74, no. 1 (2020):25-36,
https://doi.org/10.2298/HEMIND190722004K . .