TY  - JOUR
AU  - Ivanovska, Aleksandra
AU  - Dojčinović, Biljana
AU  - Lađarević, Jelena
AU  - Pavun, Leposava
AU  - Mijin, Dušan
AU  - Kostić, Mirjana
AU  - Svetozarević, Milica
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6677
AB  - This study is aimed at extending the soybean hulls' lifetime by their utilization as an adsorbent for metal ions (Cd2+ and Cu2+) and dyes (Reactive Yellow 39 (RY 39) and Acid Blue 225 (AB 225)). ATR-FTIR spectroscopy, FE-SEM microscopy, and zeta potential measurements were used for adsorbent characterization. The effect of the solution's pH, peroxidase extraction, adsorbent particle size, contact time, the pollutant's initial concentration, and temperature on the soybean hulls' adsorption potential was studied. Before peroxidase extraction, soybean hulls were capable of removing 72% Cd2+, 71% Cu2+ (at a pH of 5.00) or 81% RY 39, and 73% AB 225 (at a pH of 3.00). For further experiments, soybean hulls without peroxidase were used for several reasons: (1) due to their observed higher metal ion removal, (2) in order to reduce the waste disposal cost after the peroxidase (usually used for wastewater decolorization) extraction, and (3) since the soybean hulls without peroxidase possessed significantly lower secondary pollution than those with peroxidase. Cd2+ and Cu2+ removal was slightly increased when the smaller adsorbent fraction (710-1000 μm) was used, while the adsorbent particle size did not have an impact on dye removal. After 30 min of contact time, 92% and 88% of RY 39 and AB 225 were removed, respectively, while after the same contact time, 80% and 69% of Cd2+ and Cu2+ were removed, respectively. Adsorption of all tested pollutants follows a pseudo-second-order reaction through the fast adsorption, intraparticle diffusion, and final equilibrium stage. The maximal adsorption capacities determined by the Langmuir model were 21.10, 20.54, 16.54, and 17.23 mg/g for Cd2+, Cu2+, RY 39, and AB 225, respectively. Calculated thermodynamic parameters suggested that the adsorption of all pollutants is spontaneous and of endothermic character. Moreover, different binary mixtures were prepared, and the competitive adsorptions revealed that the soybean hulls are the most efficient adsorbent for the mixture of AB 225 and Cu2+. The findings of this study contribute to the soybean hulls' recovery after the peroxidase extraction and bring them into the circular economy concept.
PB  - Hindawi
T2  - Adsorption Science and Technology
T1  - Recovering the Soybean Hulls after Peroxidase Extraction and Their Application as Adsorbent for Metal Ions and Dyes
VL  - 2023
SP  - 8532316
DO  - 10.1155/2023/8532316
ER  - 

@article{
author = "Ivanovska, Aleksandra and Dojčinović, Biljana and Lađarević, Jelena and Pavun, Leposava and Mijin, Dušan and Kostić, Mirjana and Svetozarević, Milica",
year = "2023",
abstract = "This study is aimed at extending the soybean hulls' lifetime by their utilization as an adsorbent for metal ions (Cd2+ and Cu2+) and dyes (Reactive Yellow 39 (RY 39) and Acid Blue 225 (AB 225)). ATR-FTIR spectroscopy, FE-SEM microscopy, and zeta potential measurements were used for adsorbent characterization. The effect of the solution's pH, peroxidase extraction, adsorbent particle size, contact time, the pollutant's initial concentration, and temperature on the soybean hulls' adsorption potential was studied. Before peroxidase extraction, soybean hulls were capable of removing 72% Cd2+, 71% Cu2+ (at a pH of 5.00) or 81% RY 39, and 73% AB 225 (at a pH of 3.00). For further experiments, soybean hulls without peroxidase were used for several reasons: (1) due to their observed higher metal ion removal, (2) in order to reduce the waste disposal cost after the peroxidase (usually used for wastewater decolorization) extraction, and (3) since the soybean hulls without peroxidase possessed significantly lower secondary pollution than those with peroxidase. Cd2+ and Cu2+ removal was slightly increased when the smaller adsorbent fraction (710-1000 μm) was used, while the adsorbent particle size did not have an impact on dye removal. After 30 min of contact time, 92% and 88% of RY 39 and AB 225 were removed, respectively, while after the same contact time, 80% and 69% of Cd2+ and Cu2+ were removed, respectively. Adsorption of all tested pollutants follows a pseudo-second-order reaction through the fast adsorption, intraparticle diffusion, and final equilibrium stage. The maximal adsorption capacities determined by the Langmuir model were 21.10, 20.54, 16.54, and 17.23 mg/g for Cd2+, Cu2+, RY 39, and AB 225, respectively. Calculated thermodynamic parameters suggested that the adsorption of all pollutants is spontaneous and of endothermic character. Moreover, different binary mixtures were prepared, and the competitive adsorptions revealed that the soybean hulls are the most efficient adsorbent for the mixture of AB 225 and Cu2+. The findings of this study contribute to the soybean hulls' recovery after the peroxidase extraction and bring them into the circular economy concept.",
publisher = "Hindawi",
journal = "Adsorption Science and Technology",
title = "Recovering the Soybean Hulls after Peroxidase Extraction and Their Application as Adsorbent for Metal Ions and Dyes",
volume = "2023",
pages = "8532316",
doi = "10.1155/2023/8532316"
}

Ivanovska, A., Dojčinović, B., Lađarević, J., Pavun, L., Mijin, D., Kostić, M.,& Svetozarević, M.. (2023). Recovering the Soybean Hulls after Peroxidase Extraction and Their Application as Adsorbent for Metal Ions and Dyes. in Adsorption Science and Technology
Hindawi., 2023, 8532316.
https://doi.org/10.1155/2023/8532316

Ivanovska A, Dojčinović B, Lađarević J, Pavun L, Mijin D, Kostić M, Svetozarević M. Recovering the Soybean Hulls after Peroxidase Extraction and Their Application as Adsorbent for Metal Ions and Dyes. in Adsorption Science and Technology. 2023;2023:8532316.
doi:10.1155/2023/8532316 .

Ivanovska, Aleksandra, Dojčinović, Biljana, Lađarević, Jelena, Pavun, Leposava, Mijin, Dušan, Kostić, Mirjana, Svetozarević, Milica, "Recovering the Soybean Hulls after Peroxidase Extraction and Their Application as Adsorbent for Metal Ions and Dyes" in Adsorption Science and Technology, 2023 (2023):8532316,
https://doi.org/10.1155/2023/8532316 . .

TY  - CONF
AU  - Ivanovska, Aleksandra
AU  - Milošević, Marija
AU  - Lađarević, Jelena
AU  - Dojčinović, Biljana
AU  - Matić, Tamara
AU  - Barać, Nemanja
AU  - Kostić, Mirjana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7347
AB  - This investigation represents a novel approach for tuning the jute structure and properties using sodium periodate (NaIO4) oxidation. The obtained results revealed that the jute fabrics exhibited an increase in the aldehyde group content (for up to 114.7%) with an increase in the NaIO4 concentration and/or oxidation duration. Due to the decline in the cellulose lateral order index (LOI) and fiber crystallinity index after oxidation, it can be concluded that jute crystalline areas are affected by sodium periodate oxidation. Both mentioned parameters are responsible for fabric mechanical properties, so, it was expected that by decreasing the LOI and jute fibers’ crystallinity, their maximum force and stiffness will decrease too. This behavior is also attributed to the fiber damage, which is the most pronounced for the fabric treated with 0.4% NaIO4 for 120 min. Besides slightly deteriorated mechanical properties, fabrics oxidized with 0.2% NaIO4 for 60 or 120 min and with 0.4% NaIO4 for 60 min showed lower mass loss (6.78-12.22%) after 750 abrasion cycles compared to the raw jute (18.94%). Furthermore, oxidation led to obtaining fabrics with enhanced moisture sorption and water retention power that are inversely proportional to the fiber crystallinity. Due to the opportunity for tuning fiber structure and properties oxidized fabrics can be considered for various applications such as geo-prebiotic supports for cyanobacteria growth in biocarpet engineering, i.e., to promote a sustainable relationship between the microbiota and abiotic constituents on the degraded land surface.
PB  - Skopje : Society of chemists and technologists of Macedonia
C3  - Book of Abstracts - 26th Congress of Chemists and Technologists of Macedonia with international participation, 20-23 September2023. Ohrid, N. Macedonia
T1  - Sodium Periodate Oxidation of Raw Jute Fabric – A Novel Approach for Tuning the Jute Structure and Properties
SP  - 190
EP  - 190
UR  - https://hdl.handle.net/21.15107/rcub_cer_7347
ER  - 

@conference{
author = "Ivanovska, Aleksandra and Milošević, Marija and Lađarević, Jelena and Dojčinović, Biljana and Matić, Tamara and Barać, Nemanja and Kostić, Mirjana",
year = "2023",
abstract = "This investigation represents a novel approach for tuning the jute structure and properties using sodium periodate (NaIO4) oxidation. The obtained results revealed that the jute fabrics exhibited an increase in the aldehyde group content (for up to 114.7%) with an increase in the NaIO4 concentration and/or oxidation duration. Due to the decline in the cellulose lateral order index (LOI) and fiber crystallinity index after oxidation, it can be concluded that jute crystalline areas are affected by sodium periodate oxidation. Both mentioned parameters are responsible for fabric mechanical properties, so, it was expected that by decreasing the LOI and jute fibers’ crystallinity, their maximum force and stiffness will decrease too. This behavior is also attributed to the fiber damage, which is the most pronounced for the fabric treated with 0.4% NaIO4 for 120 min. Besides slightly deteriorated mechanical properties, fabrics oxidized with 0.2% NaIO4 for 60 or 120 min and with 0.4% NaIO4 for 60 min showed lower mass loss (6.78-12.22%) after 750 abrasion cycles compared to the raw jute (18.94%). Furthermore, oxidation led to obtaining fabrics with enhanced moisture sorption and water retention power that are inversely proportional to the fiber crystallinity. Due to the opportunity for tuning fiber structure and properties oxidized fabrics can be considered for various applications such as geo-prebiotic supports for cyanobacteria growth in biocarpet engineering, i.e., to promote a sustainable relationship between the microbiota and abiotic constituents on the degraded land surface.",
publisher = "Skopje : Society of chemists and technologists of Macedonia",
journal = "Book of Abstracts - 26th Congress of Chemists and Technologists of Macedonia with international participation, 20-23 September2023. Ohrid, N. Macedonia",
title = "Sodium Periodate Oxidation of Raw Jute Fabric – A Novel Approach for Tuning the Jute Structure and Properties",
pages = "190-190",
url = "https://hdl.handle.net/21.15107/rcub_cer_7347"
}

Ivanovska, A., Milošević, M., Lađarević, J., Dojčinović, B., Matić, T., Barać, N.,& Kostić, M.. (2023). Sodium Periodate Oxidation of Raw Jute Fabric – A Novel Approach for Tuning the Jute Structure and Properties. in Book of Abstracts - 26th Congress of Chemists and Technologists of Macedonia with international participation, 20-23 September2023. Ohrid, N. Macedonia
Skopje : Society of chemists and technologists of Macedonia., 190-190.
https://hdl.handle.net/21.15107/rcub_cer_7347

Ivanovska A, Milošević M, Lađarević J, Dojčinović B, Matić T, Barać N, Kostić M. Sodium Periodate Oxidation of Raw Jute Fabric – A Novel Approach for Tuning the Jute Structure and Properties. in Book of Abstracts - 26th Congress of Chemists and Technologists of Macedonia with international participation, 20-23 September2023. Ohrid, N. Macedonia. 2023;:190-190.
https://hdl.handle.net/21.15107/rcub_cer_7347 .

Ivanovska, Aleksandra, Milošević, Marija, Lađarević, Jelena, Dojčinović, Biljana, Matić, Tamara, Barać, Nemanja, Kostić, Mirjana, "Sodium Periodate Oxidation of Raw Jute Fabric – A Novel Approach for Tuning the Jute Structure and Properties" in Book of Abstracts - 26th Congress of Chemists and Technologists of Macedonia with international participation, 20-23 September2023. Ohrid, N. Macedonia (2023):190-190,
https://hdl.handle.net/21.15107/rcub_cer_7347 .

TY  - JOUR
AU  - Ivanovska, Aleksandra
AU  - Dojčinović, Biljana
AU  - Mangovska, Biljana
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5570
AB  - This research studied the influence of common wet processes (i.e. bleaching, dyeing, or softening) on the quality of 1 × 1 rib cotton/elastane knitted fabrics. The changes in their structural (thickness, weight, and stitch density) parameters, mechanical (bursting elongation and stiffness), comfort (air permeability and moisture sorption), and esthetic (pilling propensity) properties are discussed as an influence of the used elastane type (multifilament or monofilament), and content (4% or 8%), and applied wet processes. The severity of the bleaching process (high pH value and boiling temperature) and the resulting fabrics’ less compact structure contributed to a 17.3% higher bursting elongation of bleached compared to the dyed fabrics. Fabrics having a higher content of less finner elastane (8%, 235 dtex) have 40% and up to 21% higher stiffness and bursting elongation than fabrics containing 4% elastane of 78 dtex. The aforementioned fabrics (having 4% elastane) are softer and more comfortable since they are characterized by up to 37.9% and 5.6% higher air permeability and moisture sorption than fabrics having 8% elastane. Dyed knitted fabrics provided a better intensity of warm/cool feeling than the bleached ones due to the better comfort properties. Up to 5000 pilling cycles, the fabrics’ pilling propensity increased with an increase in elastane fineness, while at the same number of pilling cycles, dyed fabrics have a lower pilling propensity than the bleached ones. The calculated complex criterion of fabrics’ quality revealed that pilling propensity and stiffness are the main contributors to their quality that ranged from excellent to satisfying. The “satisfying” fabric quality was improved to “good” by softening with silicone softener, whereby the high content of silicon (197.51 μg/g, assessed by ICP-OES) within the bleached fabric having 8% elastane contributed to lower piling propensity compared to the corresponding non-softened fabric.
PB  - SAGE Publications
T2  - Journal of Engineered Fibers and Fabrics
T1  - Studying the influence of common wet processes on the quality of 1 × 1 rib cotton/elastane knitted fabrics
VL  - 17
SP  - 155892502211455
DO  - 10.1177/15589250221145522
ER  - 

@article{
author = "Ivanovska, Aleksandra and Dojčinović, Biljana and Mangovska, Biljana",
year = "2022",
abstract = "This research studied the influence of common wet processes (i.e. bleaching, dyeing, or softening) on the quality of 1 × 1 rib cotton/elastane knitted fabrics. The changes in their structural (thickness, weight, and stitch density) parameters, mechanical (bursting elongation and stiffness), comfort (air permeability and moisture sorption), and esthetic (pilling propensity) properties are discussed as an influence of the used elastane type (multifilament or monofilament), and content (4% or 8%), and applied wet processes. The severity of the bleaching process (high pH value and boiling temperature) and the resulting fabrics’ less compact structure contributed to a 17.3% higher bursting elongation of bleached compared to the dyed fabrics. Fabrics having a higher content of less finner elastane (8%, 235 dtex) have 40% and up to 21% higher stiffness and bursting elongation than fabrics containing 4% elastane of 78 dtex. The aforementioned fabrics (having 4% elastane) are softer and more comfortable since they are characterized by up to 37.9% and 5.6% higher air permeability and moisture sorption than fabrics having 8% elastane. Dyed knitted fabrics provided a better intensity of warm/cool feeling than the bleached ones due to the better comfort properties. Up to 5000 pilling cycles, the fabrics’ pilling propensity increased with an increase in elastane fineness, while at the same number of pilling cycles, dyed fabrics have a lower pilling propensity than the bleached ones. The calculated complex criterion of fabrics’ quality revealed that pilling propensity and stiffness are the main contributors to their quality that ranged from excellent to satisfying. The “satisfying” fabric quality was improved to “good” by softening with silicone softener, whereby the high content of silicon (197.51 μg/g, assessed by ICP-OES) within the bleached fabric having 8% elastane contributed to lower piling propensity compared to the corresponding non-softened fabric.",
publisher = "SAGE Publications",
journal = "Journal of Engineered Fibers and Fabrics",
title = "Studying the influence of common wet processes on the quality of 1 × 1 rib cotton/elastane knitted fabrics",
volume = "17",
pages = "155892502211455",
doi = "10.1177/15589250221145522"
}

Ivanovska, A., Dojčinović, B.,& Mangovska, B.. (2022). Studying the influence of common wet processes on the quality of 1 × 1 rib cotton/elastane knitted fabrics. in Journal of Engineered Fibers and Fabrics
SAGE Publications., 17, 155892502211455.
https://doi.org/10.1177/15589250221145522

Ivanovska A, Dojčinović B, Mangovska B. Studying the influence of common wet processes on the quality of 1 × 1 rib cotton/elastane knitted fabrics. in Journal of Engineered Fibers and Fabrics. 2022;17:155892502211455.
doi:10.1177/15589250221145522 .

Ivanovska, Aleksandra, Dojčinović, Biljana, Mangovska, Biljana, "Studying the influence of common wet processes on the quality of 1 × 1 rib cotton/elastane knitted fabrics" in Journal of Engineered Fibers and Fabrics, 17 (2022):155892502211455,
https://doi.org/10.1177/15589250221145522 . .

TY  - CONF
AU  - Ivanovska, Aleksandra
AU  - Asanović, Koviljka
AU  - Cerović, Dragana
AU  - Pavun, Leposava
AU  - Dojčinović, Biljana
AU  - Mihajlovski, Katarina
AU  - Kostić, Mirjana
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7546
AB  - This study aims to obtain multifunctional jute fabrics by using simple alkaliand oxidative protocols. Performed chemical treatments contributed to obtaining jute fabricswith enhanced electro-physical and sorption properties. Moreover, the jute fabrics werefunctionalized by incorporation of Ag+ (resulted in decreased volume electrical resistivityand excellent antibacterial activity) and in-situ synthesis of Cu-based nanoparticles (resultedin 38-88 times higher energy storage from an external electric field). Following the increasedfocus on the concept of circular economy, the possibility of jute fabric waste revalorizationfor wastewater purification (from Cu2+, Zn2+, Ni2+) was examined.
AB  - Cilj ovog istraživanja je dobijanje multifunkcionalnih tkanina od juteupotrebom jednostavnih alkalnih i oksidativnih postupaka. Ovi hemijski tretmani omogućilisu dobijanje tkanina od jute sa poboljšanim elektro-fizičkim i sorpcionim svojstvima.Tkanine od jute su, takođe, bile funkcionalizovane jonima srebra (što je rezultovalosmanjenom specifičnom zapreminskom električnom otpornošću i odličnom antibakterijskomaktivnošću) i in-situ sintezom nanočestica na bazi bakra (što je rezultovalo 38-88 puta većimskladištenjem energije iz spoljašnjeg električnog polja). U skladu sa načelima cirkularneekonomije, ispitana je mogućnost revalorizacije otpada tkanina od jute za prečišćavanjeotpadnih voda (od Cu2+, Zn2+, Ni2+- jona).
PB  - Belgrade : Union of Engineers and Textile Technicians of Serbia
C3  - Proceedings / IV International Scientific Conference Contemporary Trends and Innovations in the Textile Industry, CT&ITI 2021, Belgrade, 16-17 th September, 2021
T1  - Simple protocols for obtaining multifunctional jute fabrics
T1  - Jednostavni postupci za dobijanje multifunkcionalnih tkanina od jute
SP  - 3
EP  - 12
UR  - https://hdl.handle.net/21.15107/rcub_cer_7546
ER  - 

@conference{
author = "Ivanovska, Aleksandra and Asanović, Koviljka and Cerović, Dragana and Pavun, Leposava and Dojčinović, Biljana and Mihajlovski, Katarina and Kostić, Mirjana",
year = "2021",
abstract = "This study aims to obtain multifunctional jute fabrics by using simple alkaliand oxidative protocols. Performed chemical treatments contributed to obtaining jute fabricswith enhanced electro-physical and sorption properties. Moreover, the jute fabrics werefunctionalized by incorporation of Ag+ (resulted in decreased volume electrical resistivityand excellent antibacterial activity) and in-situ synthesis of Cu-based nanoparticles (resultedin 38-88 times higher energy storage from an external electric field). Following the increasedfocus on the concept of circular economy, the possibility of jute fabric waste revalorizationfor wastewater purification (from Cu2+, Zn2+, Ni2+) was examined., Cilj ovog istraživanja je dobijanje multifunkcionalnih tkanina od juteupotrebom jednostavnih alkalnih i oksidativnih postupaka. Ovi hemijski tretmani omogućilisu dobijanje tkanina od jute sa poboljšanim elektro-fizičkim i sorpcionim svojstvima.Tkanine od jute su, takođe, bile funkcionalizovane jonima srebra (što je rezultovalosmanjenom specifičnom zapreminskom električnom otpornošću i odličnom antibakterijskomaktivnošću) i in-situ sintezom nanočestica na bazi bakra (što je rezultovalo 38-88 puta većimskladištenjem energije iz spoljašnjeg električnog polja). U skladu sa načelima cirkularneekonomije, ispitana je mogućnost revalorizacije otpada tkanina od jute za prečišćavanjeotpadnih voda (od Cu2+, Zn2+, Ni2+- jona).",
publisher = "Belgrade : Union of Engineers and Textile Technicians of Serbia",
journal = "Proceedings / IV International Scientific Conference Contemporary Trends and Innovations in the Textile Industry, CT&ITI 2021, Belgrade, 16-17 th September, 2021",
title = "Simple protocols for obtaining multifunctional jute fabrics, Jednostavni postupci za dobijanje multifunkcionalnih tkanina od jute",
pages = "3-12",
url = "https://hdl.handle.net/21.15107/rcub_cer_7546"
}

Ivanovska, A., Asanović, K., Cerović, D., Pavun, L., Dojčinović, B., Mihajlovski, K.,& Kostić, M.. (2021). Simple protocols for obtaining multifunctional jute fabrics. in Proceedings / IV International Scientific Conference Contemporary Trends and Innovations in the Textile Industry, CT&ITI 2021, Belgrade, 16-17 th September, 2021
Belgrade : Union of Engineers and Textile Technicians of Serbia., 3-12.
https://hdl.handle.net/21.15107/rcub_cer_7546

Ivanovska A, Asanović K, Cerović D, Pavun L, Dojčinović B, Mihajlovski K, Kostić M. Simple protocols for obtaining multifunctional jute fabrics. in Proceedings / IV International Scientific Conference Contemporary Trends and Innovations in the Textile Industry, CT&ITI 2021, Belgrade, 16-17 th September, 2021. 2021;:3-12.
https://hdl.handle.net/21.15107/rcub_cer_7546 .

Ivanovska, Aleksandra, Asanović, Koviljka, Cerović, Dragana, Pavun, Leposava, Dojčinović, Biljana, Mihajlovski, Katarina, Kostić, Mirjana, "Simple protocols for obtaining multifunctional jute fabrics" in Proceedings / IV International Scientific Conference Contemporary Trends and Innovations in the Textile Industry, CT&ITI 2021, Belgrade, 16-17 th September, 2021 (2021):3-12,
https://hdl.handle.net/21.15107/rcub_cer_7546 .

TY  - JOUR
AU  - Ivanovska, Aleksandra
AU  - Pavun, Leposava
AU  - Dojčinović, Biljana
AU  - Kostić, Mirjana
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4758
AB  - Raw jute fabric was chemically modified with 1 % NaOH for 30 min, 17.5 % NaOH for 5 min or with 0.7 % NaClO2 for 30 and 60 min to study the influence of changes in the chemical composition of the fabrics and quantity of carboxyl groups on the biosorption capacity of the fabrics for nickel ions. The effects of contact time and initial concentration of nickel ions on the biosorption capacity of the fabrics were also investigated. The obtained results revealed that the biosorption of nickel ions can be explained by the pseudo-second-order kinetic model, while the experimental isotherm data fit better with the Langmuir model. The calculated ratios between maximal biosorption capacity (6.30-12.06 mg g-1) of the jute fabrics and carboxyl group quantity indicated that approximately half of the carboxyl groups of the fabrics' would be involved in binding nickel ions during biosorption. Therefore, the quantity of carboxyl groups can be used to predict the maximal biosorption capacity of jute fabrics toward nickel ions. In the case of oxidized jute fabrics, the lignin removal, and consequently increased content of cellulose and hemicelluloses, also contributed to a higher biosorption capacity.
AB  - Сирова тканина од јуте је хемијски модификована 1 % NaOH у току 30 min, 17,5 %
NaOH у току 5 min или 0,7 % NaClO2 у току 30 и 60 min у циљу испитивања утицаја про-
мена хемијског састава и садржаја карбоксилних група на биосорпциони капацитет тка-
нина према јонима никла. Такође, испитиван је и утицај времена контакта тканина са
раствором NiSO4 и почетне концентрације раствора никла на биосорпциони капацитет
тканина од јуте. Добијени резултати указују на то да се процес биосорпције никла може
описати кинетичким моделом псеудо-другог реда, а равнотежне вредности добијене за
сорпцију никла се боље слажу са Langmuir адсорпционом изотермом. Израчунати однос
између максималних биосорпционих капацитета тканина од јуте (6,30–12,06 mg g-1) и
садржаја карбоксилних група указују на то да ће приближно половина карбоксилних
група учествовати у везивању јона никла током биосорпције. Према томе, садржај кар-
боксилних група се може користити као индикатор максималног биосорпционог капа-
цитета тканина од јуте према јонима никла. Код оксидисане тканине, уклањање лигнина
које је праћено са повећањем садржаја целулозе и хемицелулоза је такође допринело
већем биосорпционом капацитету.
PB  - Belgrade : Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Kinetic and isotherm studies for the biosorption of nickel ions by jute fabrics
T1  - Биосорпција јона никла на тканинама од јуте:кинетичка и изотермска испитивања
VL  - 86
IS  - 9
SP  - 885
EP  - 897
DO  - 10.2298/JSC210209030I
ER  - 

@article{
author = "Ivanovska, Aleksandra and Pavun, Leposava and Dojčinović, Biljana and Kostić, Mirjana",
year = "2021",
abstract = "Raw jute fabric was chemically modified with 1 % NaOH for 30 min, 17.5 % NaOH for 5 min or with 0.7 % NaClO2 for 30 and 60 min to study the influence of changes in the chemical composition of the fabrics and quantity of carboxyl groups on the biosorption capacity of the fabrics for nickel ions. The effects of contact time and initial concentration of nickel ions on the biosorption capacity of the fabrics were also investigated. The obtained results revealed that the biosorption of nickel ions can be explained by the pseudo-second-order kinetic model, while the experimental isotherm data fit better with the Langmuir model. The calculated ratios between maximal biosorption capacity (6.30-12.06 mg g-1) of the jute fabrics and carboxyl group quantity indicated that approximately half of the carboxyl groups of the fabrics' would be involved in binding nickel ions during biosorption. Therefore, the quantity of carboxyl groups can be used to predict the maximal biosorption capacity of jute fabrics toward nickel ions. In the case of oxidized jute fabrics, the lignin removal, and consequently increased content of cellulose and hemicelluloses, also contributed to a higher biosorption capacity., Сирова тканина од јуте је хемијски модификована 1 % NaOH у току 30 min, 17,5 %
NaOH у току 5 min или 0,7 % NaClO2 у току 30 и 60 min у циљу испитивања утицаја про-
мена хемијског састава и садржаја карбоксилних група на биосорпциони капацитет тка-
нина према јонима никла. Такође, испитиван је и утицај времена контакта тканина са
раствором NiSO4 и почетне концентрације раствора никла на биосорпциони капацитет
тканина од јуте. Добијени резултати указују на то да се процес биосорпције никла може
описати кинетичким моделом псеудо-другог реда, а равнотежне вредности добијене за
сорпцију никла се боље слажу са Langmuir адсорпционом изотермом. Израчунати однос
између максималних биосорпционих капацитета тканина од јуте (6,30–12,06 mg g-1) и
садржаја карбоксилних група указују на то да ће приближно половина карбоксилних
група учествовати у везивању јона никла током биосорпције. Према томе, садржај кар-
боксилних група се може користити као индикатор максималног биосорпционог капа-
цитета тканина од јуте према јонима никла. Код оксидисане тканине, уклањање лигнина
које је праћено са повећањем садржаја целулозе и хемицелулоза је такође допринело
већем биосорпционом капацитету.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Kinetic and isotherm studies for the biosorption of nickel ions by jute fabrics, Биосорпција јона никла на тканинама од јуте:кинетичка и изотермска испитивања",
volume = "86",
number = "9",
pages = "885-897",
doi = "10.2298/JSC210209030I"
}

Ivanovska, A., Pavun, L., Dojčinović, B.,& Kostić, M.. (2021). Kinetic and isotherm studies for the biosorption of nickel ions by jute fabrics. in Journal of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 86(9), 885-897.
https://doi.org/10.2298/JSC210209030I

Ivanovska A, Pavun L, Dojčinović B, Kostić M. Kinetic and isotherm studies for the biosorption of nickel ions by jute fabrics. in Journal of the Serbian Chemical Society. 2021;86(9):885-897.
doi:10.2298/JSC210209030I .

Ivanovska, Aleksandra, Pavun, Leposava, Dojčinović, Biljana, Kostić, Mirjana, "Kinetic and isotherm studies for the biosorption of nickel ions by jute fabrics" in Journal of the Serbian Chemical Society, 86, no. 9 (2021):885-897,
https://doi.org/10.2298/JSC210209030I . .

TY  - JOUR
AU  - Ivanovska, Aleksandra
AU  - Veljović, Sonja
AU  - Dojčinović, Biljana
AU  - Tadić, Nenad
AU  - Mihajlovski, Katarina
AU  - Natić, Maja
AU  - Kostić, Mirjana
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4772
AB  - In this investigation, the possibility of wood waste (hardwoods such as oaks' and alternatives' staves from Balkan cooperage) revalorization for simultaneous cadmium removal and wastewater disinfection was examined. All samples were characterized in terms of their crystallinity index and crystallite size, amount of functional groups, and surface chemistry (determined by ATR-FTIR) as well as antibacterial activity. Mulberry is characterized by the lowest crystallinity index which can be ascribed to the highest crystallite size disabling crystallite denser packaging, while myrobalan plum has about 23% lower crystallite size that enables crystallite better packaging, thus resulting in a 42.4% higher crystallinity index compared to the mulberry. All oaks have a significantly higher amount of carboxyl groups compared to the alternatives (0.23-0.28 vs. 0.12-0.19 mmol/g). The adsorption experiments revealed that with increasing the initial cadmium concentration from 15 up to 55 mg/g, samples' adsorption capacity increases by 89-220%. The equilibrium data fit well with the Langmuir isotherm model implying monolayer coverage of cadmium ions over a homogeneous wood surface. The relationship between the samples' maximum adsorption capacities (ranged from 5.726 to 12.618 mg/g), their crystallinity index, and crystallite size was established. According to ATR-FTIR spectra, aldehyde, carboxyl, hydroxyl, and phenyl groups present on the wood waste surface are involved in Cd2+ adsorption which proceeds via the interplay of the complexation, cation-π interactions, and ion-exchange mechanisms. Mulberry and myrobalan plum showed about 89% and 80% of the total uptake capacity of cadmium within 60 min, while the equilibrium was attained after 240 min of contact time. Good compliance with pseudo-second kinetic order indicated that cadmium adsorption was mediated by chemical forces. Thermodynamic parameters revealed the spontaneous and exothermic character of cadmium ion adsorption onto mulberry and myrobalan plum. All studied samples provide maximum bacterial reduction (>99%) for E. coli and S. aureus. Wood waste from Balkan cooperage can be successfully used for simultaneous cadmium removal and wastewater disinfection.
PB  - Hindawi Limited
T2  - Adsorption Science & Technology
T1  - A Strategy to Revalue a Wood Waste for Simultaneous Cadmium Removal and Wastewater Disinfection
VL  - 2021
SP  - 3552300
DO  - 10.1155/2021/3552300
ER  - 

@article{
author = "Ivanovska, Aleksandra and Veljović, Sonja and Dojčinović, Biljana and Tadić, Nenad and Mihajlovski, Katarina and Natić, Maja and Kostić, Mirjana",
year = "2021",
abstract = "In this investigation, the possibility of wood waste (hardwoods such as oaks' and alternatives' staves from Balkan cooperage) revalorization for simultaneous cadmium removal and wastewater disinfection was examined. All samples were characterized in terms of their crystallinity index and crystallite size, amount of functional groups, and surface chemistry (determined by ATR-FTIR) as well as antibacterial activity. Mulberry is characterized by the lowest crystallinity index which can be ascribed to the highest crystallite size disabling crystallite denser packaging, while myrobalan plum has about 23% lower crystallite size that enables crystallite better packaging, thus resulting in a 42.4% higher crystallinity index compared to the mulberry. All oaks have a significantly higher amount of carboxyl groups compared to the alternatives (0.23-0.28 vs. 0.12-0.19 mmol/g). The adsorption experiments revealed that with increasing the initial cadmium concentration from 15 up to 55 mg/g, samples' adsorption capacity increases by 89-220%. The equilibrium data fit well with the Langmuir isotherm model implying monolayer coverage of cadmium ions over a homogeneous wood surface. The relationship between the samples' maximum adsorption capacities (ranged from 5.726 to 12.618 mg/g), their crystallinity index, and crystallite size was established. According to ATR-FTIR spectra, aldehyde, carboxyl, hydroxyl, and phenyl groups present on the wood waste surface are involved in Cd2+ adsorption which proceeds via the interplay of the complexation, cation-π interactions, and ion-exchange mechanisms. Mulberry and myrobalan plum showed about 89% and 80% of the total uptake capacity of cadmium within 60 min, while the equilibrium was attained after 240 min of contact time. Good compliance with pseudo-second kinetic order indicated that cadmium adsorption was mediated by chemical forces. Thermodynamic parameters revealed the spontaneous and exothermic character of cadmium ion adsorption onto mulberry and myrobalan plum. All studied samples provide maximum bacterial reduction (>99%) for E. coli and S. aureus. Wood waste from Balkan cooperage can be successfully used for simultaneous cadmium removal and wastewater disinfection.",
publisher = "Hindawi Limited",
journal = "Adsorption Science & Technology",
title = "A Strategy to Revalue a Wood Waste for Simultaneous Cadmium Removal and Wastewater Disinfection",
volume = "2021",
pages = "3552300",
doi = "10.1155/2021/3552300"
}

Ivanovska, A., Veljović, S., Dojčinović, B., Tadić, N., Mihajlovski, K., Natić, M.,& Kostić, M.. (2021). A Strategy to Revalue a Wood Waste for Simultaneous Cadmium Removal and Wastewater Disinfection. in Adsorption Science & Technology
Hindawi Limited., 2021, 3552300.
https://doi.org/10.1155/2021/3552300

Ivanovska A, Veljović S, Dojčinović B, Tadić N, Mihajlovski K, Natić M, Kostić M. A Strategy to Revalue a Wood Waste for Simultaneous Cadmium Removal and Wastewater Disinfection. in Adsorption Science & Technology. 2021;2021:3552300.
doi:10.1155/2021/3552300 .

Ivanovska, Aleksandra, Veljović, Sonja, Dojčinović, Biljana, Tadić, Nenad, Mihajlovski, Katarina, Natić, Maja, Kostić, Mirjana, "A Strategy to Revalue a Wood Waste for Simultaneous Cadmium Removal and Wastewater Disinfection" in Adsorption Science & Technology, 2021 (2021):3552300,
https://doi.org/10.1155/2021/3552300 . .

TY  - JOUR
AU  - Ivanovska, Aleksandra
AU  - Lađarević, Jelena
AU  - Pavun, Leposava
AU  - Dojčinović, Biljana
AU  - Cvijetić, Ilija
AU  - Mijin, Dušan
AU  - Kostić, Mirjana
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4779
AB  - The objective of this investigation was to obtain jute fabrics with enhanced sorption properties (by using simple and cost-effective alkali and oxidative modifications) and a long life cycle. The applied alkali modifications lead to hemicellulose removal and decreased the fibers’ crystallinity, both contributing to enhanced fibers’ sorption properties, i.e., water retention power and degree of fibers’ swelling up to 49 % and 70 %, respectively. A connection between cellulose polymorphs’ (cellulose I and cellulose II) contents (determined by XRD), fibers’ surface morphology (verified by FESEM), fabrics’ crimp, and capillarity of jute fabrics modified with 17.5 % NaOH was established. During the oxidative modifications, significant changes in jute fibers’ chemical composition and structure (i.e., lignin removal and more homogeneous middle lamellae) occurred which further resulted in enhanced jute fabrics’ water retention power and capillarity as well as fibers’ swelling up to 80 %, 75 %, and 54 %, compared to the raw jute, respectively. In order to move towards a circular economy and to ensure the recycling and re-use of recycled fabrics, the jute fabrics with enhanced sorption properties were evaluated as biosorbents for anthraquinone dye C. I. Acid Blue 111. The obtained results revealed that the jute fabrics’ maximum biosorption capacities for this dye ranged from 12.94 to 18.97 mg/g, while the equilibrium adsorption data were highly consistent with the Langmuir isotherm model. Moreover, based on the predicted dye pKa values, the fabric zeta potential, content of carboxyl and aldehyde groups as well as hydrogen bond intensity (determined by ATR-FTIR), a possible mechanism of the dye biosorption onto jute fabric waste was proposed.
PB  - Elsevier
T2  - Industrial Crops & Products
T1  - Obtaining jute fabrics with enhanced sorption properties and “closing the loop” of their lifecycle
VL  - 171
SP  - 113913
DO  - 10.1016/j.indcrop.2021.113913
ER  - 

@article{
author = "Ivanovska, Aleksandra and Lađarević, Jelena and Pavun, Leposava and Dojčinović, Biljana and Cvijetić, Ilija and Mijin, Dušan and Kostić, Mirjana",
year = "2021",
abstract = "The objective of this investigation was to obtain jute fabrics with enhanced sorption properties (by using simple and cost-effective alkali and oxidative modifications) and a long life cycle. The applied alkali modifications lead to hemicellulose removal and decreased the fibers’ crystallinity, both contributing to enhanced fibers’ sorption properties, i.e., water retention power and degree of fibers’ swelling up to 49 % and 70 %, respectively. A connection between cellulose polymorphs’ (cellulose I and cellulose II) contents (determined by XRD), fibers’ surface morphology (verified by FESEM), fabrics’ crimp, and capillarity of jute fabrics modified with 17.5 % NaOH was established. During the oxidative modifications, significant changes in jute fibers’ chemical composition and structure (i.e., lignin removal and more homogeneous middle lamellae) occurred which further resulted in enhanced jute fabrics’ water retention power and capillarity as well as fibers’ swelling up to 80 %, 75 %, and 54 %, compared to the raw jute, respectively. In order to move towards a circular economy and to ensure the recycling and re-use of recycled fabrics, the jute fabrics with enhanced sorption properties were evaluated as biosorbents for anthraquinone dye C. I. Acid Blue 111. The obtained results revealed that the jute fabrics’ maximum biosorption capacities for this dye ranged from 12.94 to 18.97 mg/g, while the equilibrium adsorption data were highly consistent with the Langmuir isotherm model. Moreover, based on the predicted dye pKa values, the fabric zeta potential, content of carboxyl and aldehyde groups as well as hydrogen bond intensity (determined by ATR-FTIR), a possible mechanism of the dye biosorption onto jute fabric waste was proposed.",
publisher = "Elsevier",
journal = "Industrial Crops & Products",
title = "Obtaining jute fabrics with enhanced sorption properties and “closing the loop” of their lifecycle",
volume = "171",
pages = "113913",
doi = "10.1016/j.indcrop.2021.113913"
}

Ivanovska, A., Lađarević, J., Pavun, L., Dojčinović, B., Cvijetić, I., Mijin, D.,& Kostić, M.. (2021). Obtaining jute fabrics with enhanced sorption properties and “closing the loop” of their lifecycle. in Industrial Crops & Products
Elsevier., 171, 113913.
https://doi.org/10.1016/j.indcrop.2021.113913

Ivanovska A, Lađarević J, Pavun L, Dojčinović B, Cvijetić I, Mijin D, Kostić M. Obtaining jute fabrics with enhanced sorption properties and “closing the loop” of their lifecycle. in Industrial Crops & Products. 2021;171:113913.
doi:10.1016/j.indcrop.2021.113913 .

Ivanovska, Aleksandra, Lađarević, Jelena, Pavun, Leposava, Dojčinović, Biljana, Cvijetić, Ilija, Mijin, Dušan, Kostić, Mirjana, "Obtaining jute fabrics with enhanced sorption properties and “closing the loop” of their lifecycle" in Industrial Crops & Products, 171 (2021):113913,
https://doi.org/10.1016/j.indcrop.2021.113913 . .

TY  - JOUR
AU  - Ivanovska, Aleksandra
AU  - Dojčinović, Biljana
AU  - Maletić, S.
AU  - Pavun, Leposava
AU  - Asanović, Koviljka
AU  - Kostic, M.
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3856
AB  - The influence of the chemical composition on the biosorption potential of waste jute fabric for Ni2+, Cu2+, and Zn2+ was investigated. The raw jute fabric was treated with sodium hydroxide or sodium chlorite to selectively remove hemicelluloses and lignin, respectively. All jute fabrics were characterized by determination of their chemical composition as well as functional group content. The effects of solution pH, contact time, and initial metal ion concentration on the biosorption from monometallic and polymetallic solution by jute fabrics were investigated. The maximum biosorption capacity for all heavy metal ions was observed at pH 5.5. Concerning the contact time, the raw jute fabric shows more than 72 % of the total uptake capacity of Ni2+, Cu2+, and Zn2+ within 1 h, while the jute fabrics with lower hemicelluloses and lignin content show between 72–85 % of the total uptake capacity within 3 h. Increased initial metal ion concentration from 10 to 20 mg/l in monometallic solution caused an increase in the total uptake capacity of jute fabrics with lower hemicelluloses and lignin content for 47–69 % (Ni2+), 42–63 % (Cu2+), and 22–37 % (Zn2+). The biosorption capacity of alkali treated jute fabrics was affected by the changes in the total amount of carboxyl and aldehyde groups that accompany the hemicelluloses removal. In the case of the oxidative treatment, the biosorption capacity was affected by the lignin content as well as the amount of introduced carboxyl groups. The best biosorption performance possesses jute fabric with 63.2 % lower lignin content as well as 81.1 % higher amount of carboxyl groups; biosorption capacity toward Ni2+, Cu2+, and Zn2+ in monometallic solution is about 2.4; 2.2 and 3.5 times higher compared to the raw jute fabric, respectively. All jute fabrics exhibited the same affinity order (which is independent on the initial metal ion concentrations) toward heavy metal ions: Ni2+ > Cu2+ > Zn2+ in the case of competitive biosorption. An increase in the initial metal ion concentration for two times in the polymetallic solution caused about a 35–59 % increase in the total uptake capacity of Ni2+, while the total uptake capacities of Cu2+ and Zn2+ increased for 19–38 % and 18–65 %, respectively.
PB  - Springer
T2  - Fibers and Polymers
T1  - Waste Jute Fabric as a Biosorbent for Heavy Metal Ions from Aqueous Solution
VL  - 21
IS  - 9
SP  - 1992
EP  - 2002
DO  - 10.1007/s12221-020-9639-8
ER  - 

@article{
author = "Ivanovska, Aleksandra and Dojčinović, Biljana and Maletić, S. and Pavun, Leposava and Asanović, Koviljka and Kostic, M.",
year = "2020",
abstract = "The influence of the chemical composition on the biosorption potential of waste jute fabric for Ni2+, Cu2+, and Zn2+ was investigated. The raw jute fabric was treated with sodium hydroxide or sodium chlorite to selectively remove hemicelluloses and lignin, respectively. All jute fabrics were characterized by determination of their chemical composition as well as functional group content. The effects of solution pH, contact time, and initial metal ion concentration on the biosorption from monometallic and polymetallic solution by jute fabrics were investigated. The maximum biosorption capacity for all heavy metal ions was observed at pH 5.5. Concerning the contact time, the raw jute fabric shows more than 72 % of the total uptake capacity of Ni2+, Cu2+, and Zn2+ within 1 h, while the jute fabrics with lower hemicelluloses and lignin content show between 72–85 % of the total uptake capacity within 3 h. Increased initial metal ion concentration from 10 to 20 mg/l in monometallic solution caused an increase in the total uptake capacity of jute fabrics with lower hemicelluloses and lignin content for 47–69 % (Ni2+), 42–63 % (Cu2+), and 22–37 % (Zn2+). The biosorption capacity of alkali treated jute fabrics was affected by the changes in the total amount of carboxyl and aldehyde groups that accompany the hemicelluloses removal. In the case of the oxidative treatment, the biosorption capacity was affected by the lignin content as well as the amount of introduced carboxyl groups. The best biosorption performance possesses jute fabric with 63.2 % lower lignin content as well as 81.1 % higher amount of carboxyl groups; biosorption capacity toward Ni2+, Cu2+, and Zn2+ in monometallic solution is about 2.4; 2.2 and 3.5 times higher compared to the raw jute fabric, respectively. All jute fabrics exhibited the same affinity order (which is independent on the initial metal ion concentrations) toward heavy metal ions: Ni2+ > Cu2+ > Zn2+ in the case of competitive biosorption. An increase in the initial metal ion concentration for two times in the polymetallic solution caused about a 35–59 % increase in the total uptake capacity of Ni2+, while the total uptake capacities of Cu2+ and Zn2+ increased for 19–38 % and 18–65 %, respectively.",
publisher = "Springer",
journal = "Fibers and Polymers",
title = "Waste Jute Fabric as a Biosorbent for Heavy Metal Ions from Aqueous Solution",
volume = "21",
number = "9",
pages = "1992-2002",
doi = "10.1007/s12221-020-9639-8"
}

Ivanovska, A., Dojčinović, B., Maletić, S., Pavun, L., Asanović, K.,& Kostic, M.. (2020). Waste Jute Fabric as a Biosorbent for Heavy Metal Ions from Aqueous Solution. in Fibers and Polymers
Springer., 21(9), 1992-2002.
https://doi.org/10.1007/s12221-020-9639-8

Ivanovska A, Dojčinović B, Maletić S, Pavun L, Asanović K, Kostic M. Waste Jute Fabric as a Biosorbent for Heavy Metal Ions from Aqueous Solution. in Fibers and Polymers. 2020;21(9):1992-2002.
doi:10.1007/s12221-020-9639-8 .

Ivanovska, Aleksandra, Dojčinović, Biljana, Maletić, S., Pavun, Leposava, Asanović, Koviljka, Kostic, M., "Waste Jute Fabric as a Biosorbent for Heavy Metal Ions from Aqueous Solution" in Fibers and Polymers, 21, no. 9 (2020):1992-2002,
https://doi.org/10.1007/s12221-020-9639-8 . .