TY  - CONF
AU  - Nešić, Aleksandra
AU  - Meseldžija, Slađana
AU  - Momčilović, Milan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12655
AB  - The subject of this work is synthesis and characterization of pectin-based cryogels obtained by internal crosslinking with calcium ions. The crosslinking reaction was confirmed by FTIR/ATR analysis, while SEM analysis demonstrated that pores of obtained cryogel were in macro range (between 130 and 380 µm). Pectin cryogel had high swelling degree with the value of 800% after 24 h of immersion in distilled water, and high water vapor permeability (E-7 order, g/ m s Pa). In addition, it showed high rate of biodegradation (85%) after exposure of 3 months in the soil. The obtained results suggest that pectin cryogel obtained by internal crosslinking reaction might find applicable potential in food, agriculture and separation technologies, providing an eco-sustainable approach to tackle current ecological and economical stresses.
PB  - University of Belgrade : Technical Faculty in Bor
C3  - EcoTER’23 : 30th International Conference Ecological Truth and Environmental Research : Proceedings
T1  - Sustainable pectin monolith cryogels
SP  - 88
EP  - 93
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12655
ER  - 

@conference{
author = "Nešić, Aleksandra and Meseldžija, Slađana and Momčilović, Milan",
year = "2023",
abstract = "The subject of this work is synthesis and characterization of pectin-based cryogels obtained by internal crosslinking with calcium ions. The crosslinking reaction was confirmed by FTIR/ATR analysis, while SEM analysis demonstrated that pores of obtained cryogel were in macro range (between 130 and 380 µm). Pectin cryogel had high swelling degree with the value of 800% after 24 h of immersion in distilled water, and high water vapor permeability (E-7 order, g/ m s Pa). In addition, it showed high rate of biodegradation (85%) after exposure of 3 months in the soil. The obtained results suggest that pectin cryogel obtained by internal crosslinking reaction might find applicable potential in food, agriculture and separation technologies, providing an eco-sustainable approach to tackle current ecological and economical stresses.",
publisher = "University of Belgrade : Technical Faculty in Bor",
journal = "EcoTER’23 : 30th International Conference Ecological Truth and Environmental Research : Proceedings",
title = "Sustainable pectin monolith cryogels",
pages = "88-93",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12655"
}

Nešić, A., Meseldžija, S.,& Momčilović, M.. (2023). Sustainable pectin monolith cryogels. in EcoTER’23 : 30th International Conference Ecological Truth and Environmental Research : Proceedings
University of Belgrade : Technical Faculty in Bor., 88-93.
https://hdl.handle.net/21.15107/rcub_vinar_12655

Nešić A, Meseldžija S, Momčilović M. Sustainable pectin monolith cryogels. in EcoTER’23 : 30th International Conference Ecological Truth and Environmental Research : Proceedings. 2023;:88-93.
https://hdl.handle.net/21.15107/rcub_vinar_12655 .

Nešić, Aleksandra, Meseldžija, Slađana, Momčilović, Milan, "Sustainable pectin monolith cryogels" in EcoTER’23 : 30th International Conference Ecological Truth and Environmental Research : Proceedings (2023):88-93,
https://hdl.handle.net/21.15107/rcub_vinar_12655 .

TY  - JOUR
AU  - Nešić, Aleksandra
AU  - Kokunešoski, Maja
AU  - Meseldžija, Slađana
AU  - Volkov-Husović, Tatjana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12664
AB  - The textile industry is one of the largest water-consuming industries in the world. The wastewater generated by the textile industry is a major source of pollution, containing mostly dyes, but also detergents, and heavy metals. Since dyes can have a negative impact on the environment, human and aquatic life, it is really important to find proper solutions for removal of these pollutants from wastewater. In addition, special attention is given to the discovery of new and fast "in situ" methods for identification and quantification of pollutants from wastewater. In this paper, SBA-15, mesoporous silica material, was used as sorbent for removal of Basic Yellow 28 from aqueous solutions. In addition, colored SBA-15 after sorption process was subjected to image analysis, to evaluate if it was possible to quantify sorbed dye on sorbent based on intensity of SBA-15 coloration. The obtained results revealed that SBA-15 could remove 99% of dye within 5 min. The highest efficiency of dye removal was at pH8, using 200 mg of sorbent. According to the Langmuir isotherm model, the theoretical maximum sorption capacity was 909 mg/g. Image-Pro software confirmed that it would be possible to quantify sorbed dye onto SBA-15 with accuracy of 0.98. Overall, SBA-15 demonstrated to be efficient sorbent in removal of Basic Yellow 28 from water, but also to be potential carrier as a sensor for detection of colored pollutants in water.
AB  - Tekstilna industrija je jedna od najvećih potrošača vode u odnosu na druge industrijske grane. Otpadne vode iz tekstilne industrije su jedan od glavnih izvora zagađenja i uglavnom sadrže boje, ali takođe i deterdžente i teške metale. Pošto boje mogu imati negativan uticaj na životnu sredinu, ljude i vodeni svet, važno je pronaći odgovarajuća rešenja za uklanjanje ovih zagađivača iz otpadnih voda. Pored toga, posebna pažnja je posvećena otkrivanju novih i brzih „in situ” metoda za identifikaciju i kvantifikaciju zagađivača iz otpadnih voda. U ovom radu kao sorbent za uklanjanje Basic Yellow 28 boje iz vodenih rastvora korišćen je SBA-15, mezoporozni silika materijal. Pored toga, obojeni SBA-15 nakon procesa sorpcije podvrgnuti su analizi slike, kako bi se procenilo da li je moguće kvantifikovati sorbovanu boju na sorbentu na osnovu intenziteta obojenosti SBA-15. Dobijeni rezultati su pokazali da SBA-15 može ukloniti 99% boje u roku od 5 minuta. Najveća efikasnost uklanjanja boje bila je pri pH 8, korišćenjem 200 mg sorbenta. Prema Langmuirovom modelu, teoretski maksimalni kapacitet sorpcije bio je 909 mg/g. Softver Image-Pro je potvrdio da je moguće kvantifikovati boju na SBA-15 sa tačnošću od 0,98. SBA-15 se pokazao kao efikasan sorbent u uklanjanju Basic Yellow 28 boje iz vode, ali i kao potencijalni senzor za detekciju obojenih zagađivača u vodi.
T2  - Advanced Technologies
T1  - Mesoporous silica-based sensor for colorimetric determination of Basic Yellow 28 dye in aqueous solutions
T1  - Senzor na bazi mezoporozne silike za kolorimetrijsko određivanje boje Basic Yellow 28 u vodenim rastvorima
VL  - 12
IS  - 2
SP  - 37
EP  - 42
DO  - 10.5937/savteh2302036N
ER  - 

@article{
author = "Nešić, Aleksandra and Kokunešoski, Maja and Meseldžija, Slađana and Volkov-Husović, Tatjana",
year = "2023",
abstract = "The textile industry is one of the largest water-consuming industries in the world. The wastewater generated by the textile industry is a major source of pollution, containing mostly dyes, but also detergents, and heavy metals. Since dyes can have a negative impact on the environment, human and aquatic life, it is really important to find proper solutions for removal of these pollutants from wastewater. In addition, special attention is given to the discovery of new and fast "in situ" methods for identification and quantification of pollutants from wastewater. In this paper, SBA-15, mesoporous silica material, was used as sorbent for removal of Basic Yellow 28 from aqueous solutions. In addition, colored SBA-15 after sorption process was subjected to image analysis, to evaluate if it was possible to quantify sorbed dye on sorbent based on intensity of SBA-15 coloration. The obtained results revealed that SBA-15 could remove 99% of dye within 5 min. The highest efficiency of dye removal was at pH8, using 200 mg of sorbent. According to the Langmuir isotherm model, the theoretical maximum sorption capacity was 909 mg/g. Image-Pro software confirmed that it would be possible to quantify sorbed dye onto SBA-15 with accuracy of 0.98. Overall, SBA-15 demonstrated to be efficient sorbent in removal of Basic Yellow 28 from water, but also to be potential carrier as a sensor for detection of colored pollutants in water., Tekstilna industrija je jedna od najvećih potrošača vode u odnosu na druge industrijske grane. Otpadne vode iz tekstilne industrije su jedan od glavnih izvora zagađenja i uglavnom sadrže boje, ali takođe i deterdžente i teške metale. Pošto boje mogu imati negativan uticaj na životnu sredinu, ljude i vodeni svet, važno je pronaći odgovarajuća rešenja za uklanjanje ovih zagađivača iz otpadnih voda. Pored toga, posebna pažnja je posvećena otkrivanju novih i brzih „in situ” metoda za identifikaciju i kvantifikaciju zagađivača iz otpadnih voda. U ovom radu kao sorbent za uklanjanje Basic Yellow 28 boje iz vodenih rastvora korišćen je SBA-15, mezoporozni silika materijal. Pored toga, obojeni SBA-15 nakon procesa sorpcije podvrgnuti su analizi slike, kako bi se procenilo da li je moguće kvantifikovati sorbovanu boju na sorbentu na osnovu intenziteta obojenosti SBA-15. Dobijeni rezultati su pokazali da SBA-15 može ukloniti 99% boje u roku od 5 minuta. Najveća efikasnost uklanjanja boje bila je pri pH 8, korišćenjem 200 mg sorbenta. Prema Langmuirovom modelu, teoretski maksimalni kapacitet sorpcije bio je 909 mg/g. Softver Image-Pro je potvrdio da je moguće kvantifikovati boju na SBA-15 sa tačnošću od 0,98. SBA-15 se pokazao kao efikasan sorbent u uklanjanju Basic Yellow 28 boje iz vode, ali i kao potencijalni senzor za detekciju obojenih zagađivača u vodi.",
journal = "Advanced Technologies",
title = "Mesoporous silica-based sensor for colorimetric determination of Basic Yellow 28 dye in aqueous solutions, Senzor na bazi mezoporozne silike za kolorimetrijsko određivanje boje Basic Yellow 28 u vodenim rastvorima",
volume = "12",
number = "2",
pages = "37-42",
doi = "10.5937/savteh2302036N"
}

Nešić, A., Kokunešoski, M., Meseldžija, S.,& Volkov-Husović, T.. (2023). Mesoporous silica-based sensor for colorimetric determination of Basic Yellow 28 dye in aqueous solutions. in Advanced Technologies, 12(2), 37-42.
https://doi.org/10.5937/savteh2302036N

Nešić A, Kokunešoski M, Meseldžija S, Volkov-Husović T. Mesoporous silica-based sensor for colorimetric determination of Basic Yellow 28 dye in aqueous solutions. in Advanced Technologies. 2023;12(2):37-42.
doi:10.5937/savteh2302036N .

Nešić, Aleksandra, Kokunešoski, Maja, Meseldžija, Slađana, Volkov-Husović, Tatjana, "Mesoporous silica-based sensor for colorimetric determination of Basic Yellow 28 dye in aqueous solutions" in Advanced Technologies, 12, no. 2 (2023):37-42,
https://doi.org/10.5937/savteh2302036N . .

TY  - CONF
AU  - Egerić, Marija
AU  - Nešić, Aleksandra
AU  - Pilić, Branka
AU  - Wu, Yi-nan
AU  - Devečerski, Aleksandar
AU  - Vujasin, Radojka
AU  - Matović, Ljiljana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12251
AB  - Pollution of the environment is a serious issue nowadays, and finding a proper wastewater treatment is only small part of challenges that humans are facing. In order to find innovative ways for wastewater treatment, different techniques are applied, which lead to the production of new materials, such as ones made of polymeric nanofibers and materials with photocatalytic properties. In this study, nanofibers composite, synthetized from polyamide (PA) and UiO-66 Metal Organic Framework (MOF) by electrospinning method was used for degradation of Congo red dye from 10 ppm aqueous solution in batch conditions. Ultra-thin PA nanofiber membranes were produced with different ratios of MOF - 0.5 wt.%, 1 wt.%, 2 wt.% and 10 wt.% and prior the experiments, in order to be easily applied and removed from the solution, cut in the rectangular shape 1cm x 2 cm. FTIR, XRD and SEM are used for characterization of selected composites, prior and after sorption and photocatalytic experiments, while for determination of dye concentration UV-ViS spectrophotometer was used. The best performance in Congo red degradation was shown by membranes which contained 1 wt.% of MOF. FTIR spectra have shown that, upon the introduction of MOF particles into the PA fiber, reduction of all the peaks by the same amount in intensity indicates no interaction between MOF additive and PA matrix. Further, a new peak appeared after sorption at 590 cm-1 and disappeared after dye degradation induced by sun irradiation. XRD analysis has shown that there are no observable microstructural changes in composites upon sorption and cycling. Decreasing of the band gap of composite compared to pure MOF indicated increased photocatalytic activity. Reusability of composite membranes was investigated by performing experiments in multiple cycles, and results have shown that electrospun UiO-66/polyamide membranes have no significant changes in degradation efficiency of Congo red upon 4 cycles.
PB  - Leskovac : Faculty of Technology, University of Niš
C3  - 15th International symposium „Novel technologies and sustainable development" : Book of Abstracts
T1  - Mechanism of Congo Red Dye Photocatalytic Degradation on Metal Organic Framework/Polyamide Electrospun Nanofiber
SP  - 98
EP  - 98
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12251
ER  - 

@conference{
author = "Egerić, Marija and Nešić, Aleksandra and Pilić, Branka and Wu, Yi-nan and Devečerski, Aleksandar and Vujasin, Radojka and Matović, Ljiljana",
year = "2023",
abstract = "Pollution of the environment is a serious issue nowadays, and finding a proper wastewater treatment is only small part of challenges that humans are facing. In order to find innovative ways for wastewater treatment, different techniques are applied, which lead to the production of new materials, such as ones made of polymeric nanofibers and materials with photocatalytic properties. In this study, nanofibers composite, synthetized from polyamide (PA) and UiO-66 Metal Organic Framework (MOF) by electrospinning method was used for degradation of Congo red dye from 10 ppm aqueous solution in batch conditions. Ultra-thin PA nanofiber membranes were produced with different ratios of MOF - 0.5 wt.%, 1 wt.%, 2 wt.% and 10 wt.% and prior the experiments, in order to be easily applied and removed from the solution, cut in the rectangular shape 1cm x 2 cm. FTIR, XRD and SEM are used for characterization of selected composites, prior and after sorption and photocatalytic experiments, while for determination of dye concentration UV-ViS spectrophotometer was used. The best performance in Congo red degradation was shown by membranes which contained 1 wt.% of MOF. FTIR spectra have shown that, upon the introduction of MOF particles into the PA fiber, reduction of all the peaks by the same amount in intensity indicates no interaction between MOF additive and PA matrix. Further, a new peak appeared after sorption at 590 cm-1 and disappeared after dye degradation induced by sun irradiation. XRD analysis has shown that there are no observable microstructural changes in composites upon sorption and cycling. Decreasing of the band gap of composite compared to pure MOF indicated increased photocatalytic activity. Reusability of composite membranes was investigated by performing experiments in multiple cycles, and results have shown that electrospun UiO-66/polyamide membranes have no significant changes in degradation efficiency of Congo red upon 4 cycles.",
publisher = "Leskovac : Faculty of Technology, University of Niš",
journal = "15th International symposium „Novel technologies and sustainable development" : Book of Abstracts",
title = "Mechanism of Congo Red Dye Photocatalytic Degradation on Metal Organic Framework/Polyamide Electrospun Nanofiber",
pages = "98-98",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12251"
}

Egerić, M., Nešić, A., Pilić, B., Wu, Y., Devečerski, A., Vujasin, R.,& Matović, L.. (2023). Mechanism of Congo Red Dye Photocatalytic Degradation on Metal Organic Framework/Polyamide Electrospun Nanofiber. in 15th International symposium „Novel technologies and sustainable development" : Book of Abstracts
Leskovac : Faculty of Technology, University of Niš., 98-98.
https://hdl.handle.net/21.15107/rcub_vinar_12251

Egerić M, Nešić A, Pilić B, Wu Y, Devečerski A, Vujasin R, Matović L. Mechanism of Congo Red Dye Photocatalytic Degradation on Metal Organic Framework/Polyamide Electrospun Nanofiber. in 15th International symposium „Novel technologies and sustainable development" : Book of Abstracts. 2023;:98-98.
https://hdl.handle.net/21.15107/rcub_vinar_12251 .

Egerić, Marija, Nešić, Aleksandra, Pilić, Branka, Wu, Yi-nan, Devečerski, Aleksandar, Vujasin, Radojka, Matović, Ljiljana, "Mechanism of Congo Red Dye Photocatalytic Degradation on Metal Organic Framework/Polyamide Electrospun Nanofiber" in 15th International symposium „Novel technologies and sustainable development" : Book of Abstracts (2023):98-98,
https://hdl.handle.net/21.15107/rcub_vinar_12251 .