TY  - CONF
AU  - Knežević, Nataša
AU  - Jovanović, Aleksandar
AU  - Bugarčić, Mladen
AU  - Vuksanović, Marija
AU  - Milošević, Milena
AU  - Pešić, Ivan
AU  - Marinković, Aleksandar
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1202
AB  - Cotton-based membranes, due to their exceptional biocompatibility and sustainability,
have attracted considerable attention in various applications, especially in the field of bio and
green technologies. This study investigates the biodegradation potential of cotton membranes
modified with TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) radical and citric acid (CA),
with the aim of improving their properties and facilitating environmentally friendly disposal.
TEMPO radicals, in conjunction with the crosslinker citric acid, are incorporated into the
cellulose structure through a novel modification process. The citric acid component acted as a
plasticizer, increasing the amorphous parts of the cellulose and promoting enzymatic attack.
The TEMPO radical, with its nitroxyl group, contributed to the oxidation of cellulose, further
facilitating biodegradation.
The biodegradation aspect of these modified membranes was investigated in
controlled environmental conditions (Soil Burial test), simulating natural scenarios (humidity,
influence of enzymes, and bacteria). Biodegradation parameters such as weight loss,
structural changes, and degradation kinetics were examined during 90 days. Characterization
of the structure was performed using FTIR and SEM methods.
Our findings suggest that cellulosic membranes possess complete (100%)
biodegradability after 70 days compared to unmodified membranes. Obtained result shed
light on the potential of membranes modified in this way as sustainable and biodegradable
alternatives in various applications. The results emphasize their ecological nature and ability
to reduce environmental stress. Such cellulose-based materials promise a much greener future
in biotechnology, healthcare, and environmental protection.
PB  - Belgrade : University of Belgrade, Faculty of Technology and Metallurgy
C3  - International Conference BIOCHEMICAL ENGINEERING AND BIOTECHNOLOGY FOR YOUNG SCIENTISTS
T1  - Possibility of biodegradation of cotton membrane containing TEMPO radical and citric acid
ER  - 

@conference{
author = "Knežević, Nataša and Jovanović, Aleksandar and Bugarčić, Mladen and Vuksanović, Marija and Milošević, Milena and Pešić, Ivan and Marinković, Aleksandar",
year = "2023",
abstract = "Cotton-based membranes, due to their exceptional biocompatibility and sustainability,
have attracted considerable attention in various applications, especially in the field of bio and
green technologies. This study investigates the biodegradation potential of cotton membranes
modified with TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) radical and citric acid (CA),
with the aim of improving their properties and facilitating environmentally friendly disposal.
TEMPO radicals, in conjunction with the crosslinker citric acid, are incorporated into the
cellulose structure through a novel modification process. The citric acid component acted as a
plasticizer, increasing the amorphous parts of the cellulose and promoting enzymatic attack.
The TEMPO radical, with its nitroxyl group, contributed to the oxidation of cellulose, further
facilitating biodegradation.
The biodegradation aspect of these modified membranes was investigated in
controlled environmental conditions (Soil Burial test), simulating natural scenarios (humidity,
influence of enzymes, and bacteria). Biodegradation parameters such as weight loss,
structural changes, and degradation kinetics were examined during 90 days. Characterization
of the structure was performed using FTIR and SEM methods.
Our findings suggest that cellulosic membranes possess complete (100%)
biodegradability after 70 days compared to unmodified membranes. Obtained result shed
light on the potential of membranes modified in this way as sustainable and biodegradable
alternatives in various applications. The results emphasize their ecological nature and ability
to reduce environmental stress. Such cellulose-based materials promise a much greener future
in biotechnology, healthcare, and environmental protection.",
publisher = "Belgrade : University of Belgrade, Faculty of Technology and Metallurgy",
journal = "International Conference BIOCHEMICAL ENGINEERING AND BIOTECHNOLOGY FOR YOUNG SCIENTISTS",
title = "Possibility of biodegradation of cotton membrane containing TEMPO radical and citric acid"
}

Knežević, N., Jovanović, A., Bugarčić, M., Vuksanović, M., Milošević, M., Pešić, I.,& Marinković, A.. (2023). Possibility of biodegradation of cotton membrane containing TEMPO radical and citric acid. in International Conference BIOCHEMICAL ENGINEERING AND BIOTECHNOLOGY FOR YOUNG SCIENTISTS
Belgrade : University of Belgrade, Faculty of Technology and Metallurgy..

Knežević N, Jovanović A, Bugarčić M, Vuksanović M, Milošević M, Pešić I, Marinković A. Possibility of biodegradation of cotton membrane containing TEMPO radical and citric acid. in International Conference BIOCHEMICAL ENGINEERING AND BIOTECHNOLOGY FOR YOUNG SCIENTISTS. 2023;..

Knežević, Nataša, Jovanović, Aleksandar, Bugarčić, Mladen, Vuksanović, Marija, Milošević, Milena, Pešić, Ivan, Marinković, Aleksandar, "Possibility of biodegradation of cotton membrane containing TEMPO radical and citric acid" in International Conference BIOCHEMICAL ENGINEERING AND BIOTECHNOLOGY FOR YOUNG SCIENTISTS (2023).

TY  - CONF
AU  - Jovanović, Aleksandar
AU  - Bugarčić, Mladen
AU  - Knežević, Nataša
AU  - Bošnjaković, Jovana
AU  - Lukić, Jelena
AU  - Onjia, Antonije
AU  - Marinković, Aleksandar
PY  - 2022
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1001
AB  - Conventional wastewater treatment processes are increasingly difficult to fulfill strict standards of
achieving the required quality. Therefore, it is necessary to apply processes that in an efficient and
economically justified way reach the necessary limits in order to discharge wastewater into the
recipient. The process of photolysis represents the degradation of the starting pollutant practically to
water and carbon dioxide. The whole process takes place under the action of a UV lamp that imitated
solar irradiation. The process is environmentally justified since, unlike some other advanced
oxidation processes - AOPs, there is no use of additional, hazardous, chemicals which possibly results
in the precipitates formation that are leading to further treatment. In this paper, photolytic degradation
of pesticide thiophanate methyl was performed in doubled wall quartz reactor equipped with a
thermoregulation system. Reaction was forced under Osram ULTRA VITALUX UV lamp (300W).
Kinetics of photodecomposition process was followed by pseudo-first order. In certain time periods,
specimens were sampled, filtered and monitored by UV spectrophotometer Shimadzu 1800 with an
aim to determine the concentration of xenobiotic. Complete degradation of present xenobiotics was
obtained after 240 min. With an aim to enhance the degradation process, hydrogen peroxide was
added as a boosting agent which cause a shortening in demanded time (150 min) for complete
degradation. Verification of the success of decomposition was confirmed by the obtained values of
chemical oxygen demand (COD), which reveal that the established system has a basis for real
application in industrial or municipal wastewater.
PB  - Banja Luka : University in Banja Luka, Faculty of Technology
C3  - XIV CONFERENCE OF CHEMISTS, TECHNOLOGISTS AND ENVIRONMENTALISTS OF REPUBLIC OF SRPSKA
T1  - Removal of xenobiotics from wastewaters using photolysis under sun-light irradiation: experimental approach and process design
EP  - 210
SP  - 206
ER  - 

@conference{
author = "Jovanović, Aleksandar and Bugarčić, Mladen and Knežević, Nataša and Bošnjaković, Jovana and Lukić, Jelena and Onjia, Antonije and Marinković, Aleksandar",
year = "2022",
abstract = "Conventional wastewater treatment processes are increasingly difficult to fulfill strict standards of
achieving the required quality. Therefore, it is necessary to apply processes that in an efficient and
economically justified way reach the necessary limits in order to discharge wastewater into the
recipient. The process of photolysis represents the degradation of the starting pollutant practically to
water and carbon dioxide. The whole process takes place under the action of a UV lamp that imitated
solar irradiation. The process is environmentally justified since, unlike some other advanced
oxidation processes - AOPs, there is no use of additional, hazardous, chemicals which possibly results
in the precipitates formation that are leading to further treatment. In this paper, photolytic degradation
of pesticide thiophanate methyl was performed in doubled wall quartz reactor equipped with a
thermoregulation system. Reaction was forced under Osram ULTRA VITALUX UV lamp (300W).
Kinetics of photodecomposition process was followed by pseudo-first order. In certain time periods,
specimens were sampled, filtered and monitored by UV spectrophotometer Shimadzu 1800 with an
aim to determine the concentration of xenobiotic. Complete degradation of present xenobiotics was
obtained after 240 min. With an aim to enhance the degradation process, hydrogen peroxide was
added as a boosting agent which cause a shortening in demanded time (150 min) for complete
degradation. Verification of the success of decomposition was confirmed by the obtained values of
chemical oxygen demand (COD), which reveal that the established system has a basis for real
application in industrial or municipal wastewater.",
publisher = "Banja Luka : University in Banja Luka, Faculty of Technology",
journal = "XIV CONFERENCE OF CHEMISTS, TECHNOLOGISTS AND ENVIRONMENTALISTS OF REPUBLIC OF SRPSKA",
title = "Removal of xenobiotics from wastewaters using photolysis under sun-light irradiation: experimental approach and process design",
pages = "210-206"
}

Jovanović, A., Bugarčić, M., Knežević, N., Bošnjaković, J., Lukić, J., Onjia, A.,& Marinković, A.. (2022). Removal of xenobiotics from wastewaters using photolysis under sun-light irradiation: experimental approach and process design. in XIV CONFERENCE OF CHEMISTS, TECHNOLOGISTS AND ENVIRONMENTALISTS OF REPUBLIC OF SRPSKA
Banja Luka : University in Banja Luka, Faculty of Technology., 206-210.

Jovanović A, Bugarčić M, Knežević N, Bošnjaković J, Lukić J, Onjia A, Marinković A. Removal of xenobiotics from wastewaters using photolysis under sun-light irradiation: experimental approach and process design. in XIV CONFERENCE OF CHEMISTS, TECHNOLOGISTS AND ENVIRONMENTALISTS OF REPUBLIC OF SRPSKA. 2022;:206-210..

Jovanović, Aleksandar, Bugarčić, Mladen, Knežević, Nataša, Bošnjaković, Jovana, Lukić, Jelena, Onjia, Antonije, Marinković, Aleksandar, "Removal of xenobiotics from wastewaters using photolysis under sun-light irradiation: experimental approach and process design" in XIV CONFERENCE OF CHEMISTS, TECHNOLOGISTS AND ENVIRONMENTALISTS OF REPUBLIC OF SRPSKA (2022):206-210.