TY  - JOUR
AU  - Milovanović, Ivan
AU  - Zengin, Gokhan
AU  - Maksimović, Svetolik
AU  - Tadić, Vanja
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/17
AB  - Background This study provides an insight into the impact of ultrasound-assisted extraction with water as solvent (UAEW) and extraction by supercritical carbon dioxide (SC-CO2) with 5% EtOH on antioxidant and enzyme inhibitory activity in regard to the chemical profile of the edible and medicinal mushroom,Pleurotus pulmonarius. Results Extraction efficiency was between 0.36% and 63.32%, depending on the extraction technique. The main compounds in the extracts were fatty acids. Supercritical CO(2)extraction with co-solvent was the most suitable method for obtaining extracts that were rich in ergosterol content, reaching a value of 40.1 mg g(-1). The UAEW of crude mushroom powder ensured the highest yield, as well as the extracts with best antioxidative activity. The measurements of enzyme inhibitory activity revealed that all types of investigated extracts exhibited only tyrosinase and amylase inhibition at a significant level. Conclusion Based on our results, the extraction methods significantly affected the chemical profile and bioactivity ofP. pulmonarius.
PB  - Wiley, Hoboken
T2  - Journal of the Science of Food and Agriculture
T1  - Supercritical and ultrasound-assisted extracts fromPleurotus pulmonariusmushroom: chemical profiles, antioxidative, and enzyme-inhibitory properties
EP  - 2293
IS  - 6
SP  - 2284
VL  - 101
DO  - 10.1002/jsfa.10849
ER  - 

@article{
author = "Milovanović, Ivan and Zengin, Gokhan and Maksimović, Svetolik and Tadić, Vanja",
year = "2021",
abstract = "Background This study provides an insight into the impact of ultrasound-assisted extraction with water as solvent (UAEW) and extraction by supercritical carbon dioxide (SC-CO2) with 5% EtOH on antioxidant and enzyme inhibitory activity in regard to the chemical profile of the edible and medicinal mushroom,Pleurotus pulmonarius. Results Extraction efficiency was between 0.36% and 63.32%, depending on the extraction technique. The main compounds in the extracts were fatty acids. Supercritical CO(2)extraction with co-solvent was the most suitable method for obtaining extracts that were rich in ergosterol content, reaching a value of 40.1 mg g(-1). The UAEW of crude mushroom powder ensured the highest yield, as well as the extracts with best antioxidative activity. The measurements of enzyme inhibitory activity revealed that all types of investigated extracts exhibited only tyrosinase and amylase inhibition at a significant level. Conclusion Based on our results, the extraction methods significantly affected the chemical profile and bioactivity ofP. pulmonarius.",
publisher = "Wiley, Hoboken",
journal = "Journal of the Science of Food and Agriculture",
title = "Supercritical and ultrasound-assisted extracts fromPleurotus pulmonariusmushroom: chemical profiles, antioxidative, and enzyme-inhibitory properties",
pages = "2293-2284",
number = "6",
volume = "101",
doi = "10.1002/jsfa.10849"
}

Milovanović, I., Zengin, G., Maksimović, S.,& Tadić, V.. (2021). Supercritical and ultrasound-assisted extracts fromPleurotus pulmonariusmushroom: chemical profiles, antioxidative, and enzyme-inhibitory properties. in Journal of the Science of Food and Agriculture
Wiley, Hoboken., 101(6), 2284-2293.
https://doi.org/10.1002/jsfa.10849

Milovanović I, Zengin G, Maksimović S, Tadić V. Supercritical and ultrasound-assisted extracts fromPleurotus pulmonariusmushroom: chemical profiles, antioxidative, and enzyme-inhibitory properties. in Journal of the Science of Food and Agriculture. 2021;101(6):2284-2293.
doi:10.1002/jsfa.10849 .

Milovanović, Ivan, Zengin, Gokhan, Maksimović, Svetolik, Tadić, Vanja, "Supercritical and ultrasound-assisted extracts fromPleurotus pulmonariusmushroom: chemical profiles, antioxidative, and enzyme-inhibitory properties" in Journal of the Science of Food and Agriculture, 101, no. 6 (2021):2284-2293,
https://doi.org/10.1002/jsfa.10849 . .

TY  - JOUR
AU  - Pavlović, Stefan
AU  - Marinković, Dalibor
AU  - Kostić, Milan
AU  - Lončarević, Davor
AU  - Mojović, Ljiljana
AU  - Stanković, Miroslav
AU  - Veljković, Vlada B.
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4586
AB  - Lignite coal fly ash (FA) from a domestic thermal power plant was converted into a pure cancrinite zeolitic material (ZMFA) using a novel, custom-made, rotating autoclave reactor system by a short-term alkali activation process. The obtained ZMFA was used as catalyst support of calcium oxide as an active component derived from waste chicken eggshells (ES). The ZMFA supported calcium oxide catalyst (xCaO/ZMFA) was synthesized by means of the ultrasound-assisted method. The influence of different concentrations of dispersed calcium oxide (x = 5–20 wt%) over ZMFA and thermal treatment at different temperatures (450–600 °C) were studied. The structural and morphological characterization showed that the original cancrinite structure was preserved. The basicity and textural properties indicated the presence of strong active sites in a well-defined pore network suitable for the reactions of bulky organic compounds such as triacylglycerols (TAGs). The highest activity (96.5% of fatty acid methyl esters) in the methanolysis of sunflower oil was achieved with the 20CaO/ZMFA catalyst under reaction conditions: temperature of 60 °C, methanol/oil molar ratio of 12:1, catalyst concentration of 4 wt%, and reaction time of 2 h. It was found that the optimal calcination temperature of the catalyst precursor was 550 °C. At calcination temperatures above 550 °C, the melting of the glassy phase became more intense whereby the molten phase partially reacted with calcium oxide forming the catalytically inactive calcium silicate compounds (wollastonite, larnite, etc.). The rate constants of the two tested kinetic models were correlated with the concentrations of active calcium oxide. The MRPD of both models was low indicating their reliability.
PB  - Elsevier
T2  - Fuel
T1  - The chicken eggshell calcium oxide ultrasonically dispersed over lignite coal fly ash-based cancrinite zeolite support as a catalyst for biodiesel production
SP  - 119912
VL  - 289
DO  - 10.1016/j.fuel.2020.119912
ER  - 

@article{
author = "Pavlović, Stefan and Marinković, Dalibor and Kostić, Milan and Lončarević, Davor and Mojović, Ljiljana and Stanković, Miroslav and Veljković, Vlada B.",
year = "2021",
abstract = "Lignite coal fly ash (FA) from a domestic thermal power plant was converted into a pure cancrinite zeolitic material (ZMFA) using a novel, custom-made, rotating autoclave reactor system by a short-term alkali activation process. The obtained ZMFA was used as catalyst support of calcium oxide as an active component derived from waste chicken eggshells (ES). The ZMFA supported calcium oxide catalyst (xCaO/ZMFA) was synthesized by means of the ultrasound-assisted method. The influence of different concentrations of dispersed calcium oxide (x = 5–20 wt%) over ZMFA and thermal treatment at different temperatures (450–600 °C) were studied. The structural and morphological characterization showed that the original cancrinite structure was preserved. The basicity and textural properties indicated the presence of strong active sites in a well-defined pore network suitable for the reactions of bulky organic compounds such as triacylglycerols (TAGs). The highest activity (96.5% of fatty acid methyl esters) in the methanolysis of sunflower oil was achieved with the 20CaO/ZMFA catalyst under reaction conditions: temperature of 60 °C, methanol/oil molar ratio of 12:1, catalyst concentration of 4 wt%, and reaction time of 2 h. It was found that the optimal calcination temperature of the catalyst precursor was 550 °C. At calcination temperatures above 550 °C, the melting of the glassy phase became more intense whereby the molten phase partially reacted with calcium oxide forming the catalytically inactive calcium silicate compounds (wollastonite, larnite, etc.). The rate constants of the two tested kinetic models were correlated with the concentrations of active calcium oxide. The MRPD of both models was low indicating their reliability.",
publisher = "Elsevier",
journal = "Fuel",
title = "The chicken eggshell calcium oxide ultrasonically dispersed over lignite coal fly ash-based cancrinite zeolite support as a catalyst for biodiesel production",
pages = "119912",
volume = "289",
doi = "10.1016/j.fuel.2020.119912"
}

Pavlović, S., Marinković, D., Kostić, M., Lončarević, D., Mojović, L., Stanković, M.,& Veljković, V. B.. (2021). The chicken eggshell calcium oxide ultrasonically dispersed over lignite coal fly ash-based cancrinite zeolite support as a catalyst for biodiesel production. in Fuel
Elsevier., 289, 119912.
https://doi.org/10.1016/j.fuel.2020.119912

Pavlović S, Marinković D, Kostić M, Lončarević D, Mojović L, Stanković M, Veljković VB. The chicken eggshell calcium oxide ultrasonically dispersed over lignite coal fly ash-based cancrinite zeolite support as a catalyst for biodiesel production. in Fuel. 2021;289:119912.
doi:10.1016/j.fuel.2020.119912 .

Pavlović, Stefan, Marinković, Dalibor, Kostić, Milan, Lončarević, Davor, Mojović, Ljiljana, Stanković, Miroslav, Veljković, Vlada B., "The chicken eggshell calcium oxide ultrasonically dispersed over lignite coal fly ash-based cancrinite zeolite support as a catalyst for biodiesel production" in Fuel, 289 (2021):119912,
https://doi.org/10.1016/j.fuel.2020.119912 . .

TY  - JOUR
AU  - Pavlovic, Stefan M.
AU  - Marinkovic, Dalibor M.
AU  - Kostic, Milan D.
AU  - Loncarevic, Davor R.
AU  - Mojović, Ljiljana
AU  - Stankovic, Miroslav, V
AU  - Veljkovic, Vlada B.
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4971
AB  - Lignite coal fly ash (FA) from a domestic thermal power plant was converted into a pure cancrinite zeolitic material (ZM(FA)) using a novel, custom-made, rotating autoclave reactor system by a short-term alkali activation process. The obtained ZM(FA) was used as catalyst support of calcium oxide as an active component derived from waste chicken eggshells (ES). The ZM(FA) supported calcium oxide catalyst (xCaO/ZM(FA)) was synthesized by means of the ultrasound-assisted method. The influence of different concentrations of dispersed calcium oxide (x = 5-20 wt%) over ZM(FA) and thermal treatment at different temperatures (450-600 degrees C) were studied. The structural and morphological characterization showed that the original cancrinite structure was preserved. The basicity and textural properties indicated the presence of strong active sites in a well-defined pore network suitable for the reactions of bulky organic compounds such as triacylglycerols (TAGs). The highest activity (96.5% of fatty acid methyl esters) in the methanolysis of sunflower oil was achieved with the 20CaO/ZM(FA) catalyst under reaction conditions: temperature of 60 degrees C, methanol/oil molar ratio of 12:1, catalyst concentration of 4 wt%, and reaction time of 2 h. It was found that the optimal calcination temperature of the catalyst precursor was 550 degrees C. At calcination temperatures above 550 degrees C, the melting of the glassy phase became more intense whereby the molten phase partially reacted with calcium oxide forming the catalytically inactive calcium silicate compounds (wollastonite, larnite, etc.). The rate constants of the two tested kinetic models were correlated with the concentrations of active calcium oxide. The MRPD of both models was low indicating their reliability.
T2  - Fuel
T1  - The chicken eggshell calcium oxide ultrasonically dispersed over lignite coal fly ash-based cancrinite zeolite support as a catalyst for biodiesel production
VL  - 289
DO  - 10.1016/j.fuel.2020.119912
ER  - 

@article{
author = "Pavlovic, Stefan M. and Marinkovic, Dalibor M. and Kostic, Milan D. and Loncarevic, Davor R. and Mojović, Ljiljana and Stankovic, Miroslav, V and Veljkovic, Vlada B.",
year = "2021",
abstract = "Lignite coal fly ash (FA) from a domestic thermal power plant was converted into a pure cancrinite zeolitic material (ZM(FA)) using a novel, custom-made, rotating autoclave reactor system by a short-term alkali activation process. The obtained ZM(FA) was used as catalyst support of calcium oxide as an active component derived from waste chicken eggshells (ES). The ZM(FA) supported calcium oxide catalyst (xCaO/ZM(FA)) was synthesized by means of the ultrasound-assisted method. The influence of different concentrations of dispersed calcium oxide (x = 5-20 wt%) over ZM(FA) and thermal treatment at different temperatures (450-600 degrees C) were studied. The structural and morphological characterization showed that the original cancrinite structure was preserved. The basicity and textural properties indicated the presence of strong active sites in a well-defined pore network suitable for the reactions of bulky organic compounds such as triacylglycerols (TAGs). The highest activity (96.5% of fatty acid methyl esters) in the methanolysis of sunflower oil was achieved with the 20CaO/ZM(FA) catalyst under reaction conditions: temperature of 60 degrees C, methanol/oil molar ratio of 12:1, catalyst concentration of 4 wt%, and reaction time of 2 h. It was found that the optimal calcination temperature of the catalyst precursor was 550 degrees C. At calcination temperatures above 550 degrees C, the melting of the glassy phase became more intense whereby the molten phase partially reacted with calcium oxide forming the catalytically inactive calcium silicate compounds (wollastonite, larnite, etc.). The rate constants of the two tested kinetic models were correlated with the concentrations of active calcium oxide. The MRPD of both models was low indicating their reliability.",
journal = "Fuel",
title = "The chicken eggshell calcium oxide ultrasonically dispersed over lignite coal fly ash-based cancrinite zeolite support as a catalyst for biodiesel production",
volume = "289",
doi = "10.1016/j.fuel.2020.119912"
}

Pavlovic, S. M., Marinkovic, D. M., Kostic, M. D., Loncarevic, D. R., Mojović, L., Stankovic, M. V.,& Veljkovic, V. B.. (2021). The chicken eggshell calcium oxide ultrasonically dispersed over lignite coal fly ash-based cancrinite zeolite support as a catalyst for biodiesel production. in Fuel, 289.
https://doi.org/10.1016/j.fuel.2020.119912

Pavlovic SM, Marinkovic DM, Kostic MD, Loncarevic DR, Mojović L, Stankovic MV, Veljkovic VB. The chicken eggshell calcium oxide ultrasonically dispersed over lignite coal fly ash-based cancrinite zeolite support as a catalyst for biodiesel production. in Fuel. 2021;289.
doi:10.1016/j.fuel.2020.119912 .

Pavlovic, Stefan M., Marinkovic, Dalibor M., Kostic, Milan D., Loncarevic, Davor R., Mojović, Ljiljana, Stankovic, Miroslav, V, Veljkovic, Vlada B., "The chicken eggshell calcium oxide ultrasonically dispersed over lignite coal fly ash-based cancrinite zeolite support as a catalyst for biodiesel production" in Fuel, 289 (2021),
https://doi.org/10.1016/j.fuel.2020.119912 . .

TY  - JOUR
AU  - Đorđević, Biljana S.
AU  - Troter, Dragan Z.
AU  - Veljković, Vlada B.
AU  - Kijevčanin, Mirjana
AU  - Radović, Ivona
AU  - Todorović, Zoran B.
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4427
AB  - Different deep eutectic solvents (DESs) of triethanolamine (TEOA) and oxalic acid (OA), glacial acetic acid (AA), L-(+)-lactic acid (LA), oleic acid (OLA), glycerol (G), ethylene glycol (EG), propylene glycol (PEG), choline chloride (ChCl) or 1,3-dimethylurea (DMU) were prepared and characterized regarding their physicochemical (density, viscosity, electrical conductivity, refractive index, coefficient of volume expansion, molecular volume, lattice energy and heat capacity) properties over the temperature range of 293.15-363.15 K at 101.325 kPa. For all tested DESs, the density, viscosity and refractive index decreased with rising temperature, while the electrical conductivity increased. The temperature dependence of viscosity and electrical conductivity are described by the Vogel-Tamman-Fulcher equations. The viscosity and molar conductivity, which exhibited a linear behaviour, were correlated by the fractional Walden rule. Besides, the Fourier transform infrared spectroscopy (FTIR) was used to study the functional groups of these DESs while thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) provided the information about their stability. The tested DESs of TEOA possess desirable properties for use in various industrial processes, such as extractions, separations, chemical technology and biotechnology.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - The physicochemical properties of the deep eutectic solvents with triethanolamine as a major component
EP  - 1315
IS  - 10
SP  - 1303
VL  - 85
DO  - 10.2298/JSC200425050D
ER  - 

@article{
author = "Đorđević, Biljana S. and Troter, Dragan Z. and Veljković, Vlada B. and Kijevčanin, Mirjana and Radović, Ivona and Todorović, Zoran B.",
year = "2020",
abstract = "Different deep eutectic solvents (DESs) of triethanolamine (TEOA) and oxalic acid (OA), glacial acetic acid (AA), L-(+)-lactic acid (LA), oleic acid (OLA), glycerol (G), ethylene glycol (EG), propylene glycol (PEG), choline chloride (ChCl) or 1,3-dimethylurea (DMU) were prepared and characterized regarding their physicochemical (density, viscosity, electrical conductivity, refractive index, coefficient of volume expansion, molecular volume, lattice energy and heat capacity) properties over the temperature range of 293.15-363.15 K at 101.325 kPa. For all tested DESs, the density, viscosity and refractive index decreased with rising temperature, while the electrical conductivity increased. The temperature dependence of viscosity and electrical conductivity are described by the Vogel-Tamman-Fulcher equations. The viscosity and molar conductivity, which exhibited a linear behaviour, were correlated by the fractional Walden rule. Besides, the Fourier transform infrared spectroscopy (FTIR) was used to study the functional groups of these DESs while thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) provided the information about their stability. The tested DESs of TEOA possess desirable properties for use in various industrial processes, such as extractions, separations, chemical technology and biotechnology.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "The physicochemical properties of the deep eutectic solvents with triethanolamine as a major component",
pages = "1315-1303",
number = "10",
volume = "85",
doi = "10.2298/JSC200425050D"
}

Đorđević, B. S., Troter, D. Z., Veljković, V. B., Kijevčanin, M., Radović, I.,& Todorović, Z. B.. (2020). The physicochemical properties of the deep eutectic solvents with triethanolamine as a major component. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 85(10), 1303-1315.
https://doi.org/10.2298/JSC200425050D

Đorđević BS, Troter DZ, Veljković VB, Kijevčanin M, Radović I, Todorović ZB. The physicochemical properties of the deep eutectic solvents with triethanolamine as a major component. in Journal of the Serbian Chemical Society. 2020;85(10):1303-1315.
doi:10.2298/JSC200425050D .

Đorđević, Biljana S., Troter, Dragan Z., Veljković, Vlada B., Kijevčanin, Mirjana, Radović, Ivona, Todorović, Zoran B., "The physicochemical properties of the deep eutectic solvents with triethanolamine as a major component" in Journal of the Serbian Chemical Society, 85, no. 10 (2020):1303-1315,
https://doi.org/10.2298/JSC200425050D . .

TY  - JOUR
AU  - Meseldžija, Slađana
AU  - Petrović, Jelena
AU  - Onjia, Antonije
AU  - Volkov-Husović, Tatjana
AU  - Nešić, Aleksandra
AU  - Vukelić, Nikola
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4440
AB  - This study is aimed to evaluate the possibility of lemon peel, as an agro-industrial waste, to remove Fe2+, Zn2+ and Mn2+ from single aqueous solutions and mining wastewater. For this purpose, the influence of various parameters: sorption time, initial pH solution, initial metal ion concentration and a dose of sorbent on the sorption process were studied in batch experiments. The experimental equilibrium data have been analysed utilizing linearized forms of Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherms. The Langmuir isotherm provided the best theoretical correlation of the experimental equilibrium data for Fe2+, Zn2+ and Mn2+, with the maximum sorption capacities of 4.40, 5.03 and 4.52 mg g(-1), respectively. The percentage of targeted ions removal from single aqueous solutions was 92.9 % (Zn2+), 84.5 % (Fe2+) and 78.2 % (Mn2+). Regarding the sorption capability of lemon peel in mining wastewater, the maximum removal of Fe2+, Zn2+ and Mn2+ from mining wastewater was 49.62, 33.97 and 9.11 %, respectively. In addition, the potential reusability of the lemon peel as sorbent was investigated through desorption study in 0.1M of CH3COO4, HCl and HNO3 solution. The highest rate of desorption was achieved in 0.1 M HCl solution, reached a value of 55.19 % for Mn2+ and 37.24 % for Zn2+, while for Fe2+ the highest value of 25.82 % was achieved in 0.1M HNO3 solution.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Removal of Fe2+, Zn2+ and Mn2+ from the mining wastewater by lemon peel waste
EP  - 1382
IS  - 10
SP  - 1371
VL  - 85
DO  - 10.2298/JSC200413030M
ER  - 

@article{
author = "Meseldžija, Slađana and Petrović, Jelena and Onjia, Antonije and Volkov-Husović, Tatjana and Nešić, Aleksandra and Vukelić, Nikola",
year = "2020",
abstract = "This study is aimed to evaluate the possibility of lemon peel, as an agro-industrial waste, to remove Fe2+, Zn2+ and Mn2+ from single aqueous solutions and mining wastewater. For this purpose, the influence of various parameters: sorption time, initial pH solution, initial metal ion concentration and a dose of sorbent on the sorption process were studied in batch experiments. The experimental equilibrium data have been analysed utilizing linearized forms of Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherms. The Langmuir isotherm provided the best theoretical correlation of the experimental equilibrium data for Fe2+, Zn2+ and Mn2+, with the maximum sorption capacities of 4.40, 5.03 and 4.52 mg g(-1), respectively. The percentage of targeted ions removal from single aqueous solutions was 92.9 % (Zn2+), 84.5 % (Fe2+) and 78.2 % (Mn2+). Regarding the sorption capability of lemon peel in mining wastewater, the maximum removal of Fe2+, Zn2+ and Mn2+ from mining wastewater was 49.62, 33.97 and 9.11 %, respectively. In addition, the potential reusability of the lemon peel as sorbent was investigated through desorption study in 0.1M of CH3COO4, HCl and HNO3 solution. The highest rate of desorption was achieved in 0.1 M HCl solution, reached a value of 55.19 % for Mn2+ and 37.24 % for Zn2+, while for Fe2+ the highest value of 25.82 % was achieved in 0.1M HNO3 solution.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Removal of Fe2+, Zn2+ and Mn2+ from the mining wastewater by lemon peel waste",
pages = "1382-1371",
number = "10",
volume = "85",
doi = "10.2298/JSC200413030M"
}

Meseldžija, S., Petrović, J., Onjia, A., Volkov-Husović, T., Nešić, A.,& Vukelić, N.. (2020). Removal of Fe2+, Zn2+ and Mn2+ from the mining wastewater by lemon peel waste. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 85(10), 1371-1382.
https://doi.org/10.2298/JSC200413030M

Meseldžija S, Petrović J, Onjia A, Volkov-Husović T, Nešić A, Vukelić N. Removal of Fe2+, Zn2+ and Mn2+ from the mining wastewater by lemon peel waste. in Journal of the Serbian Chemical Society. 2020;85(10):1371-1382.
doi:10.2298/JSC200413030M .

Meseldžija, Slađana, Petrović, Jelena, Onjia, Antonije, Volkov-Husović, Tatjana, Nešić, Aleksandra, Vukelić, Nikola, "Removal of Fe2+, Zn2+ and Mn2+ from the mining wastewater by lemon peel waste" in Journal of the Serbian Chemical Society, 85, no. 10 (2020):1371-1382,
https://doi.org/10.2298/JSC200413030M . .

TY  - JOUR
AU  - Lukić, Ivana
AU  - Vulić, Jelena
AU  - Ivanović, Jasna
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4561
AB  - Present study was aimed to produce biodegradable films with antioxidant activity for active food packaging. Films of poly(lactic acid) (PLA) with 5 wt% of poly(ε-caprolactone) (PCL), denoted as PLA-5, were loaded with thymol, carvacrol and their mixture using supercritical CO2 at 40 °C and 10 MPa for 5 h, with 27.53, 21.18, and 21.49 % of loading achieved, respectively. Morphological, structural and mechanical properties of the obtained PLA-5 films were analyzed. The highest total polyphenol content and the best antioxidant activity as well as good storage stability, acceptable physical properties and the lowest release rate (44.51 mg/L released after 6 weeks) were observed for PLA-5 film loaded with thymol and carvacrol mixture. Mixture of thymol and carvacrol loaded into PLA-5 film showed synergy and low percentage of migration into distilled water, revealing great potential for application as a food packaging material with aim to decrease requirements for amount of the active ingredients.
T2  - Food Packaging and Shelf Life
T1  - Antioxidant activity of PLA/PCL films loaded with thymol and/or carvacrol using scCO2 for active food packaging
VL  - 26
DO  - 10.1016/j.fpsl.2020.100578
ER  - 

@article{
author = "Lukić, Ivana and Vulić, Jelena and Ivanović, Jasna",
year = "2020",
abstract = "Present study was aimed to produce biodegradable films with antioxidant activity for active food packaging. Films of poly(lactic acid) (PLA) with 5 wt% of poly(ε-caprolactone) (PCL), denoted as PLA-5, were loaded with thymol, carvacrol and their mixture using supercritical CO2 at 40 °C and 10 MPa for 5 h, with 27.53, 21.18, and 21.49 % of loading achieved, respectively. Morphological, structural and mechanical properties of the obtained PLA-5 films were analyzed. The highest total polyphenol content and the best antioxidant activity as well as good storage stability, acceptable physical properties and the lowest release rate (44.51 mg/L released after 6 weeks) were observed for PLA-5 film loaded with thymol and carvacrol mixture. Mixture of thymol and carvacrol loaded into PLA-5 film showed synergy and low percentage of migration into distilled water, revealing great potential for application as a food packaging material with aim to decrease requirements for amount of the active ingredients.",
journal = "Food Packaging and Shelf Life",
title = "Antioxidant activity of PLA/PCL films loaded with thymol and/or carvacrol using scCO2 for active food packaging",
volume = "26",
doi = "10.1016/j.fpsl.2020.100578"
}

Lukić, I., Vulić, J.,& Ivanović, J.. (2020). Antioxidant activity of PLA/PCL films loaded with thymol and/or carvacrol using scCO2 for active food packaging. in Food Packaging and Shelf Life, 26.
https://doi.org/10.1016/j.fpsl.2020.100578

Lukić I, Vulić J, Ivanović J. Antioxidant activity of PLA/PCL films loaded with thymol and/or carvacrol using scCO2 for active food packaging. in Food Packaging and Shelf Life. 2020;26.
doi:10.1016/j.fpsl.2020.100578 .

Lukić, Ivana, Vulić, Jelena, Ivanović, Jasna, "Antioxidant activity of PLA/PCL films loaded with thymol and/or carvacrol using scCO2 for active food packaging" in Food Packaging and Shelf Life, 26 (2020),
https://doi.org/10.1016/j.fpsl.2020.100578 . .

TY  - JOUR
AU  - Lukić, Ivana
AU  - Vulic, Jelena
AU  - Ivanovic, Jasna
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4736
AB  - Present study was aimed to produce biodegradable films with antioxidant activity for active food packaging. Films of poly(lactic acid) (PLA) with 5 wt% of poly(epsilon-caprolactone) (PCL), denoted as PLA-5, were loaded with thymol, carvacrol and their mixture using supercritical CO2 at 40 degrees C and 10 MPa for 5 h, with 27.53, 21.18, and 21.49 % of loading achieved, respectively. Morphological, structural and mechanical properties of the obtained PLA-5 films were analyzed. The highest total polyphenol content and the best antioxidant activity as well as good storage stability, acceptable physical properties and the lowest release rate (44.51 mg/L released after 6 weeks) were observed for PLA-5 film loaded with thymol and carvacrol mixture. Mixture of thymol and carvacrol loaded into PLA-5 film showed synergy and low percentage of migration into distilled water, revealing great potential for application as a food packaging material with aim to decrease requirements for amount of the active ingredients.
T2  - Food Packaging and Shelf Life
T1  - Antioxidant activity of PLA/PCL films loaded with thymol and/or carvacrol using scCO(2) for active food packaging
VL  - 26
DO  - 10.1016/j.fpsl.2020.100578
ER  - 

@article{
author = "Lukić, Ivana and Vulic, Jelena and Ivanovic, Jasna",
year = "2020",
abstract = "Present study was aimed to produce biodegradable films with antioxidant activity for active food packaging. Films of poly(lactic acid) (PLA) with 5 wt% of poly(epsilon-caprolactone) (PCL), denoted as PLA-5, were loaded with thymol, carvacrol and their mixture using supercritical CO2 at 40 degrees C and 10 MPa for 5 h, with 27.53, 21.18, and 21.49 % of loading achieved, respectively. Morphological, structural and mechanical properties of the obtained PLA-5 films were analyzed. The highest total polyphenol content and the best antioxidant activity as well as good storage stability, acceptable physical properties and the lowest release rate (44.51 mg/L released after 6 weeks) were observed for PLA-5 film loaded with thymol and carvacrol mixture. Mixture of thymol and carvacrol loaded into PLA-5 film showed synergy and low percentage of migration into distilled water, revealing great potential for application as a food packaging material with aim to decrease requirements for amount of the active ingredients.",
journal = "Food Packaging and Shelf Life",
title = "Antioxidant activity of PLA/PCL films loaded with thymol and/or carvacrol using scCO(2) for active food packaging",
volume = "26",
doi = "10.1016/j.fpsl.2020.100578"
}

Lukić, I., Vulic, J.,& Ivanovic, J.. (2020). Antioxidant activity of PLA/PCL films loaded with thymol and/or carvacrol using scCO(2) for active food packaging. in Food Packaging and Shelf Life, 26.
https://doi.org/10.1016/j.fpsl.2020.100578

Lukić I, Vulic J, Ivanovic J. Antioxidant activity of PLA/PCL films loaded with thymol and/or carvacrol using scCO(2) for active food packaging. in Food Packaging and Shelf Life. 2020;26.
doi:10.1016/j.fpsl.2020.100578 .

Lukić, Ivana, Vulic, Jelena, Ivanovic, Jasna, "Antioxidant activity of PLA/PCL films loaded with thymol and/or carvacrol using scCO(2) for active food packaging" in Food Packaging and Shelf Life, 26 (2020),
https://doi.org/10.1016/j.fpsl.2020.100578 . .

TY  - JOUR
AU  - Pavlović, Stefan M.
AU  - Marinković, Dalibor
AU  - Kostić, Milan D.
AU  - Janković-Častvan, Ivona
AU  - Mojović, Ljiljana
AU  - Stanković, Miroslav
AU  - Veljković, Vlada B.
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4481
AB  - The present paper is focused on the development of a new environment-friendly methanolysis catalyst completely based on waste materials: lignite coal fly ash and chicken eggshells. A novel catalyst based on CaO supported on a fly ash-based zeolitic material (CaO/FA-ZM) was obtained from a cancrinite-sodalite group zeolite-like material (vishnevite type) and active CaO by alkali activation in a new miniature autoclave reactor system and hydration-dehydration. Agitation by rotation of the entire reaction mixture led to a more homogeneous zeolitic product and saved both time and energy. The obtained catalyst structure corresponds to gis-mondine and the crystallographic modification of calcium silicate (alpha'-dicalcium silicate) with deposited CaO. The characteristics of the synthesized catalyst were determined using ED-XRF, XRD, FT-IR, SEM, Hg-porosimetry, N-2-physisorption, LDPSA, and Hammett indicators. The CaO/FA-ZM catalyst exhibited a high activity (97.8% of FAME for only 30 min) and stability (a negligible drop in activity in five consecutive cycles) in the methanolysis reaction under the optimal reaction conditions (temperature of 60 degrees C, methanol/oil molar ratio of 6:1, and catalyst concentration of 6 wt%). A kinetic study was performed using two different mechanisms: the irreversible pseudo-first-order reaction mechanism in two regimes (heterogeneous and homogeneous) and the changing mechanism combined with the triacylglycerol mass transfer limitation. Both models showed a satisfactory agreement between the experimental and predicted values of conversion degree (R-2  gt  0.93), confirming their validity for the CaO-based heterogeneously catalyzed methanolysis. The values of the activation energy calculated for both mechanisms were 67.17 and 58.03 kJ mol(-1), respectively.
PB  - Elsevier Sci Ltd, Oxford
T2  - Fuel
T1  - A CaO/zeolite-based catalyst obtained from waste chicken eggshell and coal fly ash for biodiesel production
VL  - 267
DO  - 10.1016/j.fuel.2020.117171
ER  - 

@article{
author = "Pavlović, Stefan M. and Marinković, Dalibor and Kostić, Milan D. and Janković-Častvan, Ivona and Mojović, Ljiljana and Stanković, Miroslav and Veljković, Vlada B.",
year = "2020",
abstract = "The present paper is focused on the development of a new environment-friendly methanolysis catalyst completely based on waste materials: lignite coal fly ash and chicken eggshells. A novel catalyst based on CaO supported on a fly ash-based zeolitic material (CaO/FA-ZM) was obtained from a cancrinite-sodalite group zeolite-like material (vishnevite type) and active CaO by alkali activation in a new miniature autoclave reactor system and hydration-dehydration. Agitation by rotation of the entire reaction mixture led to a more homogeneous zeolitic product and saved both time and energy. The obtained catalyst structure corresponds to gis-mondine and the crystallographic modification of calcium silicate (alpha'-dicalcium silicate) with deposited CaO. The characteristics of the synthesized catalyst were determined using ED-XRF, XRD, FT-IR, SEM, Hg-porosimetry, N-2-physisorption, LDPSA, and Hammett indicators. The CaO/FA-ZM catalyst exhibited a high activity (97.8% of FAME for only 30 min) and stability (a negligible drop in activity in five consecutive cycles) in the methanolysis reaction under the optimal reaction conditions (temperature of 60 degrees C, methanol/oil molar ratio of 6:1, and catalyst concentration of 6 wt%). A kinetic study was performed using two different mechanisms: the irreversible pseudo-first-order reaction mechanism in two regimes (heterogeneous and homogeneous) and the changing mechanism combined with the triacylglycerol mass transfer limitation. Both models showed a satisfactory agreement between the experimental and predicted values of conversion degree (R-2  gt  0.93), confirming their validity for the CaO-based heterogeneously catalyzed methanolysis. The values of the activation energy calculated for both mechanisms were 67.17 and 58.03 kJ mol(-1), respectively.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Fuel",
title = "A CaO/zeolite-based catalyst obtained from waste chicken eggshell and coal fly ash for biodiesel production",
volume = "267",
doi = "10.1016/j.fuel.2020.117171"
}

Pavlović, S. M., Marinković, D., Kostić, M. D., Janković-Častvan, I., Mojović, L., Stanković, M.,& Veljković, V. B.. (2020). A CaO/zeolite-based catalyst obtained from waste chicken eggshell and coal fly ash for biodiesel production. in Fuel
Elsevier Sci Ltd, Oxford., 267.
https://doi.org/10.1016/j.fuel.2020.117171

Pavlović SM, Marinković D, Kostić MD, Janković-Častvan I, Mojović L, Stanković M, Veljković VB. A CaO/zeolite-based catalyst obtained from waste chicken eggshell and coal fly ash for biodiesel production. in Fuel. 2020;267.
doi:10.1016/j.fuel.2020.117171 .

Pavlović, Stefan M., Marinković, Dalibor, Kostić, Milan D., Janković-Častvan, Ivona, Mojović, Ljiljana, Stanković, Miroslav, Veljković, Vlada B., "A CaO/zeolite-based catalyst obtained from waste chicken eggshell and coal fly ash for biodiesel production" in Fuel, 267 (2020),
https://doi.org/10.1016/j.fuel.2020.117171 . .

TY  - JOUR
AU  - Miladinović, Marija R.
AU  - Zdujić, Miodrag
AU  - Veljović, Đorđe
AU  - Krstić, Jugoslav
AU  - Banković-Ilić, Ivana B.
AU  - Veljković, Vlada B.
AU  - Stamenković, Olivera S.
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4350
AB  - The catalytic activity of the walnut shell ash was investigated in the biodiesel production by the sunflower oil methanolysis. The catalyst was characterized by the TG-DTA, XRD, Hg porosimetry, Ny physisorption, SEM, and Hammett method. In addition, the effects of the catalyst loading and the methanolto-oil molar ratio on the methyl esters synthesis were tested at the reaction temperature of 60 degrees C. The walnut shell ash provided a very fast reaction and a high FAME content (over 98%). As the reaction occurred in the absence of triacylglycerols mass transfer limitation, the pseudo-first-order model was employed for describing the kinetics of the reaction. The catalyst was successfully reused four times after the regeneration of the catalytic activity by recalcination at 800 degrees C.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Renewable Energy
T1  - Valorization of walnut shell ash as a catalyst for biodiesel production
EP  - 1043
SP  - 1033
VL  - 147
DO  - 10.1016/j.renene.2019.09.056
ER  - 

@article{
author = "Miladinović, Marija R. and Zdujić, Miodrag and Veljović, Đorđe and Krstić, Jugoslav and Banković-Ilić, Ivana B. and Veljković, Vlada B. and Stamenković, Olivera S.",
year = "2020",
abstract = "The catalytic activity of the walnut shell ash was investigated in the biodiesel production by the sunflower oil methanolysis. The catalyst was characterized by the TG-DTA, XRD, Hg porosimetry, Ny physisorption, SEM, and Hammett method. In addition, the effects of the catalyst loading and the methanolto-oil molar ratio on the methyl esters synthesis were tested at the reaction temperature of 60 degrees C. The walnut shell ash provided a very fast reaction and a high FAME content (over 98%). As the reaction occurred in the absence of triacylglycerols mass transfer limitation, the pseudo-first-order model was employed for describing the kinetics of the reaction. The catalyst was successfully reused four times after the regeneration of the catalytic activity by recalcination at 800 degrees C.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Renewable Energy",
title = "Valorization of walnut shell ash as a catalyst for biodiesel production",
pages = "1043-1033",
volume = "147",
doi = "10.1016/j.renene.2019.09.056"
}

Miladinović, M. R., Zdujić, M., Veljović, Đ., Krstić, J., Banković-Ilić, I. B., Veljković, V. B.,& Stamenković, O. S.. (2020). Valorization of walnut shell ash as a catalyst for biodiesel production. in Renewable Energy
Pergamon-Elsevier Science Ltd, Oxford., 147, 1033-1043.
https://doi.org/10.1016/j.renene.2019.09.056

Miladinović MR, Zdujić M, Veljović Đ, Krstić J, Banković-Ilić IB, Veljković VB, Stamenković OS. Valorization of walnut shell ash as a catalyst for biodiesel production. in Renewable Energy. 2020;147:1033-1043.
doi:10.1016/j.renene.2019.09.056 .

Miladinović, Marija R., Zdujić, Miodrag, Veljović, Đorđe, Krstić, Jugoslav, Banković-Ilić, Ivana B., Veljković, Vlada B., Stamenković, Olivera S., "Valorization of walnut shell ash as a catalyst for biodiesel production" in Renewable Energy, 147 (2020):1033-1043,
https://doi.org/10.1016/j.renene.2019.09.056 . .

TY  - CONF
AU  - Paunović, Anđela
AU  - Pavlović, Stefan
AU  - Marinković, Dalibor
AU  - Mojović, Ljiljana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4200
AB  - The green CaO/Zeolite catalyst for methanolysis of fatty oils was synthesized entirely from the waste materials. CaO derived from chicken eggshell was loaded onto fly ashbased zeolite catalyst carrier by the wet impregnation method using an alcohol solution. The effect of thermal activation at different temperatures ranging from 450 to 600 °C on catalytic activity was studied. The precursor and catalyst samples were characterized by XRD, FTIR, SEM, and Hg-porosimetry techniques. The catalytic tests were performed in a stirred batch reactor at the following reaction conditions: 60 °C - reaction temperature, 12:1 - methanol/oil molar ratio, and 4 wt% - catalyst concentration. The obtained results showed that the synthesized CaO/Zeolite catalyst has preserved alumosilicate framework-cancrinite type [1], with uniformly distributed calcium oxide (CaO) on its surface (Fig. 1c). It is shown that the catalyst sample calcinated at 550 °C exhibited the highest FAME content of 96.46%, which was achieved in 2 h (Fig. 2). Increasing temperature of calcination above 550 °C led to the formation of inactive calcium alumosilicate forms causing a decrease in the FAME content.
PB  - Belgrade : Serbian Chemical Society
C3  - Book of abstracts - Seventh Conference of the Young Chemists of Serbia
T1  - Biodiesel synthesis over green catalyst: The effect of thermal treatment of CaO/Zeolite precursor on catalytic activity
EP  - 101
SP  - 101
UR  - https://hdl.handle.net/21.15107/rcub_technorep_4200
ER  - 

@conference{
author = "Paunović, Anđela and Pavlović, Stefan and Marinković, Dalibor and Mojović, Ljiljana",
year = "2019",
abstract = "The green CaO/Zeolite catalyst for methanolysis of fatty oils was synthesized entirely from the waste materials. CaO derived from chicken eggshell was loaded onto fly ashbased zeolite catalyst carrier by the wet impregnation method using an alcohol solution. The effect of thermal activation at different temperatures ranging from 450 to 600 °C on catalytic activity was studied. The precursor and catalyst samples were characterized by XRD, FTIR, SEM, and Hg-porosimetry techniques. The catalytic tests were performed in a stirred batch reactor at the following reaction conditions: 60 °C - reaction temperature, 12:1 - methanol/oil molar ratio, and 4 wt% - catalyst concentration. The obtained results showed that the synthesized CaO/Zeolite catalyst has preserved alumosilicate framework-cancrinite type [1], with uniformly distributed calcium oxide (CaO) on its surface (Fig. 1c). It is shown that the catalyst sample calcinated at 550 °C exhibited the highest FAME content of 96.46%, which was achieved in 2 h (Fig. 2). Increasing temperature of calcination above 550 °C led to the formation of inactive calcium alumosilicate forms causing a decrease in the FAME content.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Book of abstracts - Seventh Conference of the Young Chemists of Serbia",
title = "Biodiesel synthesis over green catalyst: The effect of thermal treatment of CaO/Zeolite precursor on catalytic activity",
pages = "101-101",
url = "https://hdl.handle.net/21.15107/rcub_technorep_4200"
}

Paunović, A., Pavlović, S., Marinković, D.,& Mojović, L.. (2019). Biodiesel synthesis over green catalyst: The effect of thermal treatment of CaO/Zeolite precursor on catalytic activity. in Book of abstracts - Seventh Conference of the Young Chemists of Serbia
Belgrade : Serbian Chemical Society., 101-101.
https://hdl.handle.net/21.15107/rcub_technorep_4200

Paunović A, Pavlović S, Marinković D, Mojović L. Biodiesel synthesis over green catalyst: The effect of thermal treatment of CaO/Zeolite precursor on catalytic activity. in Book of abstracts - Seventh Conference of the Young Chemists of Serbia. 2019;:101-101.
https://hdl.handle.net/21.15107/rcub_technorep_4200 .

Paunović, Anđela, Pavlović, Stefan, Marinković, Dalibor, Mojović, Ljiljana, "Biodiesel synthesis over green catalyst: The effect of thermal treatment of CaO/Zeolite precursor on catalytic activity" in Book of abstracts - Seventh Conference of the Young Chemists of Serbia (2019):101-101,
https://hdl.handle.net/21.15107/rcub_technorep_4200 .

TY  - JOUR
AU  - Marković, Bojana M.
AU  - Spasojević, Vojislav
AU  - Dapčević, Aleksandra
AU  - Vuković, Zorica M.
AU  - Pavlović, Vladimir B.
AU  - Ranđelović, Danijela
AU  - Nastasović, Aleksandra
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4179
AB  - Magnetic and non-magnetic macroporous crosslinked copolymers of glycidyl methacrylate and trimethylolpropane trimethacrylate were prepared by suspension copolymerization and functionalized with diethylenetriamine. The samples were characterized by mercury porosimetry, scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), Fourier transform infrared spectroscopy analysis (FTIR-ATR), thermogravimetric analysis (TGA), X-ray diffractometry (XRD), atomic force microscopy (AFM), transmission electron microscopy (TEM) and SQUID magnetometry. The FTIR-ATR analysis of synthesized magnetic nanocomposites confirmed the presence of magnetite and successful aminofunctionalization. Non-functionalized and amino-functionalized nanocomposites exhibited superparamagnetic behavior at 300 K, with a saturation magnetization of 5.0 emu/g and 2.9 emu/g, respectively. TEM analysis of the magnetic nanocomposite has shown that magnetic nanoparticles were homogeneously dispersed in the polymer matrix. It was demonstrated that incorporation of magnetic nanoparticles enhanced the thermal stability of the magnetic nanocomposite in comparison to the initial non-magnetic macroporous copolymer.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Characterization of glycidyl methacrylate based magnetic nanocomposites
EP  - 35
IS  - 1
SP  - 25
VL  - 73
DO  - 10.2298/HEMIND181113006M
ER  - 

@article{
author = "Marković, Bojana M. and Spasojević, Vojislav and Dapčević, Aleksandra and Vuković, Zorica M. and Pavlović, Vladimir B. and Ranđelović, Danijela and Nastasović, Aleksandra",
year = "2019",
abstract = "Magnetic and non-magnetic macroporous crosslinked copolymers of glycidyl methacrylate and trimethylolpropane trimethacrylate were prepared by suspension copolymerization and functionalized with diethylenetriamine. The samples were characterized by mercury porosimetry, scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), Fourier transform infrared spectroscopy analysis (FTIR-ATR), thermogravimetric analysis (TGA), X-ray diffractometry (XRD), atomic force microscopy (AFM), transmission electron microscopy (TEM) and SQUID magnetometry. The FTIR-ATR analysis of synthesized magnetic nanocomposites confirmed the presence of magnetite and successful aminofunctionalization. Non-functionalized and amino-functionalized nanocomposites exhibited superparamagnetic behavior at 300 K, with a saturation magnetization of 5.0 emu/g and 2.9 emu/g, respectively. TEM analysis of the magnetic nanocomposite has shown that magnetic nanoparticles were homogeneously dispersed in the polymer matrix. It was demonstrated that incorporation of magnetic nanoparticles enhanced the thermal stability of the magnetic nanocomposite in comparison to the initial non-magnetic macroporous copolymer.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Characterization of glycidyl methacrylate based magnetic nanocomposites",
pages = "35-25",
number = "1",
volume = "73",
doi = "10.2298/HEMIND181113006M"
}

Marković, B. M., Spasojević, V., Dapčević, A., Vuković, Z. M., Pavlović, V. B., Ranđelović, D.,& Nastasović, A.. (2019). Characterization of glycidyl methacrylate based magnetic nanocomposites. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 73(1), 25-35.
https://doi.org/10.2298/HEMIND181113006M

Marković BM, Spasojević V, Dapčević A, Vuković ZM, Pavlović VB, Ranđelović D, Nastasović A. Characterization of glycidyl methacrylate based magnetic nanocomposites. in Hemijska industrija. 2019;73(1):25-35.
doi:10.2298/HEMIND181113006M .

Marković, Bojana M., Spasojević, Vojislav, Dapčević, Aleksandra, Vuković, Zorica M., Pavlović, Vladimir B., Ranđelović, Danijela, Nastasović, Aleksandra, "Characterization of glycidyl methacrylate based magnetic nanocomposites" in Hemijska industrija, 73, no. 1 (2019):25-35,
https://doi.org/10.2298/HEMIND181113006M . .

TY  - JOUR
AU  - Meseldžija, Slađana
AU  - Petrović, Jelena
AU  - Onjia, Antonije
AU  - Volkov-Husović, Tatjana
AU  - Nešić, Aleksandra
AU  - Vukelić, Nikola
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4258
AB  - In this study, unmodified lemon peel, as agro-industrial waste, was used to investigate removal efficiency of copper ions from aqueous solutions and mining wastewater. The effects of solution pH, adsorption time, metal ion concentration and dose of adsorbent on sorption were studied in batch experiments. The maximum Langmuir adsorption capacity was evaluated to be 13.2 mg/g at optimum contact time of 15 min. The maximum removal of copper ions from mining-wastewater at natural pH (pH3) was 89%, indicating that lemon peel could be employed as an effective low-cost adsorbent for removal of copper ions from wastewater at acidic conditions.
PB  - Elsevier Science Inc, New York
T2  - Journal of Industrial and Engineering Chemistry
T1  - Utilization of agro-industrial waste for removal of copper ions from aqueous solutions and mining-wastewater
EP  - 252
SP  - 246
VL  - 75
DO  - 10.1016/j.jiec.2019.03.031
ER  - 

@article{
author = "Meseldžija, Slađana and Petrović, Jelena and Onjia, Antonije and Volkov-Husović, Tatjana and Nešić, Aleksandra and Vukelić, Nikola",
year = "2019",
abstract = "In this study, unmodified lemon peel, as agro-industrial waste, was used to investigate removal efficiency of copper ions from aqueous solutions and mining wastewater. The effects of solution pH, adsorption time, metal ion concentration and dose of adsorbent on sorption were studied in batch experiments. The maximum Langmuir adsorption capacity was evaluated to be 13.2 mg/g at optimum contact time of 15 min. The maximum removal of copper ions from mining-wastewater at natural pH (pH3) was 89%, indicating that lemon peel could be employed as an effective low-cost adsorbent for removal of copper ions from wastewater at acidic conditions.",
publisher = "Elsevier Science Inc, New York",
journal = "Journal of Industrial and Engineering Chemistry",
title = "Utilization of agro-industrial waste for removal of copper ions from aqueous solutions and mining-wastewater",
pages = "252-246",
volume = "75",
doi = "10.1016/j.jiec.2019.03.031"
}

Meseldžija, S., Petrović, J., Onjia, A., Volkov-Husović, T., Nešić, A.,& Vukelić, N.. (2019). Utilization of agro-industrial waste for removal of copper ions from aqueous solutions and mining-wastewater. in Journal of Industrial and Engineering Chemistry
Elsevier Science Inc, New York., 75, 246-252.
https://doi.org/10.1016/j.jiec.2019.03.031

Meseldžija S, Petrović J, Onjia A, Volkov-Husović T, Nešić A, Vukelić N. Utilization of agro-industrial waste for removal of copper ions from aqueous solutions and mining-wastewater. in Journal of Industrial and Engineering Chemistry. 2019;75:246-252.
doi:10.1016/j.jiec.2019.03.031 .

Meseldžija, Slađana, Petrović, Jelena, Onjia, Antonije, Volkov-Husović, Tatjana, Nešić, Aleksandra, Vukelić, Nikola, "Utilization of agro-industrial waste for removal of copper ions from aqueous solutions and mining-wastewater" in Journal of Industrial and Engineering Chemistry, 75 (2019):246-252,
https://doi.org/10.1016/j.jiec.2019.03.031 . .

TY  - JOUR
AU  - Zdujić, Miodrag
AU  - Lukić, Ivana
AU  - Kesić, Željka
AU  - Janković-Častvan, Ivona
AU  - Marković, Smilja
AU  - Jovalekić, Čedomir
AU  - Skala, Dejan
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4261
AB  - The powder mixtures of calcium oxide (CaO) and silica gel (SiO2) in molar ratios of 1:1, 1.5:1, 2:1 and 3:1 were mechanochemically treated with the addition of water, and were subsequently calcined with a goal of synthesizing CaSiO3, Ca3Si2O7, Ca2SiO4 compounds and CaO/Ca2SiO4 two-phase mixture. The prepared materials were characterized by XRD, FTIR, SEM/EDS, particle size laser diffraction (PSLD), UV-vis diffuse reflectance spectroscopy (DRS), N-2 adsorption/desorption isotherms, Hammett indicator for basic strength and volumetric analysis for free CaO content. The catalytic activity of calcium silicates with different Ca/Si ratios was tested in the transesterification of triacylglycerols (sunflower oil) with methanol. Samples obtained with initial composition 2CaO center dot SiO2 and 3CaO center dot SiO2 calcined at 700 degrees C, and 3CaO center dot SiO2 calcined at 900 degrees C had high catalytic activity, resulting with triacylglycerols conversion and fatty acids methyl ester formation (FAME or biodiesel) above 96%. The activity of these samples can be attributed to the existence of free CaO defined by CaO/Ca2SiO4 complex mixture. The effect of different amount of catalyst used for transesterification (0.2-2 wt%) was analyzed using the most active catalyst i.e. 3CaO center dot SiO2 calcined at 700 degrees C as well as possibility of its reuse for biodiesel synthesis. It was also found that CaSiO3, Ca3Si2O7 and Ca2SiO4, phases did not possess catalytic activity.
PB  - Elsevier Science Bv, Amsterdam
T2  - Advanced Powder Technology
T1  - Synthesis of CaO-SiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil
EP  - 1150
IS  - 6
SP  - 1141
VL  - 30
DO  - 10.1016/j.apt.2019.03.009
ER  - 

@article{
author = "Zdujić, Miodrag and Lukić, Ivana and Kesić, Željka and Janković-Častvan, Ivona and Marković, Smilja and Jovalekić, Čedomir and Skala, Dejan",
year = "2019",
abstract = "The powder mixtures of calcium oxide (CaO) and silica gel (SiO2) in molar ratios of 1:1, 1.5:1, 2:1 and 3:1 were mechanochemically treated with the addition of water, and were subsequently calcined with a goal of synthesizing CaSiO3, Ca3Si2O7, Ca2SiO4 compounds and CaO/Ca2SiO4 two-phase mixture. The prepared materials were characterized by XRD, FTIR, SEM/EDS, particle size laser diffraction (PSLD), UV-vis diffuse reflectance spectroscopy (DRS), N-2 adsorption/desorption isotherms, Hammett indicator for basic strength and volumetric analysis for free CaO content. The catalytic activity of calcium silicates with different Ca/Si ratios was tested in the transesterification of triacylglycerols (sunflower oil) with methanol. Samples obtained with initial composition 2CaO center dot SiO2 and 3CaO center dot SiO2 calcined at 700 degrees C, and 3CaO center dot SiO2 calcined at 900 degrees C had high catalytic activity, resulting with triacylglycerols conversion and fatty acids methyl ester formation (FAME or biodiesel) above 96%. The activity of these samples can be attributed to the existence of free CaO defined by CaO/Ca2SiO4 complex mixture. The effect of different amount of catalyst used for transesterification (0.2-2 wt%) was analyzed using the most active catalyst i.e. 3CaO center dot SiO2 calcined at 700 degrees C as well as possibility of its reuse for biodiesel synthesis. It was also found that CaSiO3, Ca3Si2O7 and Ca2SiO4, phases did not possess catalytic activity.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Advanced Powder Technology",
title = "Synthesis of CaO-SiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil",
pages = "1150-1141",
number = "6",
volume = "30",
doi = "10.1016/j.apt.2019.03.009"
}

Zdujić, M., Lukić, I., Kesić, Ž., Janković-Častvan, I., Marković, S., Jovalekić, Č.,& Skala, D.. (2019). Synthesis of CaO-SiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil. in Advanced Powder Technology
Elsevier Science Bv, Amsterdam., 30(6), 1141-1150.
https://doi.org/10.1016/j.apt.2019.03.009

Zdujić M, Lukić I, Kesić Ž, Janković-Častvan I, Marković S, Jovalekić Č, Skala D. Synthesis of CaO-SiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil. in Advanced Powder Technology. 2019;30(6):1141-1150.
doi:10.1016/j.apt.2019.03.009 .

Zdujić, Miodrag, Lukić, Ivana, Kesić, Željka, Janković-Častvan, Ivona, Marković, Smilja, Jovalekić, Čedomir, Skala, Dejan, "Synthesis of CaO-SiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil" in Advanced Powder Technology, 30, no. 6 (2019):1141-1150,
https://doi.org/10.1016/j.apt.2019.03.009 . .

TY  - JOUR
AU  - Miladinović, Marija R.
AU  - Stojković, Ivan
AU  - Velicković, Ana V.
AU  - Stamenković, Olivera S.
AU  - Banković-Ilić, Ivana B.
AU  - Veljković, Vlada B.
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4067
AB  - Continuous biodiesel production from a waste pig-roasting lard, methanol and KOH was carried out in a reciprocating plate reactor (RPR) using a factorial design containing three process factors, namely methanol/lard molar ratio, catalyst loading, and normalized height of the reactor. The main goals were to optimize the influential process factors with respect to biodiesel purity using the response surface methodology and to model the kinetics of the transesterification reaction in order to describe the change of triacylglycerols (TAG) and fatty acid methyl esters (FAME) concentrations along the RPR height. The first-order rate law was proved for both the reaction and the mass transfer. The model of the changing reaction mechanism and mass transfer of TAG was also applicable. Both kinetic models agreed with the experimental concentrations of TAG and FAME determined along the RPR height.
PB  - Chemical Industry Press Co Ltd, Beijing
T2  - Chinese Journal of Chemical Engineering
T1  - Optimization and kinetic modeling of waste lard methanolysis in a continuous reciprocating plate reactor
EP  - 2490
IS  - 10
SP  - 2481
VL  - 27
DO  - 10.1016/j.cjche.2019.02.019
ER  - 

@article{
author = "Miladinović, Marija R. and Stojković, Ivan and Velicković, Ana V. and Stamenković, Olivera S. and Banković-Ilić, Ivana B. and Veljković, Vlada B.",
year = "2019",
abstract = "Continuous biodiesel production from a waste pig-roasting lard, methanol and KOH was carried out in a reciprocating plate reactor (RPR) using a factorial design containing three process factors, namely methanol/lard molar ratio, catalyst loading, and normalized height of the reactor. The main goals were to optimize the influential process factors with respect to biodiesel purity using the response surface methodology and to model the kinetics of the transesterification reaction in order to describe the change of triacylglycerols (TAG) and fatty acid methyl esters (FAME) concentrations along the RPR height. The first-order rate law was proved for both the reaction and the mass transfer. The model of the changing reaction mechanism and mass transfer of TAG was also applicable. Both kinetic models agreed with the experimental concentrations of TAG and FAME determined along the RPR height.",
publisher = "Chemical Industry Press Co Ltd, Beijing",
journal = "Chinese Journal of Chemical Engineering",
title = "Optimization and kinetic modeling of waste lard methanolysis in a continuous reciprocating plate reactor",
pages = "2490-2481",
number = "10",
volume = "27",
doi = "10.1016/j.cjche.2019.02.019"
}

Miladinović, M. R., Stojković, I., Velicković, A. V., Stamenković, O. S., Banković-Ilić, I. B.,& Veljković, V. B.. (2019). Optimization and kinetic modeling of waste lard methanolysis in a continuous reciprocating plate reactor. in Chinese Journal of Chemical Engineering
Chemical Industry Press Co Ltd, Beijing., 27(10), 2481-2490.
https://doi.org/10.1016/j.cjche.2019.02.019

Miladinović MR, Stojković I, Velicković AV, Stamenković OS, Banković-Ilić IB, Veljković VB. Optimization and kinetic modeling of waste lard methanolysis in a continuous reciprocating plate reactor. in Chinese Journal of Chemical Engineering. 2019;27(10):2481-2490.
doi:10.1016/j.cjche.2019.02.019 .

Miladinović, Marija R., Stojković, Ivan, Velicković, Ana V., Stamenković, Olivera S., Banković-Ilić, Ivana B., Veljković, Vlada B., "Optimization and kinetic modeling of waste lard methanolysis in a continuous reciprocating plate reactor" in Chinese Journal of Chemical Engineering, 27, no. 10 (2019):2481-2490,
https://doi.org/10.1016/j.cjche.2019.02.019 . .

TY  - JOUR
AU  - Avramović, Jelena M.
AU  - Radosavljević, Dragana B.
AU  - Veličković, Ana V.
AU  - Stojković, Ivan
AU  - Stamenković, Olivera S.
AU  - Veljković, Vlada B.
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4282
AB  - The present study compares the performances of the regression models developed by the response surface methodology combined with the full factorial, Box-Behnken or face central composite designs applied for the ultrasound-assisted KOH-catalyzed methanolysis of sunflower oil. While all models led to similar optimal reaction conditions, the models based on the simpler designs had the smaller corrected Akaike information criterion values, the insignificant lack of fit and the more favorable statistical criteria than the model based on the full factorial design. Including fewer experiments, the Box-Behnken design can be recommended for the optimization of ultrasound-assisted biodiesel production processes.
AB  - U radu se porede performanse regresionih modela razvijenih na osnovu kombinovanja metodologije površine odziva sa punim faktorijelnim, Boks-Benken-ovim ili centralnim kompozitnim planom kada se primene na ultrazvukom podržanu bazno-katalizovanu metanolizu suncokretovog ulja. Iako su svi modeli dali slične optimalne uslove reakcije, modeli zasnovani na jednostavnijim planovima imali su manje vrednosti Akaike-ovog informacionog kriterijuma, neznačajnu vrednost odstupanja od modela i povoljnije statističke kriterijume u odnosu na model zasnovan na punom faktorijelnim planu. Boks-Benken-ov plan, koji zahteva manji broj eksperimenata, može da se preporuči za optimizaciju proizvodnje biodizela u ultrazvučnom reaktoru.
PB  - Engineering Society for Corrosion, Belgrade, Serbia
T2  - Zaštita materijala
T1  - Statistical modeling and optimization of ultrasound-assisted biodiesel production using various experimental designs
T1  - Statističko modelovanje i optimizacija proizvodnje biodizela u prisustvu ultrazvuka primenom različitih eksperimentalnih planova
EP  - 80
IS  - 1
SP  - 70
VL  - 60
DO  - 10.5937/zasmat1901070A
ER  - 

@article{
author = "Avramović, Jelena M. and Radosavljević, Dragana B. and Veličković, Ana V. and Stojković, Ivan and Stamenković, Olivera S. and Veljković, Vlada B.",
year = "2019",
abstract = "The present study compares the performances of the regression models developed by the response surface methodology combined with the full factorial, Box-Behnken or face central composite designs applied for the ultrasound-assisted KOH-catalyzed methanolysis of sunflower oil. While all models led to similar optimal reaction conditions, the models based on the simpler designs had the smaller corrected Akaike information criterion values, the insignificant lack of fit and the more favorable statistical criteria than the model based on the full factorial design. Including fewer experiments, the Box-Behnken design can be recommended for the optimization of ultrasound-assisted biodiesel production processes., U radu se porede performanse regresionih modela razvijenih na osnovu kombinovanja metodologije površine odziva sa punim faktorijelnim, Boks-Benken-ovim ili centralnim kompozitnim planom kada se primene na ultrazvukom podržanu bazno-katalizovanu metanolizu suncokretovog ulja. Iako su svi modeli dali slične optimalne uslove reakcije, modeli zasnovani na jednostavnijim planovima imali su manje vrednosti Akaike-ovog informacionog kriterijuma, neznačajnu vrednost odstupanja od modela i povoljnije statističke kriterijume u odnosu na model zasnovan na punom faktorijelnim planu. Boks-Benken-ov plan, koji zahteva manji broj eksperimenata, može da se preporuči za optimizaciju proizvodnje biodizela u ultrazvučnom reaktoru.",
publisher = "Engineering Society for Corrosion, Belgrade, Serbia",
journal = "Zaštita materijala",
title = "Statistical modeling and optimization of ultrasound-assisted biodiesel production using various experimental designs, Statističko modelovanje i optimizacija proizvodnje biodizela u prisustvu ultrazvuka primenom različitih eksperimentalnih planova",
pages = "80-70",
number = "1",
volume = "60",
doi = "10.5937/zasmat1901070A"
}

Avramović, J. M., Radosavljević, D. B., Veličković, A. V., Stojković, I., Stamenković, O. S.,& Veljković, V. B.. (2019). Statistical modeling and optimization of ultrasound-assisted biodiesel production using various experimental designs. in Zaštita materijala
Engineering Society for Corrosion, Belgrade, Serbia., 60(1), 70-80.
https://doi.org/10.5937/zasmat1901070A

Avramović JM, Radosavljević DB, Veličković AV, Stojković I, Stamenković OS, Veljković VB. Statistical modeling and optimization of ultrasound-assisted biodiesel production using various experimental designs. in Zaštita materijala. 2019;60(1):70-80.
doi:10.5937/zasmat1901070A .

Avramović, Jelena M., Radosavljević, Dragana B., Veličković, Ana V., Stojković, Ivan, Stamenković, Olivera S., Veljković, Vlada B., "Statistical modeling and optimization of ultrasound-assisted biodiesel production using various experimental designs" in Zaštita materijala, 60, no. 1 (2019):70-80,
https://doi.org/10.5937/zasmat1901070A . .

TY  - JOUR
AU  - Mićović, Dragana
AU  - Pagnacco, Maja C.
AU  - Banković, Predrag
AU  - Maletaškić, Jelena
AU  - Matović, Branko
AU  - Đokić, Veljko
AU  - Stojmenović, Marija
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4060
AB  - Potential non-toxic pink and red ceramic pigments based on CeO2 were successfully synthesized by self-propagating room temperature method and thermally treated at 600, 900 and 1200 degrees C for 15 min. The structure, morphology and optical properties, as well as thermal stability of Ce1-xErxO2-delta and Ce1-xPrxO2-delta (x = 0.05) were examined. Single-phase composition of all obtained CeO2 pigments was confirmed using XRPD method and Raman spectroscopy and it was not dependent on temperature. The mechanism of structural behaviour was thoroughly examined using Raman and FTIR spectroscopy. Nanometric dimensions of the crystallites of all pigments were confirmed using XRPD, TEM and FE-SEM analysis. Colour properties were dependent on the temperature treatment, and their position in the chromaticity diagram was studied using UV/VIS spectrophotometry. Colour efficiency measurements were supplemented by colorimetric analysis. It is proved that all samples are thermally stable in the investigated temperature range (up to 1200 degrees C), and their potential application as environmentally friendly pigments of desired colour is confirmed.
PB  - Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad
T2  - Processing and Application of Ceramics
T1  - The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study
EP  - 321
IS  - 3
SP  - 310
VL  - 13
DO  - 10.2298/PAC1903310M
ER  - 

@article{
author = "Mićović, Dragana and Pagnacco, Maja C. and Banković, Predrag and Maletaškić, Jelena and Matović, Branko and Đokić, Veljko and Stojmenović, Marija",
year = "2019",
abstract = "Potential non-toxic pink and red ceramic pigments based on CeO2 were successfully synthesized by self-propagating room temperature method and thermally treated at 600, 900 and 1200 degrees C for 15 min. The structure, morphology and optical properties, as well as thermal stability of Ce1-xErxO2-delta and Ce1-xPrxO2-delta (x = 0.05) were examined. Single-phase composition of all obtained CeO2 pigments was confirmed using XRPD method and Raman spectroscopy and it was not dependent on temperature. The mechanism of structural behaviour was thoroughly examined using Raman and FTIR spectroscopy. Nanometric dimensions of the crystallites of all pigments were confirmed using XRPD, TEM and FE-SEM analysis. Colour properties were dependent on the temperature treatment, and their position in the chromaticity diagram was studied using UV/VIS spectrophotometry. Colour efficiency measurements were supplemented by colorimetric analysis. It is proved that all samples are thermally stable in the investigated temperature range (up to 1200 degrees C), and their potential application as environmentally friendly pigments of desired colour is confirmed.",
publisher = "Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad",
journal = "Processing and Application of Ceramics",
title = "The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study",
pages = "321-310",
number = "3",
volume = "13",
doi = "10.2298/PAC1903310M"
}

Mićović, D., Pagnacco, M. C., Banković, P., Maletaškić, J., Matović, B., Đokić, V.,& Stojmenović, M.. (2019). The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study. in Processing and Application of Ceramics
Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad., 13(3), 310-321.
https://doi.org/10.2298/PAC1903310M

Mićović D, Pagnacco MC, Banković P, Maletaškić J, Matović B, Đokić V, Stojmenović M. The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study. in Processing and Application of Ceramics. 2019;13(3):310-321.
doi:10.2298/PAC1903310M .

Mićović, Dragana, Pagnacco, Maja C., Banković, Predrag, Maletaškić, Jelena, Matović, Branko, Đokić, Veljko, Stojmenović, Marija, "The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study" in Processing and Application of Ceramics, 13, no. 3 (2019):310-321,
https://doi.org/10.2298/PAC1903310M . .

TY  - JOUR
AU  - Marković, Marija
AU  - Marinović, Sanja
AU  - Mudrinić, Tihana
AU  - Ajduković, Marija
AU  - Jović-Jovičić, Nataša
AU  - Mojović, Zorica
AU  - Orlić, Jovana
AU  - Milutinović Nikolić, Aleksandra
AU  - Banković, Predrag
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5883
AB  - Aluminum pillared clay was synthesized and impregnated with Co2+ (CoAP), using incipient wetness impregnation method. The obtained CoAP was characterized by chemical analysis, XRPD, SEM with EDS, XPS and low temperature N2 physisorption. By these methods the incorporation of Co2+ was confirmed in both micro and mesoporous region. The synthesized material was investigated as a catalyst in catalytic oxidation of organic water pollutants – dyes – in the presence of Oxone® (peroxymonosulfate). Oxone® is a precursor of sulfate radicals. Tartrazine was chosen as a model dye pollutant. The influence of the mass of the catalyst, temperature and initial pH was investigated. Temperature increase was beneficial for dye degradation rate. The reaction rate was the highest for initial pH values around those corresponding to neutral conditions, somewhat slower for pH < 4 values, while for pH > 10 decolorization was significantly less expressed. Along with decolorization of tartrazine solution the formation and degradation of tartrazine catalytic oxidation products were monitored using UV–Vis spectroscopy. CoAP was found to be efficient catalyst in Oxone® induced catalytic degradation of both tartrazine and detected products of its degradation.
PB  - Elsevier
T2  - Applied Clay Science
T1  - Co(II) impregnated Al(III)-pillared montmorillonite–Synthesis, characterization and catalytic properties in Oxone® activation for dye degradation
SP  - 105276
VL  - 182
DO  - 10.1016/j.clay.2019.105276
ER  - 

@article{
author = "Marković, Marija and Marinović, Sanja and Mudrinić, Tihana and Ajduković, Marija and Jović-Jovičić, Nataša and Mojović, Zorica and Orlić, Jovana and Milutinović Nikolić, Aleksandra and Banković, Predrag",
year = "2019",
abstract = "Aluminum pillared clay was synthesized and impregnated with Co2+ (CoAP), using incipient wetness impregnation method. The obtained CoAP was characterized by chemical analysis, XRPD, SEM with EDS, XPS and low temperature N2 physisorption. By these methods the incorporation of Co2+ was confirmed in both micro and mesoporous region. The synthesized material was investigated as a catalyst in catalytic oxidation of organic water pollutants – dyes – in the presence of Oxone® (peroxymonosulfate). Oxone® is a precursor of sulfate radicals. Tartrazine was chosen as a model dye pollutant. The influence of the mass of the catalyst, temperature and initial pH was investigated. Temperature increase was beneficial for dye degradation rate. The reaction rate was the highest for initial pH values around those corresponding to neutral conditions, somewhat slower for pH < 4 values, while for pH > 10 decolorization was significantly less expressed. Along with decolorization of tartrazine solution the formation and degradation of tartrazine catalytic oxidation products were monitored using UV–Vis spectroscopy. CoAP was found to be efficient catalyst in Oxone® induced catalytic degradation of both tartrazine and detected products of its degradation.",
publisher = "Elsevier",
journal = "Applied Clay Science",
title = "Co(II) impregnated Al(III)-pillared montmorillonite–Synthesis, characterization and catalytic properties in Oxone® activation for dye degradation",
pages = "105276",
volume = "182",
doi = "10.1016/j.clay.2019.105276"
}

Marković, M., Marinović, S., Mudrinić, T., Ajduković, M., Jović-Jovičić, N., Mojović, Z., Orlić, J., Milutinović Nikolić, A.,& Banković, P.. (2019). Co(II) impregnated Al(III)-pillared montmorillonite–Synthesis, characterization and catalytic properties in Oxone® activation for dye degradation. in Applied Clay Science
Elsevier., 182, 105276.
https://doi.org/10.1016/j.clay.2019.105276

Marković M, Marinović S, Mudrinić T, Ajduković M, Jović-Jovičić N, Mojović Z, Orlić J, Milutinović Nikolić A, Banković P. Co(II) impregnated Al(III)-pillared montmorillonite–Synthesis, characterization and catalytic properties in Oxone® activation for dye degradation. in Applied Clay Science. 2019;182:105276.
doi:10.1016/j.clay.2019.105276 .

Marković, Marija, Marinović, Sanja, Mudrinić, Tihana, Ajduković, Marija, Jović-Jovičić, Nataša, Mojović, Zorica, Orlić, Jovana, Milutinović Nikolić, Aleksandra, Banković, Predrag, "Co(II) impregnated Al(III)-pillared montmorillonite–Synthesis, characterization and catalytic properties in Oxone® activation for dye degradation" in Applied Clay Science, 182 (2019):105276,
https://doi.org/10.1016/j.clay.2019.105276 . .

TY  - JOUR
AU  - Janković, Bojan
AU  - Manić, Nebojša
AU  - Dodevski, Vladimir
AU  - Popović, Jasmina
AU  - Rušmirović, Jelena D.
AU  - Tosić, Miloš
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5879
AB  - This paper describes the pyrolysis of Poplar fluff (from Populus alba) using on-line apparatus, and carbonization process at 850 degrees C using the fixed bed reactor. Characteristics of pyrolysis products were examined. Elemental and chemical analyses were shown that Poplar fluff has higher energy content characterized by increased content of fibrous structure (particularly cellulose). Independent parallel reactions model very well describes devolatilization process. It was found that increased amount of extractives can significantly affect on increased release of light gaseous products, but declining hydrocarbons, mostly the alkanes. Liquid product is mainly composed of phenolics, aldehydes, acids, esters and ketones. The carbonization process produces the great abundance of polycyclic aromatic hydrocarbons (PAH's), where naphthalene is the most abundant. Mechanism for PAH's formation was suggested. This study represents the first step in a much wider and more comprehensive way in thermal conversion processes of this type of fuel.
PB  - Elsevier Sci Ltd, Oxford
T2  - Fuel
T1  - Characterization analysis of Poplar fluff pyrolysis products. Multi-component kinetic study
EP  - 128
SP  - 111
VL  - 238
DO  - 10.1016/j.fuel.2018.10.064
ER  - 

@article{
author = "Janković, Bojan and Manić, Nebojša and Dodevski, Vladimir and Popović, Jasmina and Rušmirović, Jelena D. and Tosić, Miloš",
year = "2019",
abstract = "This paper describes the pyrolysis of Poplar fluff (from Populus alba) using on-line apparatus, and carbonization process at 850 degrees C using the fixed bed reactor. Characteristics of pyrolysis products were examined. Elemental and chemical analyses were shown that Poplar fluff has higher energy content characterized by increased content of fibrous structure (particularly cellulose). Independent parallel reactions model very well describes devolatilization process. It was found that increased amount of extractives can significantly affect on increased release of light gaseous products, but declining hydrocarbons, mostly the alkanes. Liquid product is mainly composed of phenolics, aldehydes, acids, esters and ketones. The carbonization process produces the great abundance of polycyclic aromatic hydrocarbons (PAH's), where naphthalene is the most abundant. Mechanism for PAH's formation was suggested. This study represents the first step in a much wider and more comprehensive way in thermal conversion processes of this type of fuel.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Fuel",
title = "Characterization analysis of Poplar fluff pyrolysis products. Multi-component kinetic study",
pages = "128-111",
volume = "238",
doi = "10.1016/j.fuel.2018.10.064"
}

Janković, B., Manić, N., Dodevski, V., Popović, J., Rušmirović, J. D.,& Tosić, M.. (2019). Characterization analysis of Poplar fluff pyrolysis products. Multi-component kinetic study. in Fuel
Elsevier Sci Ltd, Oxford., 238, 111-128.
https://doi.org/10.1016/j.fuel.2018.10.064

Janković B, Manić N, Dodevski V, Popović J, Rušmirović JD, Tosić M. Characterization analysis of Poplar fluff pyrolysis products. Multi-component kinetic study. in Fuel. 2019;238:111-128.
doi:10.1016/j.fuel.2018.10.064 .

Janković, Bojan, Manić, Nebojša, Dodevski, Vladimir, Popović, Jasmina, Rušmirović, Jelena D., Tosić, Miloš, "Characterization analysis of Poplar fluff pyrolysis products. Multi-component kinetic study" in Fuel, 238 (2019):111-128,
https://doi.org/10.1016/j.fuel.2018.10.064 . .

TY  - JOUR
AU  - Zdujić, Miodrag
AU  - Petrović, Slobodan
AU  - Valentić, Nataša
AU  - Mijin, Dušan
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4278
AB  - Milling of cyanoacetamide and acetoacetic ester as reactants, in the presence of KOH as the catalyst and ethanol as a viscous control agent (VCA) was performed in a planetary ball mill with the goal of investigating the effect of mechanochemical treatment for the synthesis of 3-cyano-6hydroxy-4-methyl-2-pyridone at room temperature. The mechanochemical synthesis was performed under various milling parameters, i.e. milling time up to 4 h, number and size of balls, angular velocity as well as molar ratio of reactants and the amount of catalyst. The obtained product was characterized by m.p., UV, IR and NMR data. It was fond that the dominant process parameter is the milling time while others are of less importance. The highest isolated yield after milling was up to 56%. The combination of milling and aging increase yield over 60%.
AB  - Mlevenje cijanoacetoamida (2) i acetsirćetnog estra (1) kao reaktanata, u prisustvu KOH kao katalizatora i etanola kao agensa kojim se kontroliše viskoznost, izvedeno je u planetarnom mlinu radi ispitivanja mogućnosti mehanohemijske sinteze 3-cijano-6-hidroksi-4-metil-2-piridona (3) na sobnoj temperaturi. Mehanohemijski tretman je izveden sa različitim parametrima mlevenja: vremenom mlevenja do 4 h, različitom veličinom i brojem kuglica, različitom brzinom obrtanja, kao i različitim molarnim odnosom reaktanata i katalizatora. Dobijeni proizvod je okarakterisan određivanjem temperature topljenja, UV, IR i NMR analizama. Nađeno je da je dominantni procesni parametar vreme mlevenja, dok su ostali od manjeg uticaja. Najveći prinos izolovanog proizvoda je oko 56%, dok se naknadnim "odležavanjem" prinos povećava preko 60%.
PB  - Engineering Society for Corrosion, Belgrade, Serbia
T2  - Zaštita materijala
T1  - On the synthesis of 3-cyano-6-hydroxy-4-methyl-2-pyridone at room temperature
T1  - O sintezi 3-cijano-6-hidroksi-4-metil-2-piridona na sobnoj temperaturi
EP  - 236
IS  - 3
SP  - 229
VL  - 60
DO  - 10.5937/zasmat1903229Z
ER  - 

@article{
author = "Zdujić, Miodrag and Petrović, Slobodan and Valentić, Nataša and Mijin, Dušan",
year = "2019",
abstract = "Milling of cyanoacetamide and acetoacetic ester as reactants, in the presence of KOH as the catalyst and ethanol as a viscous control agent (VCA) was performed in a planetary ball mill with the goal of investigating the effect of mechanochemical treatment for the synthesis of 3-cyano-6hydroxy-4-methyl-2-pyridone at room temperature. The mechanochemical synthesis was performed under various milling parameters, i.e. milling time up to 4 h, number and size of balls, angular velocity as well as molar ratio of reactants and the amount of catalyst. The obtained product was characterized by m.p., UV, IR and NMR data. It was fond that the dominant process parameter is the milling time while others are of less importance. The highest isolated yield after milling was up to 56%. The combination of milling and aging increase yield over 60%., Mlevenje cijanoacetoamida (2) i acetsirćetnog estra (1) kao reaktanata, u prisustvu KOH kao katalizatora i etanola kao agensa kojim se kontroliše viskoznost, izvedeno je u planetarnom mlinu radi ispitivanja mogućnosti mehanohemijske sinteze 3-cijano-6-hidroksi-4-metil-2-piridona (3) na sobnoj temperaturi. Mehanohemijski tretman je izveden sa različitim parametrima mlevenja: vremenom mlevenja do 4 h, različitom veličinom i brojem kuglica, različitom brzinom obrtanja, kao i različitim molarnim odnosom reaktanata i katalizatora. Dobijeni proizvod je okarakterisan određivanjem temperature topljenja, UV, IR i NMR analizama. Nađeno je da je dominantni procesni parametar vreme mlevenja, dok su ostali od manjeg uticaja. Najveći prinos izolovanog proizvoda je oko 56%, dok se naknadnim "odležavanjem" prinos povećava preko 60%.",
publisher = "Engineering Society for Corrosion, Belgrade, Serbia",
journal = "Zaštita materijala",
title = "On the synthesis of 3-cyano-6-hydroxy-4-methyl-2-pyridone at room temperature, O sintezi 3-cijano-6-hidroksi-4-metil-2-piridona na sobnoj temperaturi",
pages = "236-229",
number = "3",
volume = "60",
doi = "10.5937/zasmat1903229Z"
}

Zdujić, M., Petrović, S., Valentić, N.,& Mijin, D.. (2019). On the synthesis of 3-cyano-6-hydroxy-4-methyl-2-pyridone at room temperature. in Zaštita materijala
Engineering Society for Corrosion, Belgrade, Serbia., 60(3), 229-236.
https://doi.org/10.5937/zasmat1903229Z

Zdujić M, Petrović S, Valentić N, Mijin D. On the synthesis of 3-cyano-6-hydroxy-4-methyl-2-pyridone at room temperature. in Zaštita materijala. 2019;60(3):229-236.
doi:10.5937/zasmat1903229Z .

Zdujić, Miodrag, Petrović, Slobodan, Valentić, Nataša, Mijin, Dušan, "On the synthesis of 3-cyano-6-hydroxy-4-methyl-2-pyridone at room temperature" in Zaštita materijala, 60, no. 3 (2019):229-236,
https://doi.org/10.5937/zasmat1903229Z . .

TY  - JOUR
AU  - Ekmeščić, Bojana
AU  - Maksin, Danijela
AU  - Marković, Jelena P.
AU  - Vuković, Zorica M.
AU  - Hercigonja, Radmila
AU  - Nastasović, Aleksandra
AU  - Onjia, Antonije
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4104
AB  - The presented study describes macroporous crosslinked poly(glycidyl methacrylateco-ethylene glycol dimethacrylate) [PGME] functionalized with diethylenetriamine [PGME-deta] as a potential recovery agent for Mo(VI) oxyanions from aqueous solutions. Sorption studies were carried out by varying experimental conditions (pH, time, concentration, temperature). Kinetics of Mo(VI) sorption was investigated in batch (static) experiments, in the temperature range 298-343 K. Sorption dynamics data were fitted to seven chemical-reaction and particle-diffusion models. The kinetics studies showed that Mo(VI) sorption adhered to the pseudo-second-order model under all investigated operating conditions. The sorption kinetics was determined to be governed by both the intraparticle diffusion and the external film diffusion to a lesser extent. The temperature rise promotes the molybdate species removal, with the maximum experimental uptake capacity of 4.02 mmol g(-1) at 298 K, at the selected pH which is consistent with the predominance range of hydrolized polynuclear Mo(VI) forms and optimum electrostatic attraction.
PB  - Elsevier, Amsterdam
T2  - Arabian Journal of Chemistry
T1  - Recovery of molybdenum oxyanions using macroporous copolymer grafted with diethylenetriamine
EP  - 3638
IS  - 8
SP  - 3628
VL  - 12
DO  - 10.1016/j.arabjc.2015.11.010
ER  - 

@article{
author = "Ekmeščić, Bojana and Maksin, Danijela and Marković, Jelena P. and Vuković, Zorica M. and Hercigonja, Radmila and Nastasović, Aleksandra and Onjia, Antonije",
year = "2019",
abstract = "The presented study describes macroporous crosslinked poly(glycidyl methacrylateco-ethylene glycol dimethacrylate) [PGME] functionalized with diethylenetriamine [PGME-deta] as a potential recovery agent for Mo(VI) oxyanions from aqueous solutions. Sorption studies were carried out by varying experimental conditions (pH, time, concentration, temperature). Kinetics of Mo(VI) sorption was investigated in batch (static) experiments, in the temperature range 298-343 K. Sorption dynamics data were fitted to seven chemical-reaction and particle-diffusion models. The kinetics studies showed that Mo(VI) sorption adhered to the pseudo-second-order model under all investigated operating conditions. The sorption kinetics was determined to be governed by both the intraparticle diffusion and the external film diffusion to a lesser extent. The temperature rise promotes the molybdate species removal, with the maximum experimental uptake capacity of 4.02 mmol g(-1) at 298 K, at the selected pH which is consistent with the predominance range of hydrolized polynuclear Mo(VI) forms and optimum electrostatic attraction.",
publisher = "Elsevier, Amsterdam",
journal = "Arabian Journal of Chemistry",
title = "Recovery of molybdenum oxyanions using macroporous copolymer grafted with diethylenetriamine",
pages = "3638-3628",
number = "8",
volume = "12",
doi = "10.1016/j.arabjc.2015.11.010"
}

Ekmeščić, B., Maksin, D., Marković, J. P., Vuković, Z. M., Hercigonja, R., Nastasović, A.,& Onjia, A.. (2019). Recovery of molybdenum oxyanions using macroporous copolymer grafted with diethylenetriamine. in Arabian Journal of Chemistry
Elsevier, Amsterdam., 12(8), 3628-3638.
https://doi.org/10.1016/j.arabjc.2015.11.010

Ekmeščić B, Maksin D, Marković JP, Vuković ZM, Hercigonja R, Nastasović A, Onjia A. Recovery of molybdenum oxyanions using macroporous copolymer grafted with diethylenetriamine. in Arabian Journal of Chemistry. 2019;12(8):3628-3638.
doi:10.1016/j.arabjc.2015.11.010 .

Ekmeščić, Bojana, Maksin, Danijela, Marković, Jelena P., Vuković, Zorica M., Hercigonja, Radmila, Nastasović, Aleksandra, Onjia, Antonije, "Recovery of molybdenum oxyanions using macroporous copolymer grafted with diethylenetriamine" in Arabian Journal of Chemistry, 12, no. 8 (2019):3628-3638,
https://doi.org/10.1016/j.arabjc.2015.11.010 . .

TY  - CONF
AU  - Felischak, Matthias
AU  - Nikolić, Daliborka
AU  - Petkovska, Menka
AU  - Hamel, Christof
AU  - Seidel-Morgenstern, Andreas
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4152
AB  - The classical design of continuous chemical reactors exploits steady-state operation, which is optimized and maintained by appropriate control systems. Nevertheless, it is well-known that the reactor performance can be enhanced by applying periodic regimes, like forced modulations of input parameters.The identification and evaluation of suitable periodic operation conditions is challenging. One approach that can be used is based on nonlinear frequency response (NFR) analysis. The focus of this work is the experimental analysis of shapes for two simultaneously imposed modulations (sinusoidal and square) in comparison to results predicted by the NFR method. The acetic anhydride hydrolysis was studied in an adiabatic CSTR exploiting a periodic operation mode, which was found to be superior to the corresponding steady-state operation.
C3  - German reaction Engineering Meeting (DECHEMA), Wuerzburg, Germany
T1  - Forced Periodic Operation: Effect of shapes for two simultaneously imposed modulations
UR  - https://hdl.handle.net/21.15107/rcub_technorep_4152
ER  - 

@conference{
author = "Felischak, Matthias and Nikolić, Daliborka and Petkovska, Menka and Hamel, Christof and Seidel-Morgenstern, Andreas",
year = "2019",
abstract = "The classical design of continuous chemical reactors exploits steady-state operation, which is optimized and maintained by appropriate control systems. Nevertheless, it is well-known that the reactor performance can be enhanced by applying periodic regimes, like forced modulations of input parameters.The identification and evaluation of suitable periodic operation conditions is challenging. One approach that can be used is based on nonlinear frequency response (NFR) analysis. The focus of this work is the experimental analysis of shapes for two simultaneously imposed modulations (sinusoidal and square) in comparison to results predicted by the NFR method. The acetic anhydride hydrolysis was studied in an adiabatic CSTR exploiting a periodic operation mode, which was found to be superior to the corresponding steady-state operation.",
journal = "German reaction Engineering Meeting (DECHEMA), Wuerzburg, Germany",
title = "Forced Periodic Operation: Effect of shapes for two simultaneously imposed modulations",
url = "https://hdl.handle.net/21.15107/rcub_technorep_4152"
}

Felischak, M., Nikolić, D., Petkovska, M., Hamel, C.,& Seidel-Morgenstern, A.. (2019). Forced Periodic Operation: Effect of shapes for two simultaneously imposed modulations. in German reaction Engineering Meeting (DECHEMA), Wuerzburg, Germany.
https://hdl.handle.net/21.15107/rcub_technorep_4152

Felischak M, Nikolić D, Petkovska M, Hamel C, Seidel-Morgenstern A. Forced Periodic Operation: Effect of shapes for two simultaneously imposed modulations. in German reaction Engineering Meeting (DECHEMA), Wuerzburg, Germany. 2019;.
https://hdl.handle.net/21.15107/rcub_technorep_4152 .

Felischak, Matthias, Nikolić, Daliborka, Petkovska, Menka, Hamel, Christof, Seidel-Morgenstern, Andreas, "Forced Periodic Operation: Effect of shapes for two simultaneously imposed modulations" in German reaction Engineering Meeting (DECHEMA), Wuerzburg, Germany (2019),
https://hdl.handle.net/21.15107/rcub_technorep_4152 .

TY  - JOUR
AU  - Liu, Hui
AU  - Lukić, Ivana
AU  - Miladinović, Marija R.
AU  - Veljković, Vlada B.
AU  - Zdujić, Miodrag
AU  - Zhu, Xiaosun
AU  - Zhang, Yanan
AU  - Skala, Dejan
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4016
AB  - The continuous biodiesel production from soybean oil was carried out under the subcritical condition of methanol with MnCO3/Na-silicate as a heterogeneous catalyst. The transesterification rate was first investigated in a set of experiments performed in a batch autoclave at 448 K using methanol-to-oil molar ratio of 18:1 and various catalyst loadings (5, 10 and 20 wt% based on the oil mass). The results from these experiments, as well as the experimental data and the appropriate kinetic model recently reported in the literature were used for designing a packed bed tubular reactor (PBTR), a main unit of the pilot plant with the capacity of 100 L of biodiesel per day. The pilot plant was constructed and tested under various operating conditions. The first 11 h of the pilot-plant operation was realized in the tubular reactor packed with inert glass beads (i.e. without the catalyst) in order to analyze the effect of the non-catalyzed subcritical biodiesel (fatty acid methyl esters, FAME) production. Then, glass beads were replaced with a mix of MnCO3/Na-silicate catalyst particles and glass beads, and the catalytic biodiesel production was continuously run under the subcritical methanol condition for 85 h. Two mass balance tests during the continuous pilot plant operation were performed.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Energy Conversion and Management
T1  - Continuous biodiesel production under subcritical condition of methanol - Design of pilot plant and packed bed reactor with MnCO3/Na-silicate catalyst
EP  - 504
SP  - 494
VL  - 168
DO  - 10.1016/j.enconman.2018.05.028
ER  - 

@article{
author = "Liu, Hui and Lukić, Ivana and Miladinović, Marija R. and Veljković, Vlada B. and Zdujić, Miodrag and Zhu, Xiaosun and Zhang, Yanan and Skala, Dejan",
year = "2018",
abstract = "The continuous biodiesel production from soybean oil was carried out under the subcritical condition of methanol with MnCO3/Na-silicate as a heterogeneous catalyst. The transesterification rate was first investigated in a set of experiments performed in a batch autoclave at 448 K using methanol-to-oil molar ratio of 18:1 and various catalyst loadings (5, 10 and 20 wt% based on the oil mass). The results from these experiments, as well as the experimental data and the appropriate kinetic model recently reported in the literature were used for designing a packed bed tubular reactor (PBTR), a main unit of the pilot plant with the capacity of 100 L of biodiesel per day. The pilot plant was constructed and tested under various operating conditions. The first 11 h of the pilot-plant operation was realized in the tubular reactor packed with inert glass beads (i.e. without the catalyst) in order to analyze the effect of the non-catalyzed subcritical biodiesel (fatty acid methyl esters, FAME) production. Then, glass beads were replaced with a mix of MnCO3/Na-silicate catalyst particles and glass beads, and the catalytic biodiesel production was continuously run under the subcritical methanol condition for 85 h. Two mass balance tests during the continuous pilot plant operation were performed.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Energy Conversion and Management",
title = "Continuous biodiesel production under subcritical condition of methanol - Design of pilot plant and packed bed reactor with MnCO3/Na-silicate catalyst",
pages = "504-494",
volume = "168",
doi = "10.1016/j.enconman.2018.05.028"
}

Liu, H., Lukić, I., Miladinović, M. R., Veljković, V. B., Zdujić, M., Zhu, X., Zhang, Y.,& Skala, D.. (2018). Continuous biodiesel production under subcritical condition of methanol - Design of pilot plant and packed bed reactor with MnCO3/Na-silicate catalyst. in Energy Conversion and Management
Pergamon-Elsevier Science Ltd, Oxford., 168, 494-504.
https://doi.org/10.1016/j.enconman.2018.05.028

Liu H, Lukić I, Miladinović MR, Veljković VB, Zdujić M, Zhu X, Zhang Y, Skala D. Continuous biodiesel production under subcritical condition of methanol - Design of pilot plant and packed bed reactor with MnCO3/Na-silicate catalyst. in Energy Conversion and Management. 2018;168:494-504.
doi:10.1016/j.enconman.2018.05.028 .

Liu, Hui, Lukić, Ivana, Miladinović, Marija R., Veljković, Vlada B., Zdujić, Miodrag, Zhu, Xiaosun, Zhang, Yanan, Skala, Dejan, "Continuous biodiesel production under subcritical condition of methanol - Design of pilot plant and packed bed reactor with MnCO3/Na-silicate catalyst" in Energy Conversion and Management, 168 (2018):494-504,
https://doi.org/10.1016/j.enconman.2018.05.028 . .

TY  - JOUR
AU  - Zhang, Yanan
AU  - Liu, Hui
AU  - Zhu, Xiaochan
AU  - Lukić, Ivana
AU  - Zdujić, Miodrag
AU  - Shen, Xiang
AU  - Skala, Dejan
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4023
AB  - The MnCO3/Na silicate (Mn/Na/Si mole ratio of 4.65:1:1.65) catalyst in the form of solid particles with diameter of 0.99-1.99 mm was used as a catalyst for transesterification of soybean oil in batch autoclave at different conditions: 388-468 K, methanol-to-oil mole ratio 12:1-30:1, catalyst amount based on the mass of oil 0-12.5 %. The complete triacylglycerols (TAG) conversion and high yield of fatty acid methyl ester (FAME) was obtained after 1 h at 458 K, methanol-to-oil mole ratio 30:1 and 10 % of catalyst. Kinetics of transesterification process was analyzed by three models: the simple first order irreversible reaction rate, as well as two more complex models recently reported in literature. The catalyst reuse in transesterification process was tested and the average values of 99.0 % of TAG conversion and 97.5 % of FAME yield were obtained after 8 consecutive runs. Different techniques were used to characterize fresh and used MnCO3/Na silicate catalyst. The determined amounts of leached Na ( lt 500 ppm) and Mn ( lt 20 ppm) in biodiesel phase implied that the homogeneous-heterogeneous process influences the catalyst selectivity, whereby leached Na enables the complete transformation of TAG to FAME.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Biodiesel synthesis and kinetic analysis based on MnCO3/Na silicate as heterogeneous catalyst
EP  - 365
IS  - 3
SP  - 345
VL  - 83
DO  - 10.2298/JSC170612005Z
ER  - 

@article{
author = "Zhang, Yanan and Liu, Hui and Zhu, Xiaochan and Lukić, Ivana and Zdujić, Miodrag and Shen, Xiang and Skala, Dejan",
year = "2018",
abstract = "The MnCO3/Na silicate (Mn/Na/Si mole ratio of 4.65:1:1.65) catalyst in the form of solid particles with diameter of 0.99-1.99 mm was used as a catalyst for transesterification of soybean oil in batch autoclave at different conditions: 388-468 K, methanol-to-oil mole ratio 12:1-30:1, catalyst amount based on the mass of oil 0-12.5 %. The complete triacylglycerols (TAG) conversion and high yield of fatty acid methyl ester (FAME) was obtained after 1 h at 458 K, methanol-to-oil mole ratio 30:1 and 10 % of catalyst. Kinetics of transesterification process was analyzed by three models: the simple first order irreversible reaction rate, as well as two more complex models recently reported in literature. The catalyst reuse in transesterification process was tested and the average values of 99.0 % of TAG conversion and 97.5 % of FAME yield were obtained after 8 consecutive runs. Different techniques were used to characterize fresh and used MnCO3/Na silicate catalyst. The determined amounts of leached Na ( lt 500 ppm) and Mn ( lt 20 ppm) in biodiesel phase implied that the homogeneous-heterogeneous process influences the catalyst selectivity, whereby leached Na enables the complete transformation of TAG to FAME.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Biodiesel synthesis and kinetic analysis based on MnCO3/Na silicate as heterogeneous catalyst",
pages = "365-345",
number = "3",
volume = "83",
doi = "10.2298/JSC170612005Z"
}

Zhang, Y., Liu, H., Zhu, X., Lukić, I., Zdujić, M., Shen, X.,& Skala, D.. (2018). Biodiesel synthesis and kinetic analysis based on MnCO3/Na silicate as heterogeneous catalyst. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 83(3), 345-365.
https://doi.org/10.2298/JSC170612005Z

Zhang Y, Liu H, Zhu X, Lukić I, Zdujić M, Shen X, Skala D. Biodiesel synthesis and kinetic analysis based on MnCO3/Na silicate as heterogeneous catalyst. in Journal of the Serbian Chemical Society. 2018;83(3):345-365.
doi:10.2298/JSC170612005Z .

Zhang, Yanan, Liu, Hui, Zhu, Xiaochan, Lukić, Ivana, Zdujić, Miodrag, Shen, Xiang, Skala, Dejan, "Biodiesel synthesis and kinetic analysis based on MnCO3/Na silicate as heterogeneous catalyst" in Journal of the Serbian Chemical Society, 83, no. 3 (2018):345-365,
https://doi.org/10.2298/JSC170612005Z . .

TY  - JOUR
AU  - Wan, Liang
AU  - Liu, Hui
AU  - Nasreen, Sadia
AU  - Lukić, Ivana
AU  - Skala, Dejan
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4036
AB  - The manganese carbonate catalyst, prepared by precipitation method, was used in transesterification of soybean oil under subcritical condition of methanol. Catalyst samples were characterized by X-ray diffraction (XRD), Fourier trans-form infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS). The triacylglycerol (TAG) conversion and fatty acid methyl esters (FAME) yield were determined using high performance liquid chromatography (HPLC). The transesterification was realized for 1 h using various working conditions: 0-3 wt.% of catalyst (based on the mass of oil), the mole ratio of methanol to oil from 13:1 to 27:1 and temperature ranging from 393 to 473 K. A maximum TAG conversion of 98.1% could be obtained at the optimal reaction conditions: 2 wt.% of catalyst, methanol/oil mole ratio of 21:1, for 1 h in a batch reactor at 453 K. Kinetic analysis showed that the model based on mass transfer and chemical reaction at the catalyst surface confirmed the experimental data. Using that kinetic expression, the effect of continuous transesterification was proposed and verified by a 360-h long realized experiment in a laboratory packed-bed reactor (PBR). Slow deactivation of the catalyst was caused by leaching of Mn in both biodiesel and glycerol phases and by blocking the active sites of the catalyst with organic compounds.
PB  - Savez hemijskih inženjera, Beograd
T2  - Chemical Industry & Chemical Engineering Quarterly
T1  - High temperature transesterification of soybean oil with methanol using manganese carbonate as catalyst
EP  - 22
IS  - 1
SP  - 9
VL  - 24
DO  - 10.2298/CICEQ170221013W
ER  - 

@article{
author = "Wan, Liang and Liu, Hui and Nasreen, Sadia and Lukić, Ivana and Skala, Dejan",
year = "2018",
abstract = "The manganese carbonate catalyst, prepared by precipitation method, was used in transesterification of soybean oil under subcritical condition of methanol. Catalyst samples were characterized by X-ray diffraction (XRD), Fourier trans-form infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS). The triacylglycerol (TAG) conversion and fatty acid methyl esters (FAME) yield were determined using high performance liquid chromatography (HPLC). The transesterification was realized for 1 h using various working conditions: 0-3 wt.% of catalyst (based on the mass of oil), the mole ratio of methanol to oil from 13:1 to 27:1 and temperature ranging from 393 to 473 K. A maximum TAG conversion of 98.1% could be obtained at the optimal reaction conditions: 2 wt.% of catalyst, methanol/oil mole ratio of 21:1, for 1 h in a batch reactor at 453 K. Kinetic analysis showed that the model based on mass transfer and chemical reaction at the catalyst surface confirmed the experimental data. Using that kinetic expression, the effect of continuous transesterification was proposed and verified by a 360-h long realized experiment in a laboratory packed-bed reactor (PBR). Slow deactivation of the catalyst was caused by leaching of Mn in both biodiesel and glycerol phases and by blocking the active sites of the catalyst with organic compounds.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Chemical Industry & Chemical Engineering Quarterly",
title = "High temperature transesterification of soybean oil with methanol using manganese carbonate as catalyst",
pages = "22-9",
number = "1",
volume = "24",
doi = "10.2298/CICEQ170221013W"
}

Wan, L., Liu, H., Nasreen, S., Lukić, I.,& Skala, D.. (2018). High temperature transesterification of soybean oil with methanol using manganese carbonate as catalyst. in Chemical Industry & Chemical Engineering Quarterly
Savez hemijskih inženjera, Beograd., 24(1), 9-22.
https://doi.org/10.2298/CICEQ170221013W

Wan L, Liu H, Nasreen S, Lukić I, Skala D. High temperature transesterification of soybean oil with methanol using manganese carbonate as catalyst. in Chemical Industry & Chemical Engineering Quarterly. 2018;24(1):9-22.
doi:10.2298/CICEQ170221013W .

Wan, Liang, Liu, Hui, Nasreen, Sadia, Lukić, Ivana, Skala, Dejan, "High temperature transesterification of soybean oil with methanol using manganese carbonate as catalyst" in Chemical Industry & Chemical Engineering Quarterly, 24, no. 1 (2018):9-22,
https://doi.org/10.2298/CICEQ170221013W . .

TY  - JOUR
AU  - Maksimović, Svetolik
AU  - Tadić, Vanja
AU  - Ivanović, Jasna
AU  - Radmanović, Tanja
AU  - Milovanović, Stoja
AU  - Stanković, Milica
AU  - Žižović, Irena
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3867
AB  - Supercritical CO2 extraction of Helichrysum italicum and impregnation of starch xerogels with the extract by using an integrated scCO(2) extraction and impregnation process were performed at 350 bar and 40 degrees C in order to produce biomaterials for possible oral intake of the extract. Xerogels produced by air-drying of acetogels and alcogels were used as carriers in the supercritical impregnation process. The effect of ethanol as a co-solvent, contact time, plant material/carrier mass ratio and xerogel preparation on the impregnation loading was studied. The highest impregnation loading (1.261 +/- 0.22%) was achieved after 5 h impregnation of the xerogel obtained from alcogel using pure scCO(2) and plant material/carrier mass ratio of 10. Chemical analysis of the extracts showed that the addition of ethanol as co-solvent had a positive effect on scCO(2) selectivity to terpene fraction and total flavonoids, while it lowered the total phenolic content. Despite the difference in chemical composition, both extracts expressed similar antioxidant activity according to the DPPH and FRAP methods. The integrated process was shown to be a feasible method for isolation and incorporation of bioactive components of H italicum into starch xerogels.
PB  - Savez hemijskih inženjera, Beograd
T2  - Chemical Industry & Chemical Engineering Quarterly
T1  - Utilization of the integrated process of supercritical extraction and impregnation for incorporation of helichrysum italicum extract into corn starch xerogel
EP  - 200
IS  - 2
SP  - 191
VL  - 24
DO  - 10.2298/CICEQ170223031M
ER  - 

@article{
author = "Maksimović, Svetolik and Tadić, Vanja and Ivanović, Jasna and Radmanović, Tanja and Milovanović, Stoja and Stanković, Milica and Žižović, Irena",
year = "2018",
abstract = "Supercritical CO2 extraction of Helichrysum italicum and impregnation of starch xerogels with the extract by using an integrated scCO(2) extraction and impregnation process were performed at 350 bar and 40 degrees C in order to produce biomaterials for possible oral intake of the extract. Xerogels produced by air-drying of acetogels and alcogels were used as carriers in the supercritical impregnation process. The effect of ethanol as a co-solvent, contact time, plant material/carrier mass ratio and xerogel preparation on the impregnation loading was studied. The highest impregnation loading (1.261 +/- 0.22%) was achieved after 5 h impregnation of the xerogel obtained from alcogel using pure scCO(2) and plant material/carrier mass ratio of 10. Chemical analysis of the extracts showed that the addition of ethanol as co-solvent had a positive effect on scCO(2) selectivity to terpene fraction and total flavonoids, while it lowered the total phenolic content. Despite the difference in chemical composition, both extracts expressed similar antioxidant activity according to the DPPH and FRAP methods. The integrated process was shown to be a feasible method for isolation and incorporation of bioactive components of H italicum into starch xerogels.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Chemical Industry & Chemical Engineering Quarterly",
title = "Utilization of the integrated process of supercritical extraction and impregnation for incorporation of helichrysum italicum extract into corn starch xerogel",
pages = "200-191",
number = "2",
volume = "24",
doi = "10.2298/CICEQ170223031M"
}

Maksimović, S., Tadić, V., Ivanović, J., Radmanović, T., Milovanović, S., Stanković, M.,& Žižović, I.. (2018). Utilization of the integrated process of supercritical extraction and impregnation for incorporation of helichrysum italicum extract into corn starch xerogel. in Chemical Industry & Chemical Engineering Quarterly
Savez hemijskih inženjera, Beograd., 24(2), 191-200.
https://doi.org/10.2298/CICEQ170223031M

Maksimović S, Tadić V, Ivanović J, Radmanović T, Milovanović S, Stanković M, Žižović I. Utilization of the integrated process of supercritical extraction and impregnation for incorporation of helichrysum italicum extract into corn starch xerogel. in Chemical Industry & Chemical Engineering Quarterly. 2018;24(2):191-200.
doi:10.2298/CICEQ170223031M .

Maksimović, Svetolik, Tadić, Vanja, Ivanović, Jasna, Radmanović, Tanja, Milovanović, Stoja, Stanković, Milica, Žižović, Irena, "Utilization of the integrated process of supercritical extraction and impregnation for incorporation of helichrysum italicum extract into corn starch xerogel" in Chemical Industry & Chemical Engineering Quarterly, 24, no. 2 (2018):191-200,
https://doi.org/10.2298/CICEQ170223031M . .