TY  - CONF
AU  - Đukić-Vuković, Aleksandra
AU  - Grbić, Jovana
AU  - Mladenović, Dragana
AU  - Pavlović, Stefan
AU  - Lazović, Saša
AU  - Mojović, Ljiljana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7400
AB  - We combined cold plasma treatment (CPT) with water, ethanol, Fenton and hydrogen peroxide media under acidic and basic conditions for treatment of corn stalks as significant lignocellulose agri-industrial waste. Chemical properties of treated samples were analyzed by FTIR and mercury porosimetry, acetyl bromide soluble lignin content was determined by spectrophotometric methods, while carbohydrate 
fractions were subjected to enzymatic hydrolysis followed by spectrophotometric analysis to assess its potential for fermentations. Lignin fraction which is often neglected (Ponnusamy et al., 2019) was also examined as a source of antioxidants.
PB  - National Technical University of Athens
C3  - 10th International Conference on Sustainable Solid Waste Management, Chania2023, 21-24 June, Chania, Greece
T1  - Corn stalks as a lignocellulose substrate for biorefinery applications
UR  - https://hdl.handle.net/21.15107/rcub_cer_7400
ER  - 

@conference{
author = "Đukić-Vuković, Aleksandra and Grbić, Jovana and Mladenović, Dragana and Pavlović, Stefan and Lazović, Saša and Mojović, Ljiljana",
year = "2023",
abstract = "We combined cold plasma treatment (CPT) with water, ethanol, Fenton and hydrogen peroxide media under acidic and basic conditions for treatment of corn stalks as significant lignocellulose agri-industrial waste. Chemical properties of treated samples were analyzed by FTIR and mercury porosimetry, acetyl bromide soluble lignin content was determined by spectrophotometric methods, while carbohydrate 
fractions were subjected to enzymatic hydrolysis followed by spectrophotometric analysis to assess its potential for fermentations. Lignin fraction which is often neglected (Ponnusamy et al., 2019) was also examined as a source of antioxidants.",
publisher = "National Technical University of Athens",
journal = "10th International Conference on Sustainable Solid Waste Management, Chania2023, 21-24 June, Chania, Greece",
title = "Corn stalks as a lignocellulose substrate for biorefinery applications",
url = "https://hdl.handle.net/21.15107/rcub_cer_7400"
}

Đukić-Vuković, A., Grbić, J., Mladenović, D., Pavlović, S., Lazović, S.,& Mojović, L.. (2023). Corn stalks as a lignocellulose substrate for biorefinery applications. in 10th International Conference on Sustainable Solid Waste Management, Chania2023, 21-24 June, Chania, Greece
National Technical University of Athens..
https://hdl.handle.net/21.15107/rcub_cer_7400

Đukić-Vuković A, Grbić J, Mladenović D, Pavlović S, Lazović S, Mojović L. Corn stalks as a lignocellulose substrate for biorefinery applications. in 10th International Conference on Sustainable Solid Waste Management, Chania2023, 21-24 June, Chania, Greece. 2023;.
https://hdl.handle.net/21.15107/rcub_cer_7400 .

Đukić-Vuković, Aleksandra, Grbić, Jovana, Mladenović, Dragana, Pavlović, Stefan, Lazović, Saša, Mojović, Ljiljana, "Corn stalks as a lignocellulose substrate for biorefinery applications" in 10th International Conference on Sustainable Solid Waste Management, Chania2023, 21-24 June, Chania, Greece (2023),
https://hdl.handle.net/21.15107/rcub_cer_7400 .

TY  - JOUR
AU  - Grbić, Jovana
AU  - Mladenović, Dragana
AU  - Pavlović, Stefan
AU  - Lazović, Saša
AU  - Mojović, Ljiljana
AU  - Đukić-Vuković, Aleksandra
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5650
AB  - The depletion of fossil fuel reserves and severe environmental damage, resulting in climate change and global warming lead to a necessary shift to alternative renewable resources. Lignocellulose is a valuable feedstock for biorefineries, but its conversion is hindered by the limitations of conventional pretreatments lacking selectivity. This step should also be cost-effective and sustainable. In this paper, combined advanced oxidation techniques were applied for the treatment of corn stalks as a pretreatment for enzymatic hydrolysis. Their effect on delignification and cellulose digestibility was monitored. The combined non-thermal plasma/Fenton treatment appears to be suitable for breaking the complex lignocellulose structure, with a lignin content decrease of 39%. This treatment enhanced carbohydrate hydrolysis, resulting in 2.25 times increase in hexose yield, compared to the untreated sample. Long-term plasma treatment positively affected the textural properties, total porosity, and pore size diameter, of lignocellulose biomass. It enables the creation of materials with a stable system of pores and channels, for the unhindered diffusion of large organic molecules such as enzymes. Additionally, a combination of plasma treatment with Fenton reaction increased selectivity towards lignin degradation in comparison to independently applied Fenton treatment. This could be a significant advantage for a bottleneck in the current valorization of biomass.
PB  - Elsevier B.V.
T2  - Sustainable Chemistry and Pharmacy
T1  - Advanced oxidation processes in the treatment of corn stalks
VL  - 32
SP  - 100962
DO  - 10.1016/j.scp.2022.100962
ER  - 

@article{
author = "Grbić, Jovana and Mladenović, Dragana and Pavlović, Stefan and Lazović, Saša and Mojović, Ljiljana and Đukić-Vuković, Aleksandra",
year = "2023",
abstract = "The depletion of fossil fuel reserves and severe environmental damage, resulting in climate change and global warming lead to a necessary shift to alternative renewable resources. Lignocellulose is a valuable feedstock for biorefineries, but its conversion is hindered by the limitations of conventional pretreatments lacking selectivity. This step should also be cost-effective and sustainable. In this paper, combined advanced oxidation techniques were applied for the treatment of corn stalks as a pretreatment for enzymatic hydrolysis. Their effect on delignification and cellulose digestibility was monitored. The combined non-thermal plasma/Fenton treatment appears to be suitable for breaking the complex lignocellulose structure, with a lignin content decrease of 39%. This treatment enhanced carbohydrate hydrolysis, resulting in 2.25 times increase in hexose yield, compared to the untreated sample. Long-term plasma treatment positively affected the textural properties, total porosity, and pore size diameter, of lignocellulose biomass. It enables the creation of materials with a stable system of pores and channels, for the unhindered diffusion of large organic molecules such as enzymes. Additionally, a combination of plasma treatment with Fenton reaction increased selectivity towards lignin degradation in comparison to independently applied Fenton treatment. This could be a significant advantage for a bottleneck in the current valorization of biomass.",
publisher = "Elsevier B.V.",
journal = "Sustainable Chemistry and Pharmacy",
title = "Advanced oxidation processes in the treatment of corn stalks",
volume = "32",
pages = "100962",
doi = "10.1016/j.scp.2022.100962"
}

Grbić, J., Mladenović, D., Pavlović, S., Lazović, S., Mojović, L.,& Đukić-Vuković, A.. (2023). Advanced oxidation processes in the treatment of corn stalks. in Sustainable Chemistry and Pharmacy
Elsevier B.V.., 32, 100962.
https://doi.org/10.1016/j.scp.2022.100962

Grbić J, Mladenović D, Pavlović S, Lazović S, Mojović L, Đukić-Vuković A. Advanced oxidation processes in the treatment of corn stalks. in Sustainable Chemistry and Pharmacy. 2023;32:100962.
doi:10.1016/j.scp.2022.100962 .

Grbić, Jovana, Mladenović, Dragana, Pavlović, Stefan, Lazović, Saša, Mojović, Ljiljana, Đukić-Vuković, Aleksandra, "Advanced oxidation processes in the treatment of corn stalks" in Sustainable Chemistry and Pharmacy, 32 (2023):100962,
https://doi.org/10.1016/j.scp.2022.100962 . .

TY  - CONF
AU  - Pavlović, Stefan
AU  - Marinković, Dalibor
AU  - Milovanović, Biljana
AU  - Tišma, Marina
AU  - Mojović, Ljiljana
AU  - Stanković, Miroslav
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4721
AB  - Waste-based zeolite supported CaO catalyst (20CaO/ZMFA) was synthesized by ultrasound-assisted impregnation from alcoholic suspension. Zeolite was previously synthesized from lignite coal fly ash (FA) by alkali activation in miniature rotating autoclave reactors (6.25 M NaOH, 260 °C, 4 h), whereas CaO was prepared by chicken eggshell (ES) calcination (900 ºC, 4 h). The final catalyst was obtained by precursor calcination at 550 °C, 4 h. The obtained catalyst was used for catalyst stability tests (reusability and leaching) in transesterification (methanol/oil molar ratio of 12/1, catalyst concentration of 4 wt%, and temperature of 60 °C) of three types of oily feedstocks, fresh sunflower oil (SFO), waste cooking oil (WCO) and model thermal treated (230 °C, 5 days) sunflower oil (SFOTT). The concentration of triacylglycerols (TAGs) and fatty acid methyl esters (FAMEs) was determined by GC and HPLC, respectively. The 20CaO/ZMFA exhibited high activity (FAME content > 96.5 % for 180 min) in the transesterification of all three oily feedstocks. The stability tests are shown that catalyst is stable even in four reaction cycles for SFO and WCO, whereas the Ca 2+ leaching was significantly lower compared to similar catalytic systems.
PB  - Fuel Science Center
C3  - 9th International Conference Fuel Science - From Production to Propulsion 2021
T1  - Stability of waste-based zeolite supported CaO catalyst for biodiesel production from waste oily feedstocks
UR  - https://hdl.handle.net/21.15107/rcub_cer_4721
ER  - 

@conference{
author = "Pavlović, Stefan and Marinković, Dalibor and Milovanović, Biljana and Tišma, Marina and Mojović, Ljiljana and Stanković, Miroslav",
year = "2021",
abstract = "Waste-based zeolite supported CaO catalyst (20CaO/ZMFA) was synthesized by ultrasound-assisted impregnation from alcoholic suspension. Zeolite was previously synthesized from lignite coal fly ash (FA) by alkali activation in miniature rotating autoclave reactors (6.25 M NaOH, 260 °C, 4 h), whereas CaO was prepared by chicken eggshell (ES) calcination (900 ºC, 4 h). The final catalyst was obtained by precursor calcination at 550 °C, 4 h. The obtained catalyst was used for catalyst stability tests (reusability and leaching) in transesterification (methanol/oil molar ratio of 12/1, catalyst concentration of 4 wt%, and temperature of 60 °C) of three types of oily feedstocks, fresh sunflower oil (SFO), waste cooking oil (WCO) and model thermal treated (230 °C, 5 days) sunflower oil (SFOTT). The concentration of triacylglycerols (TAGs) and fatty acid methyl esters (FAMEs) was determined by GC and HPLC, respectively. The 20CaO/ZMFA exhibited high activity (FAME content > 96.5 % for 180 min) in the transesterification of all three oily feedstocks. The stability tests are shown that catalyst is stable even in four reaction cycles for SFO and WCO, whereas the Ca 2+ leaching was significantly lower compared to similar catalytic systems.",
publisher = "Fuel Science Center",
journal = "9th International Conference Fuel Science - From Production to Propulsion 2021",
title = "Stability of waste-based zeolite supported CaO catalyst for biodiesel production from waste oily feedstocks",
url = "https://hdl.handle.net/21.15107/rcub_cer_4721"
}

Pavlović, S., Marinković, D., Milovanović, B., Tišma, M., Mojović, L.,& Stanković, M.. (2021). Stability of waste-based zeolite supported CaO catalyst for biodiesel production from waste oily feedstocks. in 9th International Conference Fuel Science - From Production to Propulsion 2021
Fuel Science Center..
https://hdl.handle.net/21.15107/rcub_cer_4721

Pavlović S, Marinković D, Milovanović B, Tišma M, Mojović L, Stanković M. Stability of waste-based zeolite supported CaO catalyst for biodiesel production from waste oily feedstocks. in 9th International Conference Fuel Science - From Production to Propulsion 2021. 2021;.
https://hdl.handle.net/21.15107/rcub_cer_4721 .

Pavlović, Stefan, Marinković, Dalibor, Milovanović, Biljana, Tišma, Marina, Mojović, Ljiljana, Stanković, Miroslav, "Stability of waste-based zeolite supported CaO catalyst for biodiesel production from waste oily feedstocks" in 9th International Conference Fuel Science - From Production to Propulsion 2021 (2021),
https://hdl.handle.net/21.15107/rcub_cer_4721 .

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  - https://cer.ihtm.bg.ac.rs/handle/123456789/4035
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
VL  - 289
SP  - 119912
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",
volume = "289",
pages = "119912",
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  - Pavlović, Stefan
AU  - Marinković, Dalibor
AU  - Kostić, Milan
AU  - Janković-Častvan, Ivona
AU  - Mojović, Ljiljana
AU  - Stanković, Miroslav
AU  - Veljković, Vlada B.
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3423
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 gismondine
and the crystallographic modification of calcium silicate (α’-dicalcium silicate) with deposited CaO.
The characteristics of the synthesized catalyst were determined using ED-XRF, XRD, FT-IR, SEM, Hg-porosimetry,
N2-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 °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 (R2 > 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
T2  - Fuel
T1  - A CaO/zeolite-based catalyst obtained from waste chicken eggshell and coal fly ash for biodiesel production
VL  - 267
SP  - 117171
DO  - 10.1016/j.fuel.2020.117171
ER  - 

@article{
author = "Pavlović, Stefan and Marinković, Dalibor and Kostić, Milan 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 gismondine
and the crystallographic modification of calcium silicate (α’-dicalcium silicate) with deposited CaO.
The characteristics of the synthesized catalyst were determined using ED-XRF, XRD, FT-IR, SEM, Hg-porosimetry,
N2-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 °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 (R2 > 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",
journal = "Fuel",
title = "A CaO/zeolite-based catalyst obtained from waste chicken eggshell and coal fly ash for biodiesel production",
volume = "267",
pages = "117171",
doi = "10.1016/j.fuel.2020.117171"
}

Pavlović, S., Marinković, D., Kostić, M., 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., 267, 117171.
https://doi.org/10.1016/j.fuel.2020.117171

Pavlović S, Marinković D, Kostić M, 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;267:117171.
doi:10.1016/j.fuel.2020.117171 .

Pavlović, Stefan, Marinković, Dalibor, Kostić, Milan, 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):117171,
https://doi.org/10.1016/j.fuel.2020.117171 . .

TY  - JOUR
AU  - Mladenović, Dragana
AU  - Djukić‐Vuković, Aleksandra
AU  - Stanković, Miroslav
AU  - Milašinović‐Šeremešić, Marija
AU  - Radosavljević, Milica
AU  - Pejin, Jelena
AU  - Mojović, Ljiljana
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3064
AB  - BACKGROUND: Growing challenges of resource depletion, food security and environmental protection are putting stress on the development of biorefinery processes for bioprocessing of residues fromfood and agro-industry into value-added products. In this study, the simultaneous production of lactic acid (LA) and livestock feed on a combined substrate based on molasses and potato stillage by Lactobacillus paracasei NRRL B-4564 immobilized onto sunflower seed hull (SSH), brewer’s spent grain (BSG) and sugar beet pulp (SBP) was studied. RESULTS: The highest total LA concentration of 399 g L−1 with overall productivity of 1.27 g L−1 h−1 was achieved in repeated batch fermentation by SBP-immobilized biocatalyst, followed by BSG- and SSH-immobilized cells. Fermentation improved the content of proteins and ash, and decreased the content of fibers in all three support materials. In addition, the fermentation had favorable effect on in vitro drymatter digestibility and energy values of SSH and BSG. According to assessment of probiotic potential, L. paracasei demonstrated a favorable probiotic profile, exhibiting high resistance to simulated ruminant digestive tract and significant antioxidant and antimicrobial activity. CONCLUSIONS: The proposed strategy enables valorization of agro-industrial residues as value-added ruminant feed and simultaneous LA production. Following principles of circular economy, the developed process combines different rawmaterials and integrates them into a biorefinery process, improving the overall profitability and productivity.
PB  - Wiley
T2  - Journal of the Science of Food and Agriculture
T1  - Bioprocessing of agro‐industrial residues into lactic acid and probiotic enriched livestock feed
VL  - 99
IS  - 12
SP  - 5293
EP  - 5302
DO  - 10.1002/jsfa.9759
ER  - 

@article{
author = "Mladenović, Dragana and Djukić‐Vuković, Aleksandra and Stanković, Miroslav and Milašinović‐Šeremešić, Marija and Radosavljević, Milica and Pejin, Jelena and Mojović, Ljiljana",
year = "2019",
abstract = "BACKGROUND: Growing challenges of resource depletion, food security and environmental protection are putting stress on the development of biorefinery processes for bioprocessing of residues fromfood and agro-industry into value-added products. In this study, the simultaneous production of lactic acid (LA) and livestock feed on a combined substrate based on molasses and potato stillage by Lactobacillus paracasei NRRL B-4564 immobilized onto sunflower seed hull (SSH), brewer’s spent grain (BSG) and sugar beet pulp (SBP) was studied. RESULTS: The highest total LA concentration of 399 g L−1 with overall productivity of 1.27 g L−1 h−1 was achieved in repeated batch fermentation by SBP-immobilized biocatalyst, followed by BSG- and SSH-immobilized cells. Fermentation improved the content of proteins and ash, and decreased the content of fibers in all three support materials. In addition, the fermentation had favorable effect on in vitro drymatter digestibility and energy values of SSH and BSG. According to assessment of probiotic potential, L. paracasei demonstrated a favorable probiotic profile, exhibiting high resistance to simulated ruminant digestive tract and significant antioxidant and antimicrobial activity. CONCLUSIONS: The proposed strategy enables valorization of agro-industrial residues as value-added ruminant feed and simultaneous LA production. Following principles of circular economy, the developed process combines different rawmaterials and integrates them into a biorefinery process, improving the overall profitability and productivity.",
publisher = "Wiley",
journal = "Journal of the Science of Food and Agriculture",
title = "Bioprocessing of agro‐industrial residues into lactic acid and probiotic enriched livestock feed",
volume = "99",
number = "12",
pages = "5293-5302",
doi = "10.1002/jsfa.9759"
}

Mladenović, D., Djukić‐Vuković, A., Stanković, M., Milašinović‐Šeremešić, M., Radosavljević, M., Pejin, J.,& Mojović, L.. (2019). Bioprocessing of agro‐industrial residues into lactic acid and probiotic enriched livestock feed. in Journal of the Science of Food and Agriculture
Wiley., 99(12), 5293-5302.
https://doi.org/10.1002/jsfa.9759

Mladenović D, Djukić‐Vuković A, Stanković M, Milašinović‐Šeremešić M, Radosavljević M, Pejin J, Mojović L. Bioprocessing of agro‐industrial residues into lactic acid and probiotic enriched livestock feed. in Journal of the Science of Food and Agriculture. 2019;99(12):5293-5302.
doi:10.1002/jsfa.9759 .

Mladenović, Dragana, Djukić‐Vuković, Aleksandra, Stanković, Miroslav, Milašinović‐Šeremešić, Marija, Radosavljević, Milica, Pejin, Jelena, Mojović, Ljiljana, "Bioprocessing of agro‐industrial residues into lactic acid and probiotic enriched livestock feed" in Journal of the Science of Food and Agriculture, 99, no. 12 (2019):5293-5302,
https://doi.org/10.1002/jsfa.9759 . .

TY  - CONF
AU  - Paunović, Anđela
AU  - Pavlović, Stefan
AU  - Marinković, Dalibor
AU  - Mojović, Ljiljana
PY  - 2019
UR  - http://www.kmhem.net/aec_events/sedma-konferencija-mladih-hemicara-srbije/
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3748
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
SP  - 101
EP  - 101
UR  - https://hdl.handle.net/21.15107/rcub_cer_3748
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_cer_3748"
}

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_cer_3748

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_cer_3748 .

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_cer_3748 .

TY  - CONF
AU  - Paunović, Anđela
AU  - Pavlović, Stefan
AU  - Marinković, Dalibor
AU  - Mojović, Ljiljana
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3778
AB  - Poster presented at Seventh Conference of the Young Chemists of Serbia, 2nd November 2019
T1  - Biodiesel synthesis over green catalyst: The effect of thermal treatment of CaO/Zeolite precursor on catalytic activity
UR  - https://hdl.handle.net/21.15107/rcub_cer_3778
ER  - 

@conference{
author = "Paunović, Anđela and Pavlović, Stefan and Marinković, Dalibor and Mojović, Ljiljana",
year = "2019",
abstract = "Poster presented at Seventh Conference of the Young Chemists of Serbia, 2nd November 2019",
title = "Biodiesel synthesis over green catalyst: The effect of thermal treatment of CaO/Zeolite precursor on catalytic activity",
url = "https://hdl.handle.net/21.15107/rcub_cer_3778"
}

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. .
https://hdl.handle.net/21.15107/rcub_cer_3778

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. 2019;.
https://hdl.handle.net/21.15107/rcub_cer_3778 .

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" (2019),
https://hdl.handle.net/21.15107/rcub_cer_3778 .