TY  - JOUR
AU  - Lopičić, Zorica
AU  - Antanasković, Anja
AU  - Šoštarić, Tatjana
AU  - Adamović, Vladimir
AU  - Orlić, Marina
AU  - Milojković, Jelena
AU  - Milivojević, Milan
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6606
AB  - Peach stones, a valuable agro-industrial by-product available in many countries worldwide, comprise a renewable resource, which can be widely applied for multifunctional purposes. Its important advantages such as high-energy value, low ash content, low price and wide abundance, make peach stones an ideal fuel for energy production, but also for new materials synthesis. Although peach stones exhibit adequate combustion properties, allowing their direct use with minimal physical/chemical treatment, they often need further modification in order to improve their thermal properties, where slow pyrolysis is frequently used. This study aims to provide a practical and effective solution to the revalorization of waste biomass originating from the fruit processing industry, through slow pyrolysis in order to convert this waste into carbonaceous material - biochar. The thermo-chemical conversion of raw biomass resulted in a stable material with excellent fuel properties, with higher mass energy density and grinding ability, providing biochar with properties, in energy sense, similar or even better than a coal. Biochar has a higher fixed carbon content and a higher energy potential than biomass itself, and its application as a biofuel might reduce emissions of greenhouse gases, as it reduces the amount of waste landed and increases the share of energy generated from renewable sources.
AB  - Koštice breskve, otpadna biomasa poreklom iz industrije prerade voća, dostupna u mnogim zemljama širom sveta, predstavlja obnovljivi resurs koji može imati različitu primenu. Prednosti koje se ogledaju u velikom energetskom potencijalu, malom sadržaju pepela, niskoj ceni i širokoj rasprostranjenosti, čine koštice breskve idealnim resursom za proizvodnju energije, ali i za sintezu novih materijala. Iako koštice breskve imaju svojstva koja im omogućavaju da se koriste uz minimalni fizičkio-hemijski tretman, često im je potrebna dodatna modifikacija kako bi se poboljšala njihova svojstva. Jedan on načina poboljšanja energetskih karakteristika otpadne biomase predstavlja termohemijska konverzija materijala u vidu spore pirolize. Ispitivanja prikazana u ovom radu obavljena su sa ciljem obezbeđivanja praktičnog i efikasnog rešenje za revalorizaciju otpadne biomase koja potiče iz industrije prerade voća, putem spore pirolize kojom se vrši konverzija ovog otpada u ugljenični materijal – biočađ. Prikazani rezultati ukazuju na glavna svojstva dobijene biočađi u funkciji njene primene kao čvrstog goriva, istovremeno ih upoređujući sa svojstvima sirove biomase. Termohemijska konverzija polazne lignocelulozne biomase daje stabilni ugljenični material odličnih gorivih karakteristika, veće energetske gustine i boljih mehaničkih svojstava, što rezultuje energetskim svojstvima koja su bolja od uglja. Biočađ poseduje znatno veći energetski potencijal od same biomase, i njegova primena kao biogoriva može redukovati emisiju gasova sa efektom staklene baste, pri čemu se istovremeno smanjuje količina deponovanog otpada ali i povećava udeo energije generisane iz obnovljivih izvora.
PB  - Association of the Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Improvement of energy properties of lignocellulosic waste by thermochemical conversion into biochar
T1  - Poboljšanje energetskih svojstava lignoceluloznog otpada termohemijskom konverzijom u biočađ
EP  - 153
IS  - 2
SP  - 147
VL  - 77
DO  - 10.2298/HEMIND221222013L
ER  - 

@article{
author = "Lopičić, Zorica and Antanasković, Anja and Šoštarić, Tatjana and Adamović, Vladimir and Orlić, Marina and Milojković, Jelena and Milivojević, Milan",
year = "2023",
abstract = "Peach stones, a valuable agro-industrial by-product available in many countries worldwide, comprise a renewable resource, which can be widely applied for multifunctional purposes. Its important advantages such as high-energy value, low ash content, low price and wide abundance, make peach stones an ideal fuel for energy production, but also for new materials synthesis. Although peach stones exhibit adequate combustion properties, allowing their direct use with minimal physical/chemical treatment, they often need further modification in order to improve their thermal properties, where slow pyrolysis is frequently used. This study aims to provide a practical and effective solution to the revalorization of waste biomass originating from the fruit processing industry, through slow pyrolysis in order to convert this waste into carbonaceous material - biochar. The thermo-chemical conversion of raw biomass resulted in a stable material with excellent fuel properties, with higher mass energy density and grinding ability, providing biochar with properties, in energy sense, similar or even better than a coal. Biochar has a higher fixed carbon content and a higher energy potential than biomass itself, and its application as a biofuel might reduce emissions of greenhouse gases, as it reduces the amount of waste landed and increases the share of energy generated from renewable sources., Koštice breskve, otpadna biomasa poreklom iz industrije prerade voća, dostupna u mnogim zemljama širom sveta, predstavlja obnovljivi resurs koji može imati različitu primenu. Prednosti koje se ogledaju u velikom energetskom potencijalu, malom sadržaju pepela, niskoj ceni i širokoj rasprostranjenosti, čine koštice breskve idealnim resursom za proizvodnju energije, ali i za sintezu novih materijala. Iako koštice breskve imaju svojstva koja im omogućavaju da se koriste uz minimalni fizičkio-hemijski tretman, često im je potrebna dodatna modifikacija kako bi se poboljšala njihova svojstva. Jedan on načina poboljšanja energetskih karakteristika otpadne biomase predstavlja termohemijska konverzija materijala u vidu spore pirolize. Ispitivanja prikazana u ovom radu obavljena su sa ciljem obezbeđivanja praktičnog i efikasnog rešenje za revalorizaciju otpadne biomase koja potiče iz industrije prerade voća, putem spore pirolize kojom se vrši konverzija ovog otpada u ugljenični materijal – biočađ. Prikazani rezultati ukazuju na glavna svojstva dobijene biočađi u funkciji njene primene kao čvrstog goriva, istovremeno ih upoređujući sa svojstvima sirove biomase. Termohemijska konverzija polazne lignocelulozne biomase daje stabilni ugljenični material odličnih gorivih karakteristika, veće energetske gustine i boljih mehaničkih svojstava, što rezultuje energetskim svojstvima koja su bolja od uglja. Biočađ poseduje znatno veći energetski potencijal od same biomase, i njegova primena kao biogoriva može redukovati emisiju gasova sa efektom staklene baste, pri čemu se istovremeno smanjuje količina deponovanog otpada ali i povećava udeo energije generisane iz obnovljivih izvora.",
publisher = "Association of the Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Improvement of energy properties of lignocellulosic waste by thermochemical conversion into biochar, Poboljšanje energetskih svojstava lignoceluloznog otpada termohemijskom konverzijom u biočađ",
pages = "153-147",
number = "2",
volume = "77",
doi = "10.2298/HEMIND221222013L"
}

Lopičić, Z., Antanasković, A., Šoštarić, T., Adamović, V., Orlić, M., Milojković, J.,& Milivojević, M.. (2023). Improvement of energy properties of lignocellulosic waste by thermochemical conversion into biochar. in Hemijska industrija
Association of the Chemical Engineers of Serbia., 77(2), 147-153.
https://doi.org/10.2298/HEMIND221222013L

Lopičić Z, Antanasković A, Šoštarić T, Adamović V, Orlić M, Milojković J, Milivojević M. Improvement of energy properties of lignocellulosic waste by thermochemical conversion into biochar. in Hemijska industrija. 2023;77(2):147-153.
doi:10.2298/HEMIND221222013L .

Lopičić, Zorica, Antanasković, Anja, Šoštarić, Tatjana, Adamović, Vladimir, Orlić, Marina, Milojković, Jelena, Milivojević, Milan, "Improvement of energy properties of lignocellulosic waste by thermochemical conversion into biochar" in Hemijska industrija, 77, no. 2 (2023):147-153,
https://doi.org/10.2298/HEMIND221222013L . .

TY  - CONF
AU  - Milojković, Natalija
AU  - Orlić, Marina
AU  - Dikić, Jelena
AU  - Zunic, Milan
AU  - Simović, Bojana
AU  - Dapčević, Aleksandra
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6478
AB  - Regarding enormous expansion of bacterial contamination as well as their increase resistivity to commonly used disinfectants, there is a great demand for antibacterial material, which will not be based on organic compounds. Among various inorganic substances, environmentally friendly, low-cost and chemically stable ZnO and TiO2 demonstrate considerable antibacterial activity.This work primarily focuses on idea of developing novel disinfectant based on both, ZnO and TiO2, which would integrate all the worthy properties of both oxides. For that matter, titanium(IV) butoxide was dissolved in a solution of zinc acetate following with the ammonia addition until pH value was 8.5. Half of the initial solution was hydrothermally treated, dried and calcined at 500 (H-ZnTi-500) and 800°C (H-ZnTi-800). Two other samples (ZnTi-500 and ZnTi-800) were obtained from the other half of the initial solution which was directly dried and calcined under the same conditions. The samples were characterized by XRD including Rietveld refinement, FESEMand TG/DTA. Antibacterial activity was examined towards Gram-positive S. aureus and Gram-negative E. coli .The results showed that only ZnTi-800 consisted of pure Zn2TiO4 (Fd-3m) while Zn TiO was the major phase in three other samples. In the case of samples calcined at 500 °C, traces of ZnO were found. H-ZnTi-800 contained three phases: Zn2TiO4, ZnO and Zn2Ti3O8 (P4332). Cubic Zn2TiO4 contains two cation sites: tetrahedrally coordinated Zn at 0,0,0 and octahedral site at 5/8,5/8,5/8 shared between Zn and Ti. The calculated a-parameters of all obtained Zn2TiO4 as well as Zn–O and Zn/Ti–O bond distances were independent of synthesis. At 500 °C nanocrystalline Zn2TiO4 were obtained with the crystallite sizes 26 and 71 nm for H-ZnTi-500 and ZnTi-500, respectively, while microcrystalline phases were obtained at 800 °C with the crystallite sizes larger than 110 nm. The soft agglomerates consisted of smaller particles were obtained at 500 °C comparing to samples at 800 °C having more compact agglomerates.The best antibacterial activity with high reduction in the number of bacteria cells (87.6 % of E. coli and 63.4 % of S. aureus) was exhibited by the ZnTi-500. It means that the purity of samples, crystallite size and softness of agglomerates, influence antibacterial activity and that optimal level of all factors should be reached since ZnTi-500 was almost pure with sufficiently small crystallites and soft agglomerates.
PB  - European Powder Diffraction Conference (17 ; 2022 ; Šibenik)
C3  - European Powder Diffraction Conference -ЕPDIC17, Šibenik, Croatia, Book of Abstracts
T1  - A novel disinfectant based on zinc orthotitanate
SP  - 206
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_1969
ER  - 

@conference{
author = "Milojković, Natalija and Orlić, Marina and Dikić, Jelena and Zunic, Milan and Simović, Bojana and Dapčević, Aleksandra",
year = "2022",
abstract = "Regarding enormous expansion of bacterial contamination as well as their increase resistivity to commonly used disinfectants, there is a great demand for antibacterial material, which will not be based on organic compounds. Among various inorganic substances, environmentally friendly, low-cost and chemically stable ZnO and TiO2 demonstrate considerable antibacterial activity.This work primarily focuses on idea of developing novel disinfectant based on both, ZnO and TiO2, which would integrate all the worthy properties of both oxides. For that matter, titanium(IV) butoxide was dissolved in a solution of zinc acetate following with the ammonia addition until pH value was 8.5. Half of the initial solution was hydrothermally treated, dried and calcined at 500 (H-ZnTi-500) and 800°C (H-ZnTi-800). Two other samples (ZnTi-500 and ZnTi-800) were obtained from the other half of the initial solution which was directly dried and calcined under the same conditions. The samples were characterized by XRD including Rietveld refinement, FESEMand TG/DTA. Antibacterial activity was examined towards Gram-positive S. aureus and Gram-negative E. coli .The results showed that only ZnTi-800 consisted of pure Zn2TiO4 (Fd-3m) while Zn TiO was the major phase in three other samples. In the case of samples calcined at 500 °C, traces of ZnO were found. H-ZnTi-800 contained three phases: Zn2TiO4, ZnO and Zn2Ti3O8 (P4332). Cubic Zn2TiO4 contains two cation sites: tetrahedrally coordinated Zn at 0,0,0 and octahedral site at 5/8,5/8,5/8 shared between Zn and Ti. The calculated a-parameters of all obtained Zn2TiO4 as well as Zn–O and Zn/Ti–O bond distances were independent of synthesis. At 500 °C nanocrystalline Zn2TiO4 were obtained with the crystallite sizes 26 and 71 nm for H-ZnTi-500 and ZnTi-500, respectively, while microcrystalline phases were obtained at 800 °C with the crystallite sizes larger than 110 nm. The soft agglomerates consisted of smaller particles were obtained at 500 °C comparing to samples at 800 °C having more compact agglomerates.The best antibacterial activity with high reduction in the number of bacteria cells (87.6 % of E. coli and 63.4 % of S. aureus) was exhibited by the ZnTi-500. It means that the purity of samples, crystallite size and softness of agglomerates, influence antibacterial activity and that optimal level of all factors should be reached since ZnTi-500 was almost pure with sufficiently small crystallites and soft agglomerates.",
publisher = "European Powder Diffraction Conference (17 ; 2022 ; Šibenik)",
journal = "European Powder Diffraction Conference -ЕPDIC17, Šibenik, Croatia, Book of Abstracts",
title = "A novel disinfectant based on zinc orthotitanate",
pages = "206",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_1969"
}

Milojković, N., Orlić, M., Dikić, J., Zunic, M., Simović, B.,& Dapčević, A.. (2022). A novel disinfectant based on zinc orthotitanate. in European Powder Diffraction Conference -ЕPDIC17, Šibenik, Croatia, Book of Abstracts
European Powder Diffraction Conference (17 ; 2022 ; Šibenik)., 206.
https://hdl.handle.net/21.15107/rcub_rimsi_1969

Milojković N, Orlić M, Dikić J, Zunic M, Simović B, Dapčević A. A novel disinfectant based on zinc orthotitanate. in European Powder Diffraction Conference -ЕPDIC17, Šibenik, Croatia, Book of Abstracts. 2022;:206.
https://hdl.handle.net/21.15107/rcub_rimsi_1969 .

Milojković, Natalija, Orlić, Marina, Dikić, Jelena, Zunic, Milan, Simović, Bojana, Dapčević, Aleksandra, "A novel disinfectant based on zinc orthotitanate" in European Powder Diffraction Conference -ЕPDIC17, Šibenik, Croatia, Book of Abstracts (2022):206,
https://hdl.handle.net/21.15107/rcub_rimsi_1969 .