TY  - JOUR
AU  - Božilović, Bojana
AU  - Janković, Bojan
AU  - Pijović-Radovanović, Milena
AU  - Waisi, Hadi
AU  - Marinović-Cincović, Milena
AU  - Krstić, Sanja
AU  - Dodevski, Vladimir
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13215
AB  - Thermo-chemical conversion of cigarette butt filters (CBF) waste was investigated using various thermal analysis techniques (simultaneous TG-DTG-DTA and DSC methods) at different heating rates in an inert atmosphere. Thermo- and thermo-physical properties of waste material were discussed, from the point of view of chemical structure and the influence of experimental parameters on the conversion process. It was established that acetyl groups of plasticizer (triacetin) interact with cellulose acetate through dipolar interactions and hydrogen bonding’s. Influence of these polar interactions can affect the position of glass transition temperature, Tg, of CBF. Based on estimated value of Tg from DSC analysis, it was found that cellulose acetate present in CBF has degree of substitution equals to 2.8, where the presence of cellulose triacetate was confirmed. It was assumed that an increase of degree of substitution leads to decline in the crystallinity. A decline of crystal-linity causes the reduction of hydroxyl groups, leading to less organized chains, and whereby decreasing of inter-molecular interactions through hydrogen bond-ing. Based on the examination of thermophysical characteristics of the tested ma-terial, it was found that both, the heat capacity and the thermal inertia of material linearly increase with temperature, during pyrolysis progression. It was concluded that the type of bio-char produced in this process would have a large capacity to store the heat, which may depend on the formed particles size diameter and poros-ity. Furthermore, it was inferred that magnitude drops of thermal conductivity, κ, after Tg depends on the material fibrillation
T2  - Thermal Science
T1  - Thermo-chemical conversion of cigarette butt filters waste through pyrolysis process using thermal analysis techniques
VL  - 28
IS  - 1 Part B
SP  - 513
EP  - 527
DO  - 10.2298/TSCI230520153B
ER  - 

@article{
author = "Božilović, Bojana and Janković, Bojan and Pijović-Radovanović, Milena and Waisi, Hadi and Marinović-Cincović, Milena and Krstić, Sanja and Dodevski, Vladimir",
year = "2024",
abstract = "Thermo-chemical conversion of cigarette butt filters (CBF) waste was investigated using various thermal analysis techniques (simultaneous TG-DTG-DTA and DSC methods) at different heating rates in an inert atmosphere. Thermo- and thermo-physical properties of waste material were discussed, from the point of view of chemical structure and the influence of experimental parameters on the conversion process. It was established that acetyl groups of plasticizer (triacetin) interact with cellulose acetate through dipolar interactions and hydrogen bonding’s. Influence of these polar interactions can affect the position of glass transition temperature, Tg, of CBF. Based on estimated value of Tg from DSC analysis, it was found that cellulose acetate present in CBF has degree of substitution equals to 2.8, where the presence of cellulose triacetate was confirmed. It was assumed that an increase of degree of substitution leads to decline in the crystallinity. A decline of crystal-linity causes the reduction of hydroxyl groups, leading to less organized chains, and whereby decreasing of inter-molecular interactions through hydrogen bond-ing. Based on the examination of thermophysical characteristics of the tested ma-terial, it was found that both, the heat capacity and the thermal inertia of material linearly increase with temperature, during pyrolysis progression. It was concluded that the type of bio-char produced in this process would have a large capacity to store the heat, which may depend on the formed particles size diameter and poros-ity. Furthermore, it was inferred that magnitude drops of thermal conductivity, κ, after Tg depends on the material fibrillation",
journal = "Thermal Science",
title = "Thermo-chemical conversion of cigarette butt filters waste through pyrolysis process using thermal analysis techniques",
volume = "28",
number = "1 Part B",
pages = "513-527",
doi = "10.2298/TSCI230520153B"
}

Božilović, B., Janković, B., Pijović-Radovanović, M., Waisi, H., Marinović-Cincović, M., Krstić, S.,& Dodevski, V.. (2024). Thermo-chemical conversion of cigarette butt filters waste through pyrolysis process using thermal analysis techniques. in Thermal Science, 28(1 Part B), 513-527.
https://doi.org/10.2298/TSCI230520153B

Božilović B, Janković B, Pijović-Radovanović M, Waisi H, Marinović-Cincović M, Krstić S, Dodevski V. Thermo-chemical conversion of cigarette butt filters waste through pyrolysis process using thermal analysis techniques. in Thermal Science. 2024;28(1 Part B):513-527.
doi:10.2298/TSCI230520153B .

Božilović, Bojana, Janković, Bojan, Pijović-Radovanović, Milena, Waisi, Hadi, Marinović-Cincović, Milena, Krstić, Sanja, Dodevski, Vladimir, "Thermo-chemical conversion of cigarette butt filters waste through pyrolysis process using thermal analysis techniques" in Thermal Science, 28, no. 1 Part B (2024):513-527,
https://doi.org/10.2298/TSCI230520153B . .

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Kojić, Marija
AU  - Milošević, Milena
AU  - Rosić, Milena
AU  - Waisi, Hadi
AU  - Božilović, Bojana
AU  - Manić, Nebojša
AU  - Dodevski, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11391
AB  - Thermo-chemical conversion via the pyrolysis of cigarette butt (CB) filters was successfully valorized and upcycled in the pre-carbonization and carbonization stages. The pre-carbonization stage (devolatilization) of the precursor material (cellulose acetate filter, r-CAcF) was analyzed by micro-scale experiments under non-isothermal conditions using TG-DTG-DTA and DSC techniques. The results of a detailed kinetic study showed that the decomposition of r-CAcF takes place via complex mechanisms, including consecutive reaction steps and two single-step reactions. Consecutive stages include the α-transition referred to as a cellulose polymorphic transformation (cellulose I → II) through crystallization mechanism changes, where a more thermodynamically ordered system was obtained. It was found that the transformation rate of cellulose I → II (‘cellulose regeneration’) is strongly affected by the presence of alkali metals and the deacetylation process. Two single-step reactions showed significant overlapping behavior, which involves a nucleation-controlled scission mechanism (producing levoglucosan, gaseous products, and abundant radicals) and hydrolytic decomposition of cellulose by catalytic cleavage of glycosidic bonds with the presence of an acidic catalyst. A macro-scale experiment showed that the operating temperature and heating rate had the most notable effects on the total surface area of the manufactured carbon. A substantial degree of mesoporosity with a median pore radius of 3.1695 nm was identified. The presence of macroporosity on the carbon surface and acidic surface functional groups was observed.
T2  - Polymers
T1  - Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization
VL  - 15
IS  - 14
SP  - 3054
DO  - 10.3390/polym15143054
ER  - 

@article{
author = "Janković, Bojan Ž. and Kojić, Marija and Milošević, Milena and Rosić, Milena and Waisi, Hadi and Božilović, Bojana and Manić, Nebojša and Dodevski, Vladimir",
year = "2023",
abstract = "Thermo-chemical conversion via the pyrolysis of cigarette butt (CB) filters was successfully valorized and upcycled in the pre-carbonization and carbonization stages. The pre-carbonization stage (devolatilization) of the precursor material (cellulose acetate filter, r-CAcF) was analyzed by micro-scale experiments under non-isothermal conditions using TG-DTG-DTA and DSC techniques. The results of a detailed kinetic study showed that the decomposition of r-CAcF takes place via complex mechanisms, including consecutive reaction steps and two single-step reactions. Consecutive stages include the α-transition referred to as a cellulose polymorphic transformation (cellulose I → II) through crystallization mechanism changes, where a more thermodynamically ordered system was obtained. It was found that the transformation rate of cellulose I → II (‘cellulose regeneration’) is strongly affected by the presence of alkali metals and the deacetylation process. Two single-step reactions showed significant overlapping behavior, which involves a nucleation-controlled scission mechanism (producing levoglucosan, gaseous products, and abundant radicals) and hydrolytic decomposition of cellulose by catalytic cleavage of glycosidic bonds with the presence of an acidic catalyst. A macro-scale experiment showed that the operating temperature and heating rate had the most notable effects on the total surface area of the manufactured carbon. A substantial degree of mesoporosity with a median pore radius of 3.1695 nm was identified. The presence of macroporosity on the carbon surface and acidic surface functional groups was observed.",
journal = "Polymers",
title = "Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization",
volume = "15",
number = "14",
pages = "3054",
doi = "10.3390/polym15143054"
}

Janković, B. Ž., Kojić, M., Milošević, M., Rosić, M., Waisi, H., Božilović, B., Manić, N.,& Dodevski, V.. (2023). Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization. in Polymers, 15(14), 3054.
https://doi.org/10.3390/polym15143054

Janković BŽ, Kojić M, Milošević M, Rosić M, Waisi H, Božilović B, Manić N, Dodevski V. Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization. in Polymers. 2023;15(14):3054.
doi:10.3390/polym15143054 .

Janković, Bojan Ž., Kojić, Marija, Milošević, Milena, Rosić, Milena, Waisi, Hadi, Božilović, Bojana, Manić, Nebojša, Dodevski, Vladimir, "Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization" in Polymers, 15, no. 14 (2023):3054,
https://doi.org/10.3390/polym15143054 . .

TY  - JOUR
AU  - Božilović, Bojana
AU  - Nikolić, Bogdan
AU  - Waisi, Hadi
AU  - Trifković, Jelena
AU  - Dodevski, Vladimir
AU  - Janković, Bojan
AU  - Krstić, Sanja
AU  - Mojović, Miloš
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11876
AB  - Brassinosteroids (BRs) are a class of plant hormones that play important roles in regulating various physiological and developmental processes in plants. One of the most effective BRs involved in modulating crop growth is 24-epibrassinolide (24-EBL). The effects of different concentrations of 24-EBL on various biochemical and biophysical parameters critical to early growth stages and seedling development were investigated using two maize hybrids, ‘ZP 434’ (a new-generation hybrid) and ‘ZP 704’ (an older-generation hybrid). The evaluation of results is based on measurements of germination percentage, morphometric parameters, redox status, comparative analysis of thermodynamic parameters (such as Gibbs free energy, enthalpy, entropy), and the concentration of specific sugars in different parts of maize seedlings. The results indicate that the germination and initial growth of maize seedlings are influenced by the flow of crucial sugars from the remaining seed (as a source of nutrients) towards the plumule and radicle (as sink organs). Furthermore, alterations in Gibbs free energy play a significant role in these sugar transfers within the maize seedlings. The seed germination was most affected by the highest concentrations of 24-EBL, showing inhibitory effects, whereas lower and moderate concentrations of exogenously added 24-EBL exhibited a beneficial influence on the initial phases of seedling growth. The mentioned approach gives new insights into source–sink relationships and can be used as a quantitative measure of the germination energy, which until now has been a qualitative criterion in seed science.
T2  - Agronomy
T1  - Influence of 24-Epibrassinolide on the Energetic Parameters and Early Stages of Growth and Development in Seedlings of Two Maize (Zea mays L.) Genotypes
VL  - 13
IS  - 7
SP  - 1673
DO  - 10.3390/agronomy13071673
ER  - 

@article{
author = "Božilović, Bojana and Nikolić, Bogdan and Waisi, Hadi and Trifković, Jelena and Dodevski, Vladimir and Janković, Bojan and Krstić, Sanja and Mojović, Miloš",
year = "2023",
abstract = "Brassinosteroids (BRs) are a class of plant hormones that play important roles in regulating various physiological and developmental processes in plants. One of the most effective BRs involved in modulating crop growth is 24-epibrassinolide (24-EBL). The effects of different concentrations of 24-EBL on various biochemical and biophysical parameters critical to early growth stages and seedling development were investigated using two maize hybrids, ‘ZP 434’ (a new-generation hybrid) and ‘ZP 704’ (an older-generation hybrid). The evaluation of results is based on measurements of germination percentage, morphometric parameters, redox status, comparative analysis of thermodynamic parameters (such as Gibbs free energy, enthalpy, entropy), and the concentration of specific sugars in different parts of maize seedlings. The results indicate that the germination and initial growth of maize seedlings are influenced by the flow of crucial sugars from the remaining seed (as a source of nutrients) towards the plumule and radicle (as sink organs). Furthermore, alterations in Gibbs free energy play a significant role in these sugar transfers within the maize seedlings. The seed germination was most affected by the highest concentrations of 24-EBL, showing inhibitory effects, whereas lower and moderate concentrations of exogenously added 24-EBL exhibited a beneficial influence on the initial phases of seedling growth. The mentioned approach gives new insights into source–sink relationships and can be used as a quantitative measure of the germination energy, which until now has been a qualitative criterion in seed science.",
journal = "Agronomy",
title = "Influence of 24-Epibrassinolide on the Energetic Parameters and Early Stages of Growth and Development in Seedlings of Two Maize (Zea mays L.) Genotypes",
volume = "13",
number = "7",
pages = "1673",
doi = "10.3390/agronomy13071673"
}

Božilović, B., Nikolić, B., Waisi, H., Trifković, J., Dodevski, V., Janković, B., Krstić, S.,& Mojović, M.. (2023). Influence of 24-Epibrassinolide on the Energetic Parameters and Early Stages of Growth and Development in Seedlings of Two Maize (Zea mays L.) Genotypes. in Agronomy, 13(7), 1673.
https://doi.org/10.3390/agronomy13071673

Božilović B, Nikolić B, Waisi H, Trifković J, Dodevski V, Janković B, Krstić S, Mojović M. Influence of 24-Epibrassinolide on the Energetic Parameters and Early Stages of Growth and Development in Seedlings of Two Maize (Zea mays L.) Genotypes. in Agronomy. 2023;13(7):1673.
doi:10.3390/agronomy13071673 .

Božilović, Bojana, Nikolić, Bogdan, Waisi, Hadi, Trifković, Jelena, Dodevski, Vladimir, Janković, Bojan, Krstić, Sanja, Mojović, Miloš, "Influence of 24-Epibrassinolide on the Energetic Parameters and Early Stages of Growth and Development in Seedlings of Two Maize (Zea mays L.) Genotypes" in Agronomy, 13, no. 7 (2023):1673,
https://doi.org/10.3390/agronomy13071673 . .

TY  - CONF
AU  - Waisi, Hadi
AU  - Marinković, Miloš
AU  - Blagojević, Stevan
AU  - Janković, Bojan
AU  - Dodevski, Vladimir
AU  - Prezburger Ulniković, Vladanka
AU  - Božilović, Bojana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12628
AB  - Otpad od cigareta u vidu opuška je jedan od najviše zastupljenih oblika otpada na svetu. U sebi sadrži više od 5000 toksičnih sastojaka i hemikalija koje predstavljaju ozbiljan rizik po zdravlje divljih životinja, ljudi i morskih i slatkovodnih organizama. Svake godine se širom sveta proizvedu milijarde cigareta, što rezultira akumulacijom više tona toksičnog otpada. U zavisnosti od uslova okoline i vremenskih prilika, celuloznim acetatnim filterima može biti potrebno i do 10 godina da se u potpunosti razgrade i za to vreme u okolinu konstantno ispuštaju teške metale i toksične hemikalije. Iako moguće metode odlaganja sakupljenih opušaka od cigareta uključuju spaljivanje i odlaganje na deponije, tehnike mogu rezultirati ispuštanjem opasnih isparenja i mogu biti skupe. Obrada i recikliranje opušaka i njihova konverzija u različite materijale bi mogli biti potencijalno rešenje za nastalo zagađivanje životne sredine. Do objavljivanja ovog pregleda postoji nekoliko studija i radova o reciklaži opušaka sa ohrabrujućim rezultatima i u određenom broju istih su proučavane metode, uključujući recikliranje opušaka u asfaltnom betonu i pečenoj cigli, kao izvor ugljenika, materijal koji apsorbuje zvuk, inhibitor korozije, nosač biofilma i mnogi drugi.
AB  - Cigarette waste in the form of cigarette butts is one of the most common forms of waste in the world. It contains more than 5,000 toxic ingredients and chemicals that pose a serious risk to the health of wildlife, humans and marine and freshwater organisms. Billions of cigarettes are produced worldwide every year, resulting in the accumulation of tons of toxic waste. Depending on the environmental conditions and weather conditions, cellulose acetate filters can take up to 10 years to completely decompose, during which time heavy metals and toxic chemicals are constantly released into the environment. Although possible methods of disposing of collected cigarette butts include incineration and landfilling, techniques can result in the release of hazardous fumes and can be expensive. Treatment and recycling of cigarette butts and their conversion into different materials could be a potential solution to the resulting environmental pollution. Until the publication of this review, there are several studies and papers on cigarette recycling with encouraging results and a number of them have been studied methods, including recycling cigarette butts in asphalt concrete and baked brick, as a carbon source, sound-absorbing material, corrosion inhibitor, biofilm carrier and many others.
PB  - Beograd : Univerzitet “Union-Nikola Tesla
C3  - Društvena, tehnička i ekološka održivost savremenog sveta : Zbornik radova Univerziteta “Union-Nikola Tesla” Beograd
T1  - Otpad od cigareta i mogućnosti njegove reciklaže
T1  - Cigarette waste and its recyclability
IS  - 2
SP  - 29
EP  - 40
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12628
ER  - 

@conference{
author = "Waisi, Hadi and Marinković, Miloš and Blagojević, Stevan and Janković, Bojan and Dodevski, Vladimir and Prezburger Ulniković, Vladanka and Božilović, Bojana",
year = "2021",
abstract = "Otpad od cigareta u vidu opuška je jedan od najviše zastupljenih oblika otpada na svetu. U sebi sadrži više od 5000 toksičnih sastojaka i hemikalija koje predstavljaju ozbiljan rizik po zdravlje divljih životinja, ljudi i morskih i slatkovodnih organizama. Svake godine se širom sveta proizvedu milijarde cigareta, što rezultira akumulacijom više tona toksičnog otpada. U zavisnosti od uslova okoline i vremenskih prilika, celuloznim acetatnim filterima može biti potrebno i do 10 godina da se u potpunosti razgrade i za to vreme u okolinu konstantno ispuštaju teške metale i toksične hemikalije. Iako moguće metode odlaganja sakupljenih opušaka od cigareta uključuju spaljivanje i odlaganje na deponije, tehnike mogu rezultirati ispuštanjem opasnih isparenja i mogu biti skupe. Obrada i recikliranje opušaka i njihova konverzija u različite materijale bi mogli biti potencijalno rešenje za nastalo zagađivanje životne sredine. Do objavljivanja ovog pregleda postoji nekoliko studija i radova o reciklaži opušaka sa ohrabrujućim rezultatima i u određenom broju istih su proučavane metode, uključujući recikliranje opušaka u asfaltnom betonu i pečenoj cigli, kao izvor ugljenika, materijal koji apsorbuje zvuk, inhibitor korozije, nosač biofilma i mnogi drugi., Cigarette waste in the form of cigarette butts is one of the most common forms of waste in the world. It contains more than 5,000 toxic ingredients and chemicals that pose a serious risk to the health of wildlife, humans and marine and freshwater organisms. Billions of cigarettes are produced worldwide every year, resulting in the accumulation of tons of toxic waste. Depending on the environmental conditions and weather conditions, cellulose acetate filters can take up to 10 years to completely decompose, during which time heavy metals and toxic chemicals are constantly released into the environment. Although possible methods of disposing of collected cigarette butts include incineration and landfilling, techniques can result in the release of hazardous fumes and can be expensive. Treatment and recycling of cigarette butts and their conversion into different materials could be a potential solution to the resulting environmental pollution. Until the publication of this review, there are several studies and papers on cigarette recycling with encouraging results and a number of them have been studied methods, including recycling cigarette butts in asphalt concrete and baked brick, as a carbon source, sound-absorbing material, corrosion inhibitor, biofilm carrier and many others.",
publisher = "Beograd : Univerzitet “Union-Nikola Tesla",
journal = "Društvena, tehnička i ekološka održivost savremenog sveta : Zbornik radova Univerziteta “Union-Nikola Tesla” Beograd",
title = "Otpad od cigareta i mogućnosti njegove reciklaže, Cigarette waste and its recyclability",
number = "2",
pages = "29-40",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12628"
}

Waisi, H., Marinković, M., Blagojević, S., Janković, B., Dodevski, V., Prezburger Ulniković, V.,& Božilović, B.. (2021). Otpad od cigareta i mogućnosti njegove reciklaže. in Društvena, tehnička i ekološka održivost savremenog sveta : Zbornik radova Univerziteta “Union-Nikola Tesla” Beograd
Beograd : Univerzitet “Union-Nikola Tesla.(2), 29-40.
https://hdl.handle.net/21.15107/rcub_vinar_12628

Waisi H, Marinković M, Blagojević S, Janković B, Dodevski V, Prezburger Ulniković V, Božilović B. Otpad od cigareta i mogućnosti njegove reciklaže. in Društvena, tehnička i ekološka održivost savremenog sveta : Zbornik radova Univerziteta “Union-Nikola Tesla” Beograd. 2021;(2):29-40.
https://hdl.handle.net/21.15107/rcub_vinar_12628 .

Waisi, Hadi, Marinković, Miloš, Blagojević, Stevan, Janković, Bojan, Dodevski, Vladimir, Prezburger Ulniković, Vladanka, Božilović, Bojana, "Otpad od cigareta i mogućnosti njegove reciklaže" in Društvena, tehnička i ekološka održivost savremenog sveta : Zbornik radova Univerziteta “Union-Nikola Tesla” Beograd, no. 2 (2021):29-40,
https://hdl.handle.net/21.15107/rcub_vinar_12628 .