Coke Formation and Zeolite Catalyst Effects on Products from Co-pyrolysis of Waste Tyre and Poplar Wood in a Semi-Batch Reactor under N2 Atmosphere Milad Hoseini, Farid Atashi, Mortaza Gholizadeh, Frederic Clarens Energy Technology, 2024 Herein, it is aimed to investigate the effect of zeolite catalyst on the co‐pyrolysis process of waste tyre and poplar wood. A laboratory‐sized reactor is used to pyrolyze 15 g of sample at 500 °C under atmospheric pressure. In the results, it is indicated that co‐pyrolysis affects the properties of the products. Comparing to single feedstock, the co‐pyrolysis enhances the yields of bio‐oil, while reducing the formation of char. The pyrolysis of poplar wood produces 23.3 wt% of bio‐oil, while the pyrolysis of tyre yields 25 wt% of bio‐oil. However, it is 31.29 wt% for the co‐pyrolysis process. Higher content of valuable compounds are formed in the bio‐oil, which improve the fuel properties of the bio‐oil. The zeolite catalyst alters the characteristics of the products obtained from the co‐pyrolysis process. The gaseous products show a decrease in the concentrations of carbon monoxide and carbon dioxide when the catalyst is present. The liquid product analysis reveals the presence of light aromatics such as ethyl benzene and light linear compounds such as alkanes including octane, hexane, etc. The analysis of the catalysts suggests that a very small amount of coke deposits on the catalyst due to the slight increase in carbon content.
Pyrolysis of bottle-grade polyethylene terephthalate: Effect of carrier gases on carriage of pyrolysis products Farid Atashi, Mortaza Gholizadeh, Farshad Ataei Polymer Engineering and Science, 2022 The production of widely‐used bottle‐grade polyethylene terephthalate (PET) is now considered an environmental problem on a global scale. The urgent need for renewable energy reveals the necessity of employing thermochemical recycling methods. The use of a carrier gas is among the parameters affecting the pyrolysis process, for it is responsible for carrying pyrolysis products to separate condensable products. In this study, PET granules were pyrolyzed at 500°C with three carrier gases: N2, He, and Ar. According to the results, using a gas with lower molecular weights increased the production of gaseous products (30.94%). However, using a gas with higher molecular weights led to the production of further char (20.2%) associated with the increased reforming reaction rate and hydrogen production in the gaseous phase. The presence of different carrier gases changed tar composition and aromatics; therefore, the highest acid benzoic level was detected in the nitrogen atmosphere. Evaluating the thermal stability of wax and char indicated that the weight loss of char was larger in nitrogen (44.8 wt%) than in the other two carrier gases. However, there were further heavy oxygenated components in wax under the helium and nitrogen atmospheres. Those components degraded more difficultly.
Catalytic pyrolysis of polyethylene terephthalate over zeolite catalyst: Characteristics of coke and the products Chao Li, Farshad Ataei, Farid Atashi, Xun Hu, Mortaza Gholizadeh International Journal of Energy Research, 2021 Polyethylene terephthalate (PET) is highly used in the packaging industry, which triggered the pile‐up of a huge amount of waste in the environment. Catalytic pyrolysis can convert PET waste into fuel in solid, liquid, and gaseous products. In this study, the catalytic pyrolysis of PET granules in the presence of zeolite (A4 type) was studied. The results indicated that zeolite could remarkably influence the yields, properties, and compositions of the products by affecting the secondary and primary reactions. The yields of H2 and light hydrocarbons increased in the gaseous product due to the higher rate of dehydrogenation and cracking reactions catalyzed by the zeolite catalyst. In addition, the zeolite catalyst could crack down wax and char, increasing the yields of gas and tar while simultaneously reducing the yield of acids and aromatics inside the tar. The obtained char from the catalytic pyrolysis was more aliphatic and less aromatic, but the formation of the graphite‐type structure was enhanced. The coke, containing oxygen‐rich aliphatic species and aromatics, deposited on the catalyst, blocked pores, and significantly reduced the activity of the catalyst. In addition, the contents of metals increased on the surface of the zeolite catalyst due to the migration of inorganics from PET.
RECENT SCHOLAR PUBLICATIONS
Coke Formation and Zeolite Catalyst Effects on Products from Co‐pyrolysis of Waste Tyre and Poplar Wood in a Semi‐Batch Reactor under N 2 Atmosphere M Hoseini, F Atashi, M Gholizadeh, F Clarens Energy Technology 12 (4), 2300740 , 2024 2024 Citations: 10
Pyrolysis analysis of polyethylene terephthalate: effects of carrier gases (N 2 , He, and Ar) and zeolite catalyst (A 4 ) on yield F Atashi, M Gholizadeh, F Ataei Journal of Chemical Technology & Biotechnology 97 (12), 3395-3405 , 2022 2022 Citations: 15
Investigating the catalytic pyrolysis of polyethylene terephthalate in the presence of zeolite catalyst to convert it into liquid fuel F Atashi, A Niaei, M Gholizadeh Nashrieh Shimi va Mohandesi Shimi Iran 41 (3), 231-241 , 2022 2022 Citations: 1
Pyrolysis of bottle-grade polyethylene terephthalate: Effect of carrier gases on carriage of pyrolysis products F Atashi, M Gholizadeh, F Ataei Polymer Engineering and Science 62 (5) , 2022 2022 Citations: 11
Catalytic pyrolysis of polyethylene terephthalate over zeolite catalyst: Characteristics of coke and the products C Li, F Ataei, F Atashi, X Hu, M Gholizadeh International Journal of Energy Research 45 (13), 19028-19042 , 2021 2021 Citations: 50
MOST CITED SCHOLAR PUBLICATIONS
Catalytic pyrolysis of polyethylene terephthalate over zeolite catalyst: Characteristics of coke and the products C Li, F Ataei, F Atashi, X Hu, M Gholizadeh International Journal of Energy Research 45 (13), 19028-19042 , 2021 2021 Citations: 50
Pyrolysis analysis of polyethylene terephthalate: effects of carrier gases (N 2 , He, and Ar) and zeolite catalyst (A 4 ) on yield F Atashi, M Gholizadeh, F Ataei Journal of Chemical Technology & Biotechnology 97 (12), 3395-3405 , 2022 2022 Citations: 15
Pyrolysis of bottle-grade polyethylene terephthalate: Effect of carrier gases on carriage of pyrolysis products F Atashi, M Gholizadeh, F Ataei Polymer Engineering and Science 62 (5) , 2022 2022 Citations: 11
Coke Formation and Zeolite Catalyst Effects on Products from Co‐pyrolysis of Waste Tyre and Poplar Wood in a Semi‐Batch Reactor under N 2 Atmosphere M Hoseini, F Atashi, M Gholizadeh, F Clarens Energy Technology 12 (4), 2300740 , 2024 2024 Citations: 10
Investigating the catalytic pyrolysis of polyethylene terephthalate in the presence of zeolite catalyst to convert it into liquid fuel F Atashi, A Niaei, M Gholizadeh Nashrieh Shimi va Mohandesi Shimi Iran 41 (3), 231-241 , 2022 2022 Citations: 1
