Co-circularity of spent coffee grounds and polyethylene via co-pyrolysis: Characteristics, kinetics, and products

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dc.authorid0000-0003-1099-4363en_US
dc.contributor.authorFu, Jiawei
dc.contributor.authorWu, Xijian
dc.contributor.authorLiu, Jingyong
dc.contributor.authorEvrendilek, Fatih
dc.contributor.authorChen, Tao
dc.contributor.authorXie, Wuming
dc.contributor.authorXu, Weijie
dc.contributor.authorHe, Yao
dc.date.accessioned2023-07-28T12:50:22Z
dc.date.available2023-07-28T12:50:22Z
dc.date.issued2023en_US
dc.departmentBAİBÜ, Mühendislik Fakültesi, Çevre Mühendisliği Bölümüen_US
dc.descriptionThis research was financially supported by the National Natural Science Foundation of China (No. 51978175 & 42177196) , the Scientificand Technological Planning Project of Guangzhou, China (No. 202103000004) , Guangdong Province Science and Technology Plan-ning Project, China (NO.2022A0505050076) and Natural Science Foundation of Guangdong Province, China (No. 2022A1515010825 & 2019A1515012131) . We would like to thank Miss. Yang at the Analysis and Test Center of Guangdong University of Technology for her assis-tance with TG-FTIR analysis.en_US
dc.description.abstractSpent coffee grounds (CG) and polyethylene (PE) are the two typical types of major solid wastes. Their co-pyrolysis may be leveraged to reduce their waste streams and pollution and valorize energy and by-products. In this study, their co-pyrolysis performances, interaction effects, kinetics, and products were characterized in response to the varying temperature and blend ratio. The co-pyrolysis exhibited the two main stages of (1) the degradation of CG (180-380 degrees C) and (2) the depolymerization of PE and the decomposition of lignin (380-550 degrees C). The pyrolysis performance rose from 1.34x10(-4)%(3)center dot min(-2)center dot degrees C-3 with the mono-pyrolysis of CG to 26.32x10(-4)%(3)center dot min(-2)center dot degrees C-3 with the co-pyrolysis of 10 % CG and 90 % PE. The co-pyrolysis of 70 % CG and 30 % PE (CP73) achieved a lower activation energy than did the mono-pyrolysis of the two fuels. The products of the CG pyrolysis included a large number of alcohols, ethers, ketones, esters, and other oxygen-containing compounds, with a proportion as high as 65.01 %. The products of CP73 at 550 degrees C resulted in the yields of hydrocarbons and alcohols up to 93.61 %, beneficial to the further utilization of the co-pyrolytic products. Not only did the co-pyrolysis valorize its products, but also it enhanced their co-circularity. Artificial neural network-based joint optimization showed CP73 in the range of 517-1000 degrees C as the best combination of the conditions. The study provides new insights into the co-pyrolytic disposal of spent coffee grounds and polyethylene so as to improve the waste stream reduction and the valorization of energy and products.en_US
dc.description.sponsorshipNational Natural Science Foundation of China [51978175, 42177196]; Scientificand Technological Planning Project of Guangzhou, China [202103000004]; Guangdong Province Science and Technology Plan-ning Project, China [2022A0505050076]; Natural Science Foundation of Guangdong Province, China [2022A1515010825, 2019A1515012131]; Yang at the Analysis and Test Center of Guangdong University of Technologyen_US
dc.identifier.citationFu, J., Wu, X., Liu, J., Evrendilek, F., Chen, T., Xie, W., ... & He, Y. (2023). Co-circularity of spent coffee grounds and polyethylene via co-pyrolysis: characteristics, kinetics, and products. Fuel, 337, 127061.en_US
dc.identifier.doi10.1016/j.fuel.2022.127061
dc.identifier.endpage17en_US
dc.identifier.issn0016-2361
dc.identifier.issn1873-7153
dc.identifier.scopus2-s2.0-85144846292en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.fuel.2022.127061
dc.identifier.urihttps://hdl.handle.net/20.500.12491/11397
dc.identifier.volume337en_US
dc.identifier.wosWOS:000913275600001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorEvrendilek, Fatih
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofFuelen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCoffee Groundsen_US
dc.subjectPolyethyleneen_US
dc.subjectCo-pyrolysisen_US
dc.subjectPy-GC/MSen_US
dc.subjectDynamic Optimizationen_US
dc.titleCo-circularity of spent coffee grounds and polyethylene via co-pyrolysis: Characteristics, kinetics, and productsen_US
dc.typeArticleen_US

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