Exploring the factors influencing the co-pyrolysis of walnut shells, pistachio shells, and polypropylene based on thermal behavior, kinetics and reaction mechanism
The complex co-pyrolysis process of biomass with polypropylene (PP) and the limited research on microscopic reaction mechanisms have hindered its advance application in mitigating environmental issues and addressing the supply-demand imbalance of fossil fuels. In this study, walnut shells (WS) and p...
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| Language: | English |
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Elsevier
2025-01-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X24017106 |
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| author | Zhigang Huang Tong Zhang Chen Wang Wenbo Xiao Zihan Wang Obid Tursunov Jiahui Wu Yuguang Zhou Xiaolong Yao Gang Li |
| author_facet | Zhigang Huang Tong Zhang Chen Wang Wenbo Xiao Zihan Wang Obid Tursunov Jiahui Wu Yuguang Zhou Xiaolong Yao Gang Li |
| author_sort | Zhigang Huang |
| collection | DOAJ |
| description | The complex co-pyrolysis process of biomass with polypropylene (PP) and the limited research on microscopic reaction mechanisms have hindered its advance application in mitigating environmental issues and addressing the supply-demand imbalance of fossil fuels. In this study, walnut shells (WS) and pistachio shells (PS) were chosen as representative biomass materials to systematically investigate their co-pyrolysis characteristics with PP. Model-free isoconversional methods such as Flynn-Wall-Ozawa, Kissinger-Akahira-Sunose, Starink and Vyazovkin, were employed to analyze pyrolysis kinetics. The results demonstrate that the synergistic effect between PS and PP significantly decreased the activation energy of the reaction system (460.64–112.80 kJ/mol). Product analysis showed that the feedstock ratio and pyrolysis temperature had a significant effect on the composition of the product. The experimental findings indicated that at 600 °C with a PS:PP ratio of 1:2, the activation energy was minimized while the total content of phenols and hydrocarbons reached its highest level (75.42 %). By integrating thermogravimetric, kinetic, and product analyzes, this study establishes a comprehensive characterization system for understanding pyrolysis processes at multiple scale levels, providing a novel approach for optimizing pyrolysis conditions while providing theoretical guidance for designing efficient and selective pyrolysis processes. |
| format | Article |
| id | doaj-art-7ffffd172bd7485784cf31584df34153 |
| institution | DOAJ |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-7ffffd172bd7485784cf31584df341532025-08-20T02:44:46ZengElsevierCase Studies in Thermal Engineering2214-157X2025-01-016510567910.1016/j.csite.2024.105679Exploring the factors influencing the co-pyrolysis of walnut shells, pistachio shells, and polypropylene based on thermal behavior, kinetics and reaction mechanismZhigang Huang0Tong Zhang1Chen Wang2Wenbo Xiao3Zihan Wang4Obid Tursunov5Jiahui Wu6Yuguang Zhou7Xiaolong Yao8Gang Li9School of Computer and Artificial Intelligence, Beijing Technology and Business University, Beijing, 100048, ChinaSchool of Computer and Artificial Intelligence, Beijing Technology and Business University, Beijing, 100048, ChinaSchool of Computer and Artificial Intelligence, Beijing Technology and Business University, Beijing, 100048, ChinaSchool of Computer and Artificial Intelligence, Beijing Technology and Business University, Beijing, 100048, ChinaSchool of Computer and Artificial Intelligence, Beijing Technology and Business University, Beijing, 100048, ChinaBioenergy and Environment Science & Technology Laboratory, College of Engineering, China Agricultural University, Beijing, 100083, China; Department of Power Supply and Renewable Energy Sources, National Research University TIIAME, Tashkent, 100000, UzbekistanSchool of Computer and Artificial Intelligence, Beijing Technology and Business University, Beijing, 100048, ChinaBioenergy and Environment Science & Technology Laboratory, College of Engineering, China Agricultural University, Beijing, 100083, ChinaSchool of Light Industry Science and Engineering, Beijing Technology and Business University, Beijing, 100048, China; Corresponding author.School of Computer and Artificial Intelligence, Beijing Technology and Business University, Beijing, 100048, China; Corresponding author.The complex co-pyrolysis process of biomass with polypropylene (PP) and the limited research on microscopic reaction mechanisms have hindered its advance application in mitigating environmental issues and addressing the supply-demand imbalance of fossil fuels. In this study, walnut shells (WS) and pistachio shells (PS) were chosen as representative biomass materials to systematically investigate their co-pyrolysis characteristics with PP. Model-free isoconversional methods such as Flynn-Wall-Ozawa, Kissinger-Akahira-Sunose, Starink and Vyazovkin, were employed to analyze pyrolysis kinetics. The results demonstrate that the synergistic effect between PS and PP significantly decreased the activation energy of the reaction system (460.64–112.80 kJ/mol). Product analysis showed that the feedstock ratio and pyrolysis temperature had a significant effect on the composition of the product. The experimental findings indicated that at 600 °C with a PS:PP ratio of 1:2, the activation energy was minimized while the total content of phenols and hydrocarbons reached its highest level (75.42 %). By integrating thermogravimetric, kinetic, and product analyzes, this study establishes a comprehensive characterization system for understanding pyrolysis processes at multiple scale levels, providing a novel approach for optimizing pyrolysis conditions while providing theoretical guidance for designing efficient and selective pyrolysis processes.http://www.sciencedirect.com/science/article/pii/S2214157X24017106Co-pyrolysisBiomassPolypropyleneKinetic modelSynergistic effectSynergistic mechanism |
| spellingShingle | Zhigang Huang Tong Zhang Chen Wang Wenbo Xiao Zihan Wang Obid Tursunov Jiahui Wu Yuguang Zhou Xiaolong Yao Gang Li Exploring the factors influencing the co-pyrolysis of walnut shells, pistachio shells, and polypropylene based on thermal behavior, kinetics and reaction mechanism Case Studies in Thermal Engineering Co-pyrolysis Biomass Polypropylene Kinetic model Synergistic effect Synergistic mechanism |
| title | Exploring the factors influencing the co-pyrolysis of walnut shells, pistachio shells, and polypropylene based on thermal behavior, kinetics and reaction mechanism |
| title_full | Exploring the factors influencing the co-pyrolysis of walnut shells, pistachio shells, and polypropylene based on thermal behavior, kinetics and reaction mechanism |
| title_fullStr | Exploring the factors influencing the co-pyrolysis of walnut shells, pistachio shells, and polypropylene based on thermal behavior, kinetics and reaction mechanism |
| title_full_unstemmed | Exploring the factors influencing the co-pyrolysis of walnut shells, pistachio shells, and polypropylene based on thermal behavior, kinetics and reaction mechanism |
| title_short | Exploring the factors influencing the co-pyrolysis of walnut shells, pistachio shells, and polypropylene based on thermal behavior, kinetics and reaction mechanism |
| title_sort | exploring the factors influencing the co pyrolysis of walnut shells pistachio shells and polypropylene based on thermal behavior kinetics and reaction mechanism |
| topic | Co-pyrolysis Biomass Polypropylene Kinetic model Synergistic effect Synergistic mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X24017106 |
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