TY - JOUR
T1 - Revealing the synergistic effect of feedstock compositions and process parameters in co-pyrolysis: A review based on bibliometric analysis and experimental studies
AU - Ayub, Yousaf
AU - Ren, Jingzheng
N1 - Funding Information:
The work described in this paper was supported by the Research Committee of The Hong Kong Polytechnic University under student account code RHWR. It was also supported by a grant from the Research Grants Council of the Hong Kong Special Administrative Region, China-General Research Fund (Project ID: P0037749, Funding Body Ref. No: 15303921, Project No. Q88R), a grant from Research Institute for Advanced Manufacturing (RIAM), The Hong Kong Polytechnic University (1-CD9G, Project ID: P0046135), and a grant from the PROCORE-France/Hong Kong Joint Research Scheme sponsored by the Research Grants Council of Hong Kong and the Consulate General of France in Hong Kong (Ref. No. F-PolyU501/22).
Publisher Copyright:
© 2024 Elsevier Ltd
PY - 2024/6/25
Y1 - 2024/6/25
N2 - Waste considers as a liability, but its potential as an asset can be achieved through proper valorization. This study analyzed one of the valorization process, ‘co-pyrolysis,’ using insights from the bibliometric analysis and experimental literature sources. The analysis primarily focuses on understanding the impact of process parameters, catalysts, and feedstock characteristics. The empirical findings highlight the significance of polymer-to-biomass ratios in feedstock, where a higher plastic content leads to increased oil production, while greater biomass ratios tend to enhance char generation. The effect of temperature and resident time on co-pyrolysis yield is also apparent. Specifically, high temperature and resident time result in better oil production and reduced char formation during co-pyrolysis. Optimal oil yield occurs with intermediate resident times of 50–100 min with higher temperatures ranging from 450 to 700 °C. While the prime conditions for optimal char yield ranges within a residence time of 30–60 min and temperatures 400–500 °C. Moreover, the introduction of catalysts into the reaction enhances both oil yield and quality within the co-pyrolysis process. However, challenges pertaining to feedstock availability and sorting remain significant hurdles. Hence, the outcome reveals that higher amount of plastic waste, with higher temperature and appropriate resident time can increase the amount of oil in the co-pyrolysis process.
AB - Waste considers as a liability, but its potential as an asset can be achieved through proper valorization. This study analyzed one of the valorization process, ‘co-pyrolysis,’ using insights from the bibliometric analysis and experimental literature sources. The analysis primarily focuses on understanding the impact of process parameters, catalysts, and feedstock characteristics. The empirical findings highlight the significance of polymer-to-biomass ratios in feedstock, where a higher plastic content leads to increased oil production, while greater biomass ratios tend to enhance char generation. The effect of temperature and resident time on co-pyrolysis yield is also apparent. Specifically, high temperature and resident time result in better oil production and reduced char formation during co-pyrolysis. Optimal oil yield occurs with intermediate resident times of 50–100 min with higher temperatures ranging from 450 to 700 °C. While the prime conditions for optimal char yield ranges within a residence time of 30–60 min and temperatures 400–500 °C. Moreover, the introduction of catalysts into the reaction enhances both oil yield and quality within the co-pyrolysis process. However, challenges pertaining to feedstock availability and sorting remain significant hurdles. Hence, the outcome reveals that higher amount of plastic waste, with higher temperature and appropriate resident time can increase the amount of oil in the co-pyrolysis process.
KW - Bibliometric analysis
KW - Carbon neutrality
KW - Co-pyrolysis process
KW - Feedstocks synergy
KW - Optimized parameters
KW - Plastic waste
UR - http://www.scopus.com/inward/record.url?scp=85193060783&partnerID=8YFLogxK
U2 - 10.1016/j.jclepro.2024.142540
DO - 10.1016/j.jclepro.2024.142540
M3 - Review article
AN - SCOPUS:85193060783
SN - 0959-6526
VL - 459
JO - Journal of Cleaner Production
JF - Journal of Cleaner Production
M1 - 142540
ER -