生命周期评估
碳纤维
废物管理
碳中和
环境科学
吸附
过程(计算)
活性炭
塑料废料
可再生能源
材料科学
工艺工程
计算机科学
工程类
化学
复合材料
生产(经济)
复合数
有机化学
电气工程
经济
宏观经济学
操作系统
作者
Qi Zhang,Shuai Deng,Hui Yang,Anming Wang,Junyao Wang,Xiaorong Lai,Peng Sun,Ruikai Zhao
标识
DOI:10.1016/j.jiec.2023.10.014
摘要
Integrated with carbon capture and utilization (CCU), the waste plastic upcycling is a promising solution for mitigating environmental issues associated with CO2 emissions and plastic waste. However, there still exists a knowledge gap on how to assess reasonably the coupling environmental performance. In this paper, a 'waste plastics - upcycling plastics' system integrated with CCU is proposed through a three-step process: activated carbon is produced from waste PET plastics, CO2 is captured using PET-AC as the adsorbent, and upcycling plastics are synthesized through CO2 utilization. The life cycle assessment and carbon neutrality analysis are employed to evaluate the environmental performance of proposed system. Our findings show that the CO2 utilization process contributes the most to the system's global warming potential (GWP), accounting for approximately 68% of the total impact. By selecting renewable energy sources in the CO2 capture process and extending the capture time, the degree of carbon neutrality (DCN) could be increased from 0.985 to 1.235 and 0.991, respectively. The GWP and DCN are also influenced by the yield of activated carbon and the type of upcycling plastics.
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