聚烯烃
物流分析
温室气体
供应链
生命周期评估
能源消耗
生物塑料
环境科学
废物管理
消费(社会学)
生产(经济)
自然资源经济学
材料科学
业务
工程类
经济
纳米技术
宏观经济学
社会学
营销
电气工程
生物
社会科学
图层(电子)
生态学
作者
Utkarsh S. Chaudhari,Anne Johnson,Barbara K. Reck,Robert M. Handler,Vicki S. Thompson,Damon Hartley,Wendy B. Young,David Watkins,David R. Shonnard
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2022-09-22
卷期号:10 (39): 13145-13155
被引量:5
标识
DOI:10.1021/acssuschemeng.2c04004
摘要
Plastics are useful and beneficial materials that contribute to an improved quality of life, yet they generate significant solid wastes and emissions and consume significant energy resources. Systems analysis is incomplete on current linear production systems of plastics supply chains and their associated processes. Our study combines material flow and life cycle assessment data sets of polyethylene terephthalate (PET) and the main polyolefin polymers in the United States, comprising over 70% of plastics flows. This study estimates the total greenhouse gas (GHG) emissions and energy consumption of these supply chains, including transportation and end-of-life processes, lacking in prior studies. We calculate annual GHG emissions and energy consumption of these plastic supply chains to be 101 MMT CO2-eq and 3248 PJ in 2019, respectively. The GHG emissions of these supply chains represented 1.5% of the total U.S. emissions and 5% of the total U.S. industry-related GHG emissions. The total energy consumption of these supply chains represented 3.1% of the total U.S. energy consumption in 2019. Transportation of PET and polyolefin plastic materials contributes 5% and 2% to the total supply chain GHG emissions and energy consumption, respectively. This baseline study provides a benchmark and enables a comparison to future circular production systems for plastics in the United States.
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