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中国苏州塑料废物的生命周期评估:实现快递可持续发展的管理策略。

Life cycle assessment of plastic waste in Suzhou, China: Management strategies toward sustainable express delivery.

机构信息

School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China.

School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China.

出版信息

J Environ Manage. 2024 Jun;360:121201. doi: 10.1016/j.jenvman.2024.121201. Epub 2024 May 25.

Abstract

The explosive growth of China's express delivery industry has greatly increased plastic waste, with low-value plastics not effectively utilized, such as PE packaging bags, which are often not recycled and end up in landfills or incinerators, causing significant resource waste and severe plastic pollution. A gate -to- grave life cycle assessment was adopted to assess the impacts of express delivery plastic waste (EDPW) management models (S1, landfill; S2, incineration; S3, mechanical pelletization), with Suzhou, China as a case. Results showed that mechanical pelletization, was the most environmentally advantageous, exhibiting a comprehensive environmental impact potential of -215.54 Pt, significantly lower than that of landfill (S1, 78.45 Pt) and incineration (S2, -121.77 Pt). The analysis identified that the end-of-life disposal and sorting stages were the principal contributors to environmental impacts in all three models, with transportation and transfer stages of residual waste having minimal effects. In terms of all environmental impact categories, human carcinogenic toxicity (HTc) emerged as the most significant contributor in all three scenarios. Specifically, S1 exhibited the most detrimental effect on human health, while S2 and S3 showed positive environmental impacts. Based on these findings, it is recommended that the application and innovation in mechanical recycling technologies be enhanced, the promotion of the eco-friendly transformation of packaging materials be pursued, and a sustainable express delivery packaging recycling management system be established. These strategies are essential for achieving more eco-friendly management of EDPW, reducing its environmental pollution, and moving towards more sustainable express delivery management practices.

摘要

中国快递业的爆炸式增长导致了大量塑料废物的产生,其中低价值的塑料如 PE 包装袋等没有得到有效利用,往往没有被回收,最终进入垃圾填埋场或焚烧炉,造成了巨大的资源浪费和严重的塑料污染。本研究采用从摇篮到大门的生命周期评估方法,评估了快递塑料废物(EDPW)管理模式(S1:垃圾填埋;S2:焚烧;S3:机械制粒)对环境的影响,以中国苏州为例。结果表明,机械制粒是最具环境优势的方法,其综合环境影响潜力为-215.54Pt,明显低于垃圾填埋(S1:78.45Pt)和焚烧(S2:-121.77Pt)。分析确定,在所有三种模型中,寿命终结处置和分类阶段是造成环境影响的主要因素,而残余废物的运输和转移阶段的影响可以忽略不计。在所有环境影响类别中,人类致癌毒性(HTc)在所有三种情况下都是最主要的贡献者。具体而言,S1 对人类健康的影响最大,而 S2 和 S3 则显示出积极的环境影响。基于这些发现,建议加强机械回收技术的应用和创新,推动包装材料的环保转型,建立可持续的快递包装回收管理体系。这些策略对于实现 EDPW 的更环保管理、减少其环境污染以及朝着更可持续的快递管理实践迈进至关重要。

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