Environmental benefit of recycling plastics from waste electrical & electronic equipment

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL Resources Conservation and Recycling Pub Date : 2024-08-07 DOI:10.1016/j.resconrec.2024.107855

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Abstract

Plastic recycling from waste electrical and electronic equipment (WEEE) can effectively deal with both the resource crisis and environmental pollution. However, the life cycle environmental impacts of recycling plastics derived from WEEE are still unclear. Therefore, this study adopts life cycle assessment and machine learning methods to estimate the environmental impacts and mitigation potentials of WEEE plastics recycling. We find the environmental degradation of WEEE waste plastics recycling are mainly from electricity consumption and transportation during the disassembly and granulation stages. Significant variation in the reduction effect of WEEE plastics recycling technologies is observed, ranging from 13 % to 77 %. The WEEE generation is projected to exhibit an S-shaped trend from 103 tonnes in 1980 to 15.42 million tonnes (Mt) in 2050, contributing to 10.33 Mt of carbon reduction. Improving the efficiency of WEEE plastics recycling technologies and enhancing legal recycling of waste air conditioner can efficiently reduce environmental emissions.

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从废弃电气和电子设备中回收塑料对环境的益处

从废弃电气和电子设备（WEEE）中回收塑料可有效解决资源危机和环境污染问题。然而，从废弃电子电气设备（WEEE）中回收塑料的生命周期环境影响尚不明确。因此，本研究采用生命周期评估和机器学习方法来估算 WEEE 塑料回收利用的环境影响和减缓潜力。我们发现，WEEE 废塑料回收利用的环境退化主要来自拆解和造粒阶段的电力消耗和运输。WEEE 塑料回收技术的减排效果差异显著，从 13% 到 77% 不等。预计废弃电子电气设备的产生量将呈现 S 型趋势，从 1980 年的 1.03 亿吨增加到 2050 年的 1542 万吨，从而减少 1033 万吨碳排放。提高 WEEE 塑料回收技术的效率，加强废空调的合法回收，可以有效减少环境排放。

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来源期刊

Resources Conservation and Recycling 环境科学-工程：环境

CiteScore

22.90

自引率

6.10%

发文量

625

审稿时长

23 days

期刊介绍： The journal Resources, Conservation & Recycling welcomes contributions from research, which consider sustainable management and conservation of resources. The journal prioritizes understanding the transformation processes crucial for transitioning toward more sustainable production and consumption systems. It highlights technological, economic, institutional, and policy aspects related to specific resource management practices such as conservation, recycling, and resource substitution, as well as broader strategies like improving resource productivity and restructuring production and consumption patterns. Contributions may address regional, national, or international scales and can range from individual resources or technologies to entire sectors or systems. Authors are encouraged to explore scientific and methodological issues alongside practical, environmental, and economic implications. However, manuscripts focusing solely on laboratory experiments without discussing their broader implications will not be considered for publication in the journal.