结合LCA-MFA模型来确定中国塑料价值链的环境影响减缓途径
Hongda Liang1, Huijuan Dong1,2, Chenyi Zhang1
1School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
iScience
|September 11, 2023
概括
可持续的塑料管理需要了解材料流动和环境影响. 中国中国中国中国.
科学领域:
- 环境科学 环境科学
- 工业生态学 工业生态学
- 材料科学 材料科学 材料科学
背景情况:
- 有效的塑料管理需要全面了解材料流动和相关的环境影响.
- 中国的塑料价值链由于高消费和低回收率,特别是包装和织品,造成了严重的环境负担.
研究的目的:
- 绘制中国价值链中八种主要塑料的材料流动图.
- 调查中国整个塑料价值链对环境的影响.
- 确定和评估缓解途径,以减少中国塑料行业的环境足迹.
主要方法:
- 材料流量分析 (MFA) 来追踪塑料的移动.
- 生命周期评估 (LCA) 用于量化环境影响.
- 场景分析,以根据不同的缓解策略预测未来的环境绩效.
主要成果:
- 包装和织行业是塑料消费和环境负担的主要驱动因素,其特点是回收率低.
- 显著的环境影响源于塑料生产和制造阶段,与煤炭原料和电力消耗有关.
- 开发了六种情景,预计在联合减缓战略下,到2060年环境影响可能减少14%-57%.
结论:
- 通过可再生能源途径向碳中和过渡对于减轻环境影响至关重要.
- 提高塑料回收率和采用先进技术是可持续塑料管理的重要组成部分.
- 该研究为制定有效策略提供了可操作的见解,以减少全球塑料价值链的环境负担.
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