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来自化石和第二代生物基原料的PBAT的比较生命周期评估

Chenkai Luo¹, Ya Zhou¹, Zhitong Chen¹

¹Guangdong Basic Research Center of Excellence for Ecological Security and Green Development, Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China.

The Science of the total environment

|September 21, 2024

概括

从林业废物制成的可生物降解塑料,如聚乙烯基合甲基 (PBAT),具有显著的环境效益. 与基于化石的版本相比,这种生物基PBAT可减少高达85%的环境影响.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

越来越多的塑料污染需要可持续的替代方案.
可生物降解塑料为传统塑料造成的环境问题提供了有希望的解决方案.
聚 (丁烯基酸盐-联合甲酸盐) (PBAT) 是一种广泛使用的可生物降解聚合物,但其与生物基原料的环境性能尚未得到充分研究.

研究的目的:

编制中国生产的PBAT的摇篮到门的生命周期库存.
对生物基PBAT与化石基PBAT和传统塑料进行比较生命周期评估 (LCA).
评估PBAT的环境性能,使用来自林业废物的第二代生物基原料.

主要方法:

汇编了中国PBAT的摇篮到门的生命周期库存.
比较生命周期评估 (LCA) 的方法.
对不同PBAT类型和传统塑料的多个类别的环境影响分析.

主要成果:

原料占化石PBAT环境影响的70%以上.
来自第二代生物基原料的PBAT在16个影响类别中减少了15-85%的环境负担.
在16个影响类别中,生物基PBAT的性能比传统塑料 (PVC,PP,HDPE,LDPE,PET) 优于15-80%,其GWP比化石基PBAT低37%.

结论:

原料的选择在很大程度上主导了PBAT的环境性能.
第二代生物基PBAT与化石基PBAT和传统塑料相比,显示出更高的环境性能.
生物制造技术的进步对于提高可生物降解塑料和整体塑料行业的可持续性至关重要.

关键词:

可生物降解的塑料.生命周期评估生命周期评估在PBAT和PBAT之间聚 (丁烯基酸盐-联合甲酸盐)第二代生物基原料第二代生物基原料

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