An insight into the benefits of substituting polypropylene with biodegradable polylactic acid face masks for combating environmental emissions

被引：16

作者：

Lyu, Linxiang ^{[1
]}

Peng, He ^{[1
]}

An, Chunjiang ^{[1
]}

Sun, Huijuan ^{[2
]}

Yang, Xiaohan ^{[1
]}

Bi, Huifang ^{[1
]}

机构：

[1] Concordia Univ, Dept Bldg Civil & Environm Engn, Montreal, PQ H3G 1M8, Canada

[2] Chinese Acad Sci, Univ Chinese Acad Sci, Shanghai Inst Nutr & Hlth, Shanghai 200031, Peoples R China

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2023年 / 905卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Life cycle assessment (LCA); Face mask; Polylactic acid (PLA); Polypropylene (PP); Environmental emissions; MANAGEMENT; ENERGY; ALTERNATIVES; POLYETHYLENE; UNCERTAINTY; BIODIESEL; POLYMERS; EXPOSURE; PLASTICS; IMPACT;

D O I：

10.1016/j.scitotenv.2023.167137

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Mask waste can affect the natural environment and human health. In this study, the life cycle assessment (LCA) of two types of face masks (Polylactic acid (PLA) and Polypropylene (PP)) was first performed to evaluate the environmental impacts from production to end-of-life, and then, greenhouse gas (GHG) emissions were estimated for each life stage. The GHG emissions for one functional unit of PP and PLA face masks were estimated to be 6.27E+07 and 5.06E+07 kg CO2 eq, respectively. Explicitly, PLA mask production emissions are 37 % lower as compared to those for PP masks. Packaging has been recognized as a major GHG source throughout the product's life cycle. This study may provide a new insight into the environmental benefits of reducing GHG emissions within PLA face mask life cycles. Biodegradable and environmentally friendly materials can be used in the manufacturing and packaging of face masks.

引用

页数：12

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