可生物降解塑料取代传统塑料--对碳排放的影响  

Replacing Traditional Plastics with Biodegradable Plastics:Impact on Carbon Emissions

作　　者：Guanyi Chen Jianyuan Li Yunan Sun Zhi Wang Gary ALeeke Christian Moretti Zhanjun Cheng Yuan Wang Ning Li Lan Mu Jinyu Li Junyu Tao Beibei Yan Li'an Hou 

机构地区：[1]Interdisciplinary Innovation Lab for Environment and Energy,School of Mechanical Engineering&School of Biotechnology and Food Science,Tianjin University of Commerce,Tianjin 300134,China [2]School of Environmental Science and Engineering,Tianjin University,Tianjin 300350,China [3]School of Ecology and Environment,Tibet University,Lhasa 850012,China [4]Tianjin Key Laboratory of Biomass,Wastes Utilization,Tianjin Engineering Research Center for Organic Wastes Safe Disposal and Energy Utilization,Tianjin 300072,China [5]School of Chemical Engineering,University of Birmingham,Birmingham B152TT,UK [6]Department of Environmental Systems Science,ETH Zürich,Zürich CH-8092,Switzerland

出　　处：《Engineering》2024年第1期152-162,共11页工程（英文）

基　　金：the National Natural Science Foundation of China(52100157,52176197,and 52100156);the National Key Research and Development Program of China(2022YFD1601100).

摘　　要：In recent years,a great deal of attention has been focused on the environmental impact of plastics,includ-ing the carbon emissions related to plastics,which has promoted the application of biodegradable plas-tics.Countries worldwide have shown high interest in replacing traditional plastics with biodegradable plastics.However,no systematic comparison has been conducted on the carbon emissions of biodegrad-able versus traditional plastic products.This study evaluates the carbon emissions of traditional and biodegradable plastic products(BPPs)over four stages and briefly discusses environmental and economic perspectives.Four scenarios-namely,the traditional method,chemical recycling,industrial composting,and anaerobic digestion-are considered for the disposal of waste BPPs(WBPPs).The analysis takes China as a case study.The results show that the carbon emissions of 1000traditional plastic products(plastic bags,lunch boxes,cups,etc.)were52.09-150.36 carbon emissions equivalent of per kilogram(kg CO_(2)eq),with the stage of plastic production contributing 50.71%-50.77%.In comparison,1000 similar BPPs topped out at 21.06-56.86 kg CO_(2)eq,approximately 13.53%-62.19%lower than traditional plastic prod-ucts.The difference was mainly at the stages of plastic production and waste disposal,and the BPPs showed significant carbon reduction potential at the raw material acquisition stage.Waste disposal plays an important role in environmental impact,and composting and anaerobic digestion are considered to be preferable disposal methods for WBPPs.However,the high cost of biodegradable plastics is a challenge for their widespread use.This study has important reference significance for the sustainable development of the biodegradableplastics industry.

关 键 词：Carbon emissions Biodegradable plastics Different disposal scenarios Daily life consumption Environmental and economic discussion 

分 类 号：X70[环境科学与工程—环境工程]