首页|Replacing Traditional Plastics with Biodegradable Plastics:Impact on Carbon Emissions

Replacing Traditional Plastics with Biodegradable Plastics:Impact on Carbon Emissions

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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 1000 traditional plastic products(plastic bags,lunch boxes,cups,etc.)were 52.09-150.36 carbon emissions equivalent of per kilogram(kg CO2eq),with the stage of plastic production contributing 50.71％-50.77％.In comparison,1000 similar BPPs topped out at 21.06-56.86 kg CO2eq,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 biodegradable plastics industry.

Carbon emissionsBiodegradable plasticsDifferent disposal scenariosDaily life consumptionEnvironmental and economic discussion

Guanyi Chen、Jianyuan Li、Yunan Sun、Zhi Wang、Gary A.Leeke、Christian Moretti、Zhanjun Cheng、Yuan Wang、Ning Li、Lan Mu、Jinyu Li、Junyu Tao、Beibei Yan、Li'an Hou

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Interdisciplinary Innovation Lab for Environment and Energy,School of Mechanical Engineering & School of Biotechnology and Food Science,Tianjin University of Commerce,Tianjin 300134,China

School of Environmental Science and Engineering,Tianjin University,Tianjin 300350,China

School of Ecology and Environment,Tibet University,Lhasa 850012,China

Tianjin Key Laboratory of Biomass,Wastes Utilization,Tianjin Engineering Research Center for Organic Wastes Safe Disposal and Energy Utilization,Tianjin 300072,China

School of Chemical Engineering,University of Birmingham,Birmingham B15 2TT,UK

Department of Environmental Systems Science,ETH Zürich,Zürich CH-8092,Switzerland

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国家自然科学基金国家自然科学基金国家自然科学基金国家重点研发计划

5210015752176197521001562022YFD1601100

2024

10.1016/j.eng.2023.10.002

工程(英文)

工程(英文)

CSTPCDEI
ISSN：2095-8099
年,卷(期)：2024.32(1)
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