Synergistic effects of economic benefits, resource conservation and carbon mitigation of kitchen waste recycling from the perspective of carbon neutrality

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL Resources Conservation and Recycling Pub Date : 2023-10-19 DOI:10.1016/j.resconrec.2023.107262

Zhaohua Wang , Shuxuan Wang , Hao Li , Yang Lu , Bin Zhang , Hongzhi Zhang , Shuang Zhang

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Abstract

Kitchen waste, accounts for 40 %∼60 % of China's municipal solid waste, which recycles not only avoid waste of resources, but also reduces greenhouse gas emissions. Based on the survey data of Beijing municipal waste treatment plant, this study uses life cycle assessment to evaluate three kinds of kitchen waste treatment modes: aerobic composting, anaerobic digestion and anaerobic synergy. Then we analyze the technical feasibility, economic benefits and mitigation potential of three waste treatment modes. The anaerobic synergy has the highest technical feasibility and economic benefits. The total carbon emissions of different modes, through quantifying its emissions of collection, transportation, disposal and leakage, was aerobic composting > anaerobic digestion > anaerobic synergy. If all kitchen waste were treated with anaerobic synergy, cumulative carbon mitigation per person during 2025∼2060 was expected to 1019.2—1813.2 kg. Thus, recycling kitchen waste has a large mitigation potential to achieve China's carbon neutrality.

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碳中和视角下餐厨废弃物资源化利用的经济效益、资源节约和碳减排协同效应

餐厨垃圾占中国城市固体废物的40%～60%，回收利用不仅避免了资源浪费，还减少了温室气体排放。本研究以北京市城市垃圾处理厂的调查数据为基础，采用生命周期评价方法，对好氧堆肥、厌氧消化和厌氧协同三种餐厨垃圾处理模式进行了评价。然后分析了三种垃圾处理模式的技术可行性、经济效益和缓解潜力。厌氧协同具有最高的技术可行性和经济效益。不同模式的总碳排放量，通过量化其收集、运输、处置和泄漏的排放量，为好氧堆肥>；厌氧消化>；厌氧协同作用。如果对所有餐厨垃圾进行厌氧协同处理，2025年至2060年期间人均累计碳减排量预计为1019.2-1813.2 kg。因此，回收餐厨垃圾对实现中国碳中和具有巨大的减排潜力。

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来源期刊

Resources Conservation and Recycling 环境科学-工程：环境

CiteScore

22.90

自引率

6.10%

发文量

625

审稿时长

23 days

期刊介绍： The journal Resources, Conservation & Recycling welcomes contributions from research, which consider sustainable management and conservation of resources. The journal prioritizes understanding the transformation processes crucial for transitioning toward more sustainable production and consumption systems. It highlights technological, economic, institutional, and policy aspects related to specific resource management practices such as conservation, recycling, and resource substitution, as well as broader strategies like improving resource productivity and restructuring production and consumption patterns. Contributions may address regional, national, or international scales and can range from individual resources or technologies to entire sectors or systems. Authors are encouraged to explore scientific and methodological issues alongside practical, environmental, and economic implications. However, manuscripts focusing solely on laboratory experiments without discussing their broader implications will not be considered for publication in the journal.