New Insights into Microplastic Contamination in Different Types of Leachates: Abundances, Characteristics, and Potential Sources  

作　　者：Lei Zhang Wentao Zhao Liang Zhang Zhenxiao Cai Ruiqi Yan Xia Yu Damià Barceló Qian Sui 

机构地区：[1]State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process,School of Resources and Environmental Engineering,East China University of Science and Technology,Shanghai 200237,China [2]State Key Laboratory of Pollution Control and Resource Reuse,College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China [3]Shanghai Institute of Pollution Control and Ecological Security,Shanghai 200092,China [4]PerkinElmer,Inc.,Shanghai 201203,China [5]Maihai Environmental Protection Technology Co.,Ltd.,Suzhou,Jiangsu 215000,China [6]Department of Environmental Chemistry,Institute of Environmental Assessment and Water Research,Spanish Council for Scientific Research(IDAEA-CSIC),Barcelona 08034,Spain

出　　处：《Engineering》2024年第6期62-68,共7页工程（英文）

基　　金：supported by the National Key Research and Development Program of China(2023YFC3711600);the National Natural Science Foundation of China(22076045 and 22376066);the Shanghai Talent Development Funding,and the Shanghai Youth Talent Support Program.

摘　　要：Municipal solid waste(MSW)is an important destination for abandoned plastics.During the waste disposal process,large plastic debris is broken down into microplastics(MPs)and released into the leachate.However,current research only focuses on landfill leachates,and the occurrence of MPs in other leachates has not been studied.Therefore,herein,the abundance and characteristics of MPs in three types of leachates,namely,landfill leachate,residual waste leachate,and household food waste leachate,were studied,all leachates were collected from the largest waste disposal center in China.The results showed that the average MP abundances in the different types of leachates ranged from(129±54)to(1288±184)MP particles per liter(particlesL1)and the household food waste leachate exhibited the highest MP abundance(p<0.05).Polyethylene(PE)and fragments were the dominant polymer type and shape in MPs,respectively.The characteristic polymer types of MPs in individual leachates were different.Furthermore,the conditional fragmentation model indicated that the landfilling process considerably affected the size distribution of MPs in leachates,leading to a higher percentage(>80%)of small MPs(20–100 lm)in landfill leachates compared to other leachates.To the best of our knowledge,this is the first study discussing the sources of MPs in different leachates,which is important for MP pollution control during MSW disposal.

关 键 词：Microplastics Landfill leachate Residual waste leachate Household food waste leachate Source 

分 类 号：X703[环境科学与工程—环境工程]