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

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外文摘要：Municipal solid waste(MSW)is an important destination for abandoned plastics.During the waste dis-posal 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 lea-chates 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(particles·L-1)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 dif-ferent.Furthermore,the conditional fragmentation model indicated that the landfilling process consider-ably affected the size distribution of MPs in leachates,leading to a higher percentage(＞80％)of small MPs(20-100 pm)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 con-trol during MSW disposal.

外文关键词：

MicroplasticsLandfill leachateResidual waste leachateHousehold food waste leachateSource

作者：

Lei Zhang、Wentao Zhao、Liang Zhang、Zhenxiao Cai、Ruiqi Yan、Xia Yu、Damiaà Barceló、Qian Sui

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作者单位：

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

State Key Laboratory of Pollution Control and Resource Reuse,College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China

Shanghai Institute of Pollution Control and Ecological Security,Shanghai 200092,China

PerkinElmer,Inc.,Shanghai 201203,China

Maihai Environmental Protection Technology Co.,Ltd.,Suzhou,Jiangsu 215000,China

Department of Environmental Chemistry,Institute of Environmental Assessment and Water Research,Spanish Council for Scientific Research(IDAEA-CSIC),Barcelona 08034,Spain

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基金：

National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaShanghai Talent Development FundingShanghai Youth Talent Support Program

项目编号：

2023YFC37116002207604522376066

出版年：

2024

DOI：

10.1016/j.eng.2024.02.008

工程(英文)

CSTPCDEI

ISSN：2095-8099

年,卷(期)：2024.37(6)