标题：Microplastics spatiotemporal distribution and plastic-degrading bacteria identification in the sanitary and non-sanitary municipal solid waste landfills

入藏号：WOS:000821324600003

中国科学院文献情报中心期刊分区：环境科学与生态学1区TOP（2022）

本校作者：李娜英；韩智勇*；郭南飞；周志强；刘莹

* Corresponding author

来源出版物：JOURNAL OF HAZARDOUS MATERIALS  卷: 438  文献号: 129452

出版年：2022

第一地址：成都理工大学

关键词：Microplastics；Plastic-degrading microorganisms；Spatiotemporal distribution；Degradation mechanism；Municipal solid waste landfill

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摘要：The municipal solid waste landfill (MSWL) is an important source of microplastics (MPs) and a huge bioreactor for plastic-degrading microorganisms (PDM). However, the spatiotemporal distribution and degradation mechanisms of MPs in MSWLs are unclear. Therefore, they were studied using the samples drilled in a sanitary landfill (SL) and an non-sanitary landfill (NSL). The results showed that there were a lot of polyethylene (PE), polypropylene (PP), polystyrene (PS), polyurethane (PU), Polyamide (PA), Polyethylene terephthalate (PET) and Polyvinyl chloride (PVC) in the landfill, and their abundance ranged from 0 to 80 items/g. The MPs surface gradually faded, became rough and even yielded cracks and holes with the landfill depth and age increase. The tiny-size MPs (< 100 mu m) were the most abundant and their amount significantly increased from 28.14% to 49.13% in SL and from 24.54% to 59.51% in NSL, respectively, while large-size MPs were significantly reduced from the top to the bottom. Lysinibacillus (0.21%-67.87%) and Bacillus (0.10%-67.00%) were the dominate PDMs in SL and Candidatus_Caldatribacterium (5.06%-73.48%) was the dominate in NSL. The PE degradation was closely related to Candidatus_Cloacimonas (r = 0.688*) and Candidatus_Caldatribacterium (r = 0.680*); PS and

文章链接地址: https://linkinghub.elsevier.com/retrieve/pii/S0304389422012456