期刊
WATER RESEARCH
卷 164, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2019.114968
关键词
Microplastics; Landfill systems; Pollution characteristics; Landfill age
资金
- National Key R&D Program of China [2018YFC1901000]
- National Natural Science Foundation of China [21577038, 41807462]
- China Postdoctoral Science Foundation [2019T120321]
- Shanghai Sailing Program [18YF1406900]
- State Key Laboratory of Pollution Control and Resource Reuse Foundation [PCRRF17001]
Microplastics (MPs) are emerging pollutants that have been extensively detected in marine and terrestrial environments. Landfills are receptacles for cumulative loading of plastic waste derived from industry and households, but data on MPs occurrences in landfill systems are lacking. In the current study, the occurrence, characteristics and distribution patterns of MPs in landfills (including leachate and refuse) of the megacity Shanghai were investigated in accordance with different landfill ages (3-20 years). The results revealed that the average abundances of MPs in leachate and refuse were 8 (+/- 3) items/L and 62 (+/- 23) items/g, respectively. The predominant shapes and polymer types of the detected MPs were fibers and cellophane in leachate, whereas they were fragments and polyethylene in refuse. The patterns of abundance and size distribution of MPs in refuse varied from different landfill age, and different polymer MPs exhibited various occurrence patterns with increasing landfill age. Further spectra analysis suggested the presence of oxidative degradation of polyethylene MPs in the landfill process, especially for the landfill time of more than 20 years, so the fates of MPs in landfills were determined by the increase consumptions of plastics products and the degradation process of MPs in landfills. This study firstly provided a systematic overview of MPs pollution characteristics in landfill systems, and the results will foster the understanding of MPs fates over a long time scale in the environments. (C) 2019 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据