The distribution, behavior, and release of macro- and micro-size plastic wastes in solid waste disposal sites
Sanitary landfills and uncontrolled dumpsites are plastic wastes (PWs) reservoirs containing ∼60% of all the plastics ever made, amounting to 5,000 × 106 tons as of 2017. The distribution, long-term behavior, and release of macro- and microplastics (MPs) from disposal sites are critical to global pl...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2022
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| Online Access: | https://hdl.handle.net/10356/162137 |
| _version_ | 1826126135220502528 |
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| author | Fei, Xunchang He, Hongping Pi, Xiaoqing Lu, Xuhong Chen, Qinqin Ma, Jun Wang, Yao Fang, Mingliang Wu, Chuangzhou Feng, Shijin |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Fei, Xunchang He, Hongping Pi, Xiaoqing Lu, Xuhong Chen, Qinqin Ma, Jun Wang, Yao Fang, Mingliang Wu, Chuangzhou Feng, Shijin |
| author_sort | Fei, Xunchang |
| collection | NTU |
| description | Sanitary landfills and uncontrolled dumpsites are plastic wastes (PWs) reservoirs containing ∼60% of all the plastics ever made, amounting to 5,000 × 106 tons as of 2017. The distribution, long-term behavior, and release of macro- and microplastics (MPs) from disposal sites are critical to global plastics pollution, but are poorly understood and lack systematic assessments. We review comprehensively the available knowledge in the three aspects herein. The spatial and temporal distribution of PW in 616 municipal solid waste (MSW) samples retrieved from 275 disposal sites in 56 countries are summarized. The weight percentages of PW (%PW) generally decrease with increasing year of disposal and disposal depth. Other influential factors are disposal duration and country income level. The %PW values in different disposal sites show high regionality and spatial variability and heterogeneity. Disposal sites mostly have harsh temperature and stress, reactive liquids, and microbial activities, which are conducive to long-term processes of PW and MPs. The major processes are chemical degradation, dissolution, leaching and adsorption, biological degradation, mechanical wearing, pneumatic and hydrological transport and deposition, and conglomeration. PW leaves disposal sites via recycling, scavenging, mining, wind and surface runoff, coastal erosion and flooding, and slope failure. The release and removal pathways of PW from disposal sites have been recognized only qualitatively. In addition, the sources, presences, and secondary generation of MPs in disposal sites have been studied occasionally, whereas the transport and fate of MPs within and from disposal sites remain largely unstudied. |
| first_indexed | 2024-10-01T06:47:45Z |
| format | Journal Article |
| id | ntu-10356/162137 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:47:45Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1621372022-10-05T04:55:22Z The distribution, behavior, and release of macro- and micro-size plastic wastes in solid waste disposal sites Fei, Xunchang He, Hongping Pi, Xiaoqing Lu, Xuhong Chen, Qinqin Ma, Jun Wang, Yao Fang, Mingliang Wu, Chuangzhou Feng, Shijin School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Engineering::Environmental engineering Plastic Waste Microplastics Sanitary landfills and uncontrolled dumpsites are plastic wastes (PWs) reservoirs containing ∼60% of all the plastics ever made, amounting to 5,000 × 106 tons as of 2017. The distribution, long-term behavior, and release of macro- and microplastics (MPs) from disposal sites are critical to global plastics pollution, but are poorly understood and lack systematic assessments. We review comprehensively the available knowledge in the three aspects herein. The spatial and temporal distribution of PW in 616 municipal solid waste (MSW) samples retrieved from 275 disposal sites in 56 countries are summarized. The weight percentages of PW (%PW) generally decrease with increasing year of disposal and disposal depth. Other influential factors are disposal duration and country income level. The %PW values in different disposal sites show high regionality and spatial variability and heterogeneity. Disposal sites mostly have harsh temperature and stress, reactive liquids, and microbial activities, which are conducive to long-term processes of PW and MPs. The major processes are chemical degradation, dissolution, leaching and adsorption, biological degradation, mechanical wearing, pneumatic and hydrological transport and deposition, and conglomeration. PW leaves disposal sites via recycling, scavenging, mining, wind and surface runoff, coastal erosion and flooding, and slope failure. The release and removal pathways of PW from disposal sites have been recognized only qualitatively. In addition, the sources, presences, and secondary generation of MPs in disposal sites have been studied occasionally, whereas the transport and fate of MPs within and from disposal sites remain largely unstudied. Economic Development Board (EDB) Nanyang Technological University The authors would like to acknowledge Nanyang Technological University (NTU, Singapore), Nanyang Environment and Water Research Institute (Singapore), and Economic Development Board (Singapore) for the financial support and scholarships of this research. Xunchang Fei thanks the supports from Debris of the Anthropocene to Resources (DotA2) Lab at NTU. Jun Ma was supported by the China Scholarship Council (Grant No. 201904910309). 2022-10-05T04:55:22Z 2022-10-05T04:55:22Z 2022 Journal Article Fei, X., He, H., Pi, X., Lu, X., Chen, Q., Ma, J., Wang, Y., Fang, M., Wu, C. & Feng, S. (2022). The distribution, behavior, and release of macro- and micro-size plastic wastes in solid waste disposal sites. Critical Reviews in Environmental Science and Technology, 1-24. https://dx.doi.org/10.1080/10643389.2022.2054649 1064-3389 https://hdl.handle.net/10356/162137 10.1080/10643389.2022.2054649 2-s2.0-85127124845 1 24 en Critical Reviews in Environmental Science and Technology © 2022 Taylor & Francis Group, LLC. All rights reserved. |
| spellingShingle | Engineering::Environmental engineering Plastic Waste Microplastics Fei, Xunchang He, Hongping Pi, Xiaoqing Lu, Xuhong Chen, Qinqin Ma, Jun Wang, Yao Fang, Mingliang Wu, Chuangzhou Feng, Shijin The distribution, behavior, and release of macro- and micro-size plastic wastes in solid waste disposal sites |
| title | The distribution, behavior, and release of macro- and micro-size plastic wastes in solid waste disposal sites |
| title_full | The distribution, behavior, and release of macro- and micro-size plastic wastes in solid waste disposal sites |
| title_fullStr | The distribution, behavior, and release of macro- and micro-size plastic wastes in solid waste disposal sites |
| title_full_unstemmed | The distribution, behavior, and release of macro- and micro-size plastic wastes in solid waste disposal sites |
| title_short | The distribution, behavior, and release of macro- and micro-size plastic wastes in solid waste disposal sites |
| title_sort | distribution behavior and release of macro and micro size plastic wastes in solid waste disposal sites |
| topic | Engineering::Environmental engineering Plastic Waste Microplastics |
| url | https://hdl.handle.net/10356/162137 |
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