Astani Department of Civil and Environmental Engineering, University of Southern California, 3620 South Vermont Avenue, Los Angeles, CA 90089, USA.
Astani Department of Civil and Environmental Engineering, University of Southern California, 3620 South Vermont Avenue, Los Angeles, CA 90089, USA; Department of Civil and Environmental Engineering, North Dakota State University, 1410 North 14th Avenue, Fargo, ND 58102, USA.
Sci Total Environ. 2021 May 15;769:144581. doi: 10.1016/j.scitotenv.2020.144581. Epub 2021 Jan 9.
Microplastics pollution is one of the most pressing environmental problems of the 21st century. While microplastics are pervasive throughout various environmental compartments, research to date has primarily focused on marine systems. Land-based microplastics sources (e.g., solid waste) have received comparatively little attention, although they account for the main flow of microplastics into aquatic environments. Solid waste microplastics sources primarily include landfill refuse, sludge, and food waste. Microplastics in these waste streams can be associated with various micropollutants that can have deleterious impacts on ecosystem health as they enter the food chain. Thus, understanding the occurrence, fate, and degradation pathways of solid waste microplastics is essential to develop comprehensive control and mitigation strategies. This study critically reviewed these key aspects of microplastics in municipal solid waste landfill refuse, sewage sludge, and food waste, and identified the interconnections of these components in the proliferation of microplastics to the environment. Additionally, microplastics related laws and regulations and their relevance to solid waste microplastics mitigation are discussed.
微塑料污染是 21 世纪最紧迫的环境问题之一。尽管微塑料广泛存在于各种环境介质中，但迄今为止的研究主要集中在海洋系统。陆地来源的微塑料（例如固体废物）相对较少受到关注，尽管它们是微塑料进入水生环境的主要来源。固体废物微塑料的主要来源包括垃圾填埋场废物、污泥和食物垃圾。这些废物流中的微塑料可能与各种微量污染物相关联，这些污染物进入食物链后会对生态系统健康产生有害影响。因此，了解固体废物微塑料的存在、命运和降解途径对于制定全面的控制和缓解策略至关重要。本研究批判性地回顾了城市固体废物填埋场废物、污水污泥和食物垃圾中微塑料的这些关键方面，并确定了这些成分在微塑料向环境扩散中的相互关系。此外，还讨论了与固体废物微塑料缓解相关的微塑料相关法律法规及其相关性。
