Risk assessment of potentially toxic elements, microplastics, and microorganisms in groundwater around municipal solid waste landfill

IF 12.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials Pub Date : 2025-01-15 DOI:10.1016/j.jhazmat.2025.137240

Xueya Li , Tianmu Peng , Linyi Lin , Muhammad Amjad Khan , Shurui Zhang , Meijuan Kuang , Jinming Lou , Jiaxin He , Pangxiang Zhang , Xiaomao Song , Xu Wang , Qing Huang

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引用次数: 0

Abstract

Risk assessment of potential toxic elements (PTEs), microplastics (MPs) and microorganisms in groundwater around landfills is critical. Waste from landfills seeps into groundwater contaminating water quality, threatening groundwater safety, and negatively affecting the ecosystem. This study explored spatial and temporal changes in PTEs, MPs, and microorganisms in the groundwater around a closed landfill. The results showed that Mn and Cr were the most predominant PTEs in the groundwater, average Mn and Cr concentrations in June being 1.16 and 4.51 times higher than in November, respectively. The Risk assessment of PTEs in groundwater Mn was heavily contaminated, Cr was moderately contaminated. The abundance of MPs the average value of MPs in June was 1.55 times higher than that in November; the MPs indicated that groundwater is more heavily contaminated, especially in the downstream areas. The Proteobacteria is the main phylum, and PLS-PM, PTEs were positively correlated with the phylum of microorganisms, negatively correlated with the genus of microorganisms and the abundance of MPs. This study emphasizes the importance of environmental management of landfills, provide new insights into the monitoring and identification of groundwater contamination as well as scientific guidance on appropriate remediation strategies for leachate-contaminated groundwater.

Abstract Image

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城市固体垃圾填埋场周围地下水中潜在有毒元素、微塑料和微生物的风险评估。

对垃圾填埋场周围地下水中的潜在有毒元素（pte）、微塑料（MPs）和微生物进行风险评估至关重要。垃圾填埋场的废弃物渗入地下水，污染水质，威胁地下水安全，对生态系统产生负面影响。本研究探讨了封闭填埋场周围地下水中pte、MPs和微生物的时空变化。结果表明：Mn和Cr是地下水中最主要的pte， 6月份Mn和Cr的平均浓度分别是11月份的1.16倍和4.51倍；地下水pte风险评价Mn为重度污染，Cr为中度污染。6月份的MPs丰度平均值是11月份的1.55倍；MPs表明地下水污染更严重，特别是在下游地区。变形菌门为主要门，PLS-PM、pte与微生物门呈正相关，与微生物属和MPs丰度呈负相关。该研究强调了垃圾填埋场环境管理的重要性，为地下水污染的监测和识别提供了新的见解，并为渗滤液污染地下水的适当修复策略提供了科学指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Hazardous Materials 工程技术-工程：环境

CiteScore

25.40

自引率

5.90%

发文量

3059

审稿时长

58 days

期刊介绍： The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.