Contamination Levels of Soil-like Material Recovered Through Landfill Mining from Anantapur Dump Yard, India.

IF 2.2 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Rama Bhupal Reddy Donthi, Bhavani Ramannagari
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引用次数: 0

Abstract

Landfill mining (LFM) is increasingly adopted in India as a strategy to reclaim land and recover materials from legacy municipal solid waste (MSW) dumpsites. The study evaluates the contamination levels of soil-like material (SLM: < 4.75 mm fine fraction) recovered from the Anantapur dump yard in South India, with the aim of evaluating its potential for reuse potential and environmental risks. Samples were analysed for organic content, total soluble solids, leachate characteristics, and heavy metal concentrations, using pollution indices such as the contamination Factor (Cf), geo-accumulation index (Igeo), and enrichment factor (EF) were applied to determine contamination severity. The organic content in SLM ranged from 14-17%, significantly exceeding typical thresholds for engineering reuse. Total soluble solids (800-1000 mg/L) and leachate sulphate and chloride concentrations, surpassed national water quality standards. Heavy metals such as lead and copper exhibited extreme contamination, while zinc and manganese show moderate to high contamination. The findings highlight that while landfill mining aids in waste reduction and land reclamation, the high contamination levels in SLM necessitate proper remediation before reuse. The findings contribute to growing knowledge on LFM and provide site-specific data critical for sustainable landfill reclamation in semi-arid regions.

印度Anantapur垃圾场填埋采矿回收的类土物质污染水平。
垃圾填埋场采矿(LFM)在印度越来越多地被采用,作为回收土地和从遗留的城市固体废物(MSW)垃圾场回收材料的战略。研究评估了类土物质(SLM: f)的污染程度,并采用地质积累指数(Igeo)和富集因子(EF)来确定污染程度。SLM中的有机含量在14-17%之间,明显超过了工程重用的典型阈值。总可溶性固形物(800-1000 mg/L)和渗滤液硫酸盐、氯化物浓度均超过国家水质标准。铅、铜等重金属表现为重度污染,锌、锰表现为中度至重度污染。研究结果强调,虽然填埋采矿有助于减少废物和土地复垦,但SLM的高污染水平需要在再利用之前进行适当的补救。这些发现有助于增加对LFM的了解,并为半干旱地区的可持续垃圾填埋场回收提供关键的特定地点数据。
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来源期刊
CiteScore
5.60
自引率
3.70%
发文量
230
审稿时长
1.7 months
期刊介绍: The Bulletin of Environmental Contamination and Toxicology(BECT) is a peer-reviewed journal that offers rapid review and publication. Accepted submissions will be presented as clear, concise reports of current research for a readership concerned with environmental contamination and toxicology. Scientific quality and clarity are paramount.
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