Contaminants in soil-like material recovered by landfill mining from five old dumps in India

•Soil-like material of aged solid waste was collected from five Indian dumpsites.•Suitability of soil-like material for reuse in earthfill/embankments was assessed.•Heavy metals, leaching of color, soluble salts and organic content were determined.•Soil-like material was compared with natural soils...

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Published in:Process safety and environmental protection 2020-05, Vol.137, p.82-92
Main Authors: Somani, Mohit, Datta, Manoj, Ramana, G.V., Sreekrishnan, Trichur Ramaswamy
Format: Article
Language:English
Subjects:
Cadmium
Chromium
Contaminants
Contamination
Dumps
Heavy metals
Landfill mining
Landfills
Leachates
Municipal solid waste
Municipal waste management
Nickel
Sediment pollution
Soil contamination
Soil pollution
Soil water
Soil-like material
Soils
Solid waste management
Waste disposal sites
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creator Somani, Mohit
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description •Soil-like material of aged solid waste was collected from five Indian dumpsites.•Suitability of soil-like material for reuse in earthfill/embankments was assessed.•Heavy metals, leaching of color, soluble salts and organic content were determined.•Soil-like material was compared with natural soils from nearby areas of dumpsites.•Soil-like material cannot be reused in offsite application without any treatment. Soil-like material (SLM) was mined from five municipal solid waste (MSW) dumps to assess its potential for reuse in earthwork projects. The contamination levels of SLM (
doi_str_mv 10.1016/j.psep.2020.02.010
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Soil-like material (SLM) was mined from five municipal solid waste (MSW) dumps to assess its potential for reuse in earthwork projects. The contamination levels of SLM (&lt;4.75 mm) were determined based on organic content, total soluble solids, the release of colored leachate, and heavy metals. Organic content in SLM was found to be 4–24.5 % whereas in the local soils (nearby areas) it was found to be 1–1.2 %. Total soluble solids were found to be in the range of 4820−25220 mg/kg, several times higher than that of the local soils (500−1000 mg/kg). The intensity of yellow-brown color in the water extract from SLM was observed to be 205–925 PCU while in the water extract of local soils it was found to be 25–40 PCU, highlighting the potential for release of colored leachate from SLM. Heavy metals in the SLM including chromium, copper, nickel, zinc, cadmium, and lead were found to be moderately to strongly elevated. 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Soil-like material (SLM) was mined from five municipal solid waste (MSW) dumps to assess its potential for reuse in earthwork projects. The contamination levels of SLM (&lt;4.75 mm) were determined based on organic content, total soluble solids, the release of colored leachate, and heavy metals. Organic content in SLM was found to be 4–24.5 % whereas in the local soils (nearby areas) it was found to be 1–1.2 %. Total soluble solids were found to be in the range of 4820−25220 mg/kg, several times higher than that of the local soils (500−1000 mg/kg). The intensity of yellow-brown color in the water extract from SLM was observed to be 205–925 PCU while in the water extract of local soils it was found to be 25–40 PCU, highlighting the potential for release of colored leachate from SLM. Heavy metals in the SLM including chromium, copper, nickel, zinc, cadmium, and lead were found to be moderately to strongly elevated. 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subjects Cadmium
Chromium
Contaminants
Contamination
Dumps
Heavy metals
Landfill mining
Landfills
Leachates
Municipal solid waste
Municipal waste management
Nickel
Sediment pollution
Soil contamination
Soil pollution
Soil water
Soil-like material
Soils
Solid waste management
Waste disposal sites
title Contaminants in soil-like material recovered by landfill mining from five old dumps in India
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