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Vol. 26 No. 18 (2014): Vol 26 Issue 18

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Effect of Municipal Solid Waste Compost on Leaching Heavy Metals (Chromium and Lead) into Soil

https://doi.org/10.14233/ajchem.2014.16882
Ah. Jonaidi Jafari
Department of Environmental Health, Iran University of Medical Sciences, Tehran, Iran
A. Rastegar
Department of Environmental Health Engineering, School of Public Health, Sabzevar University of Medical Sciences, Sabzevar, Iran
M. Farzadkia
Department of Environmental Health, Iran University of Medical Sciences, Tehran, Iran
R. Rezaei Kalantary
Department of Environmental Health, Iran University of Medical Sciences, Tehran, Iran
A. Rahmani
Department of Environmental Health Engineering, School of Public Health, Sabzevar University of Medical Sciences, Sabzevar, Iran

Corresponding Author(s) : A. Rastegar

rastegar.89@gmail.com

Asian Journal of Chemistry, Vol. 26 No. 18 (2014): Vol 26 Issue 18

Abstract

Compost of municipal solid waste may contain somewhat heavy metals concentrations which increase the concentration of metals in soil or groundwater. The main aim of this study was to consider the leaching of metals such as lead and chromium into two types of soil (sandy loamy soil, a sandy clay-loam soil) blended with contented compost in laboratory scale. The purred soils have spilled into columns. Treatments selected for this study were as: a: low metal content compost (LMCC), b: enriched metal content compost (EMCC), c: control. Subsequently, the soil columns were incubated at room temperature for 9 days and were irrigated daily with 250 mm de-ionized water. Leachates collected and analyzed for pH, EC, pb and Cr concentrations. The results showed that the application enriched metal content compost causes reducing pH, increasing electrical conductivity and leakage of metals compared to the control in two soils. The concentration of metals in the leachates were depended on the soil characteristics and concentration metals existence in the compost added to the soil. Therefore, application of enriched metal content compost on the soils containing a high percentage of sand may created a risk in terms of groundwater contamination with heavy metals.

Keywords

Soil Compost Heavy metals
Jonaidi Jafari, A., Rastegar, A., Farzadkia, M., Rezaei Kalantary, R., & Rahmani, A. (2014). Effect of Municipal Solid Waste Compost on Leaching Heavy Metals (Chromium and Lead) into Soil. Asian Journal of Chemistry, 26(18), 6147–6150. https://doi.org/10.14233/ajchem.2014.16882
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