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Pakistan Journal of Biological Sciences

Year: 2005 | Volume: 8 | Issue: 8 | Page No.: 1081-1085
DOI: 10.3923/pjbs.2005.1081.1085
Comparison of Heavy Metals Extraction Efficiency in Contaminated Soils by Various Concentrations of EDTA
A. H. Mahvi, A. R. Mesdaghinia and D. Naghipoor

Abstract: This study aimed to establish an optimized concentration and application of Na2-EDTA in heavy metals removal from contaminated soils. Laboratory experiments were conducted to evaluate the interaction of metals (Cd, Zn and Pb) in soil. Thus, the feasibility of soil washing for the decontaminated silt, clay and loam with single and several metals were evaluated in laboratory-scale batch experiments. Extraction of Cd, Zn and Pb in experimental soils was determined by several different concentrations of extraction solutions. Batch washing of the contaminated soil with deionised water was used as a control. Of the washing reagent test, Na2-EDTA 0.1 M solutions were generally more effective for removing heavy metals from soils. Na2-EDTA 0.1M preferentially extracted lead over Cd and Zn. However, Na2-EDTA 0.005 M solution indicated higher removal efficiency for Cd and Zn.

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How to cite this article
A. H. Mahvi, A. R. Mesdaghinia and D. Naghipoor, 2005. Comparison of Heavy Metals Extraction Efficiency in Contaminated Soils by Various Concentrations of EDTA. Pakistan Journal of Biological Sciences, 8: 1081-1085.

Keywords: heavy metal, contaminated soil and edta

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