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ELECTROKINETIC REMEDIATION STUDY FOR CADMIUM

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Author(s): R. K. Srivastava, R. P. Tiwari, P. Bala Ramudu

Journal: Iranian Journal of Environmental Health Science & Engineering
ISSN 1735-1979

Volume: 4;
Issue: 4;
Start page: 207;
Date: 2007;

Keywords: Ammonium citrate | cadmium | electrokinetic remediation | sodium citrate

ABSTRACT
This paper presents the results of an experimental research undertaken to evaluate different purgingsolutions to enhance the removal of cadmium from spiked contaminated field soil by electrokineticremediation. Three experiments were conducted when soil was saturated with deionised water andsubsequently deionised water, ammonium citrate and sodium citrate were used as purging solutions atanode end. One experiment was conducted when the soil was saturated with ammonium citrate and itselfwas used as the purging solution. Results showed that 49% reduction of cadmium concentration wasachieved in the case of soil saturated (washed) with ammonium citrate as well as purging solution alsowas ammonium citrate. The soil pH and washing solutions were the most important factors in controllingthe removal of cadmium in electrokinetic remediation process.
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