Remediation of Zinc Contaminated Soils by Stabilization/Solidification Technique
Urban development has increased the need to redevelop a contaminated land. This has encouraged in-situ remediation approaches, for which Stabilization/ Solidification (S/S) technique is particularly suitable for treating metal contamination. In this study, Zinc contaminated soil sample was produced by mixing zinc with uncontaminated soil. This soil was then mixed with Portland cement as a binder and cured for 7 and 14 days. The solidified samples were tested for toxicity according to TCLP approach. This test is to determine the effectiveness of cement as an additive material to contain the toxicity of the solidified samples. The result indicates that by adding 15% of cement to the contaminated soil, there is a significant reduction of contaminant up to almost 99% after 14 days. This shows that cement is very effective material in containing the toxicity of contaminated soil using S/S technique.
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