A Model for Evaluating the Feasibility of an Extraction Procedure for Heavy Metal Removal from Contaminated Soils

被引：0
|
作者：
P. H. Masscheleyn
F. M. Tack
M. G. Verloo
机构：
[1] University of Ghent,Laboratory of Analytical Chemistry and Applied Ecochemistry
来源：
Water, Air, and Soil Pollution | 1999年 / 113卷
关键词：
extraction; heavy metals; soil remediation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A model was developed that allowed for the evaluation of a soil metal cleaning technique in a rapid and cost effective manner. Metal flow (Pb, Cu, Zn, and Cd) during a counter-current soil-acid extraction procedure, consisting of a decarbonation, solubilisation, and washing step, was determined. Required input data are total soil metal content and metal equilibrium distribution coefficients, derived from batch equilibration experiments. The model was calibrated and validated against experimentally obtained results. Model predictions adequately described metal behaviour and removal in each of the extraction steps. Based on the results, optimum operating conditions for the steps involved in the extraction procedure were determined and the feasibility of the counter-current extraction procedure for heavy metal removal from a contaminated soil evaluated.
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页码：63 / 76
页数：13
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