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A New Circulation Method for Electrokinetic Remediation of Soil Contaminated with Lead  

이현호 (LG환경안전연구원)
백기태 (한국과학기술원 생명화학공학과)
양지원 (한국과학기술원 생명화학공학과)
Publication Information
Journal of Soil and Groundwater Environment / v.8, no.1, 2003 , pp. 9-16 More about this Journal
Abstract
A new method has been proposed and developed that solves the problem of decreasing electroosmotic flow rate by excess $H^{+}$ and precipitation of heavy metal by $OH^{-}$. An electrolytic solution was circulated between the anode and cathode compartments that enabled the pH at the anode and cathode to be controlled. The change of the soil pH by circulation systems affects the operation time, by lowering the rate of increase of the electric potential gradient, and the removal efficiency of heavy metals, by affecting the soil pH. Since there was no effluent from the cathode compartment in circulation system, there was no need to treat the wastewater after the experiment, which resulted in the reduction of influent electrolyte volume.
Keywords
electrokinetic; heavy metal; remediation; pH; circulation;
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