Estimation of optimum conditions for cadmium removal from contaminated soil using electro-kinetic remediation

Abstract EN

The aim of this laboratory study is to estimate the best initial pH of purging solution for cadmium clean-up from an artificially contaminated soil using electro-kinetic cell.

An efficiency enhancement scheme was employed involving pH control and injection wells as a part of the investigative program.

Seven tests were performed at different pH controlled in the anode, cathode and injection wells start from 2 to 8.

Sandy loam soil was contaminated with cadmium concentration equal to 2000 mg/kg and an initial moisture content equal to 30%.

The duration of remediation was seven days with a potential gradient of 1.2 V/cm.

The experimental results showed that the best removal efficiency was 62.8% at pH=3