An Acidic Injection Well Technique for Enhancement of the Removal of Copper from Contaminated Soil by Electrokinetic Remediation Process

An experimental study constituting eight different tests was performed to investigate the effect of relevant factors on the remedial efficiency of electro-kinetic process applied to clean-up Cu contaminant from three types of Iraqi soil. An efficiency enhancement scheme was employed involving pH control, acid-injection wells, and optimized potential gradient as part of the investigative program. With pH controlled within the range 2.5-3, four acid-injection wells, and a potential gradient of 0.8 V/cm; overall clean-up efficiencies of 85%, 58%, and 34% were achieved for sandy, sandy loam, and silty loam soils, respectively.