APPLICATION OF ELECTROKINETIC TECHNIQUES FOR REMEDIATION OF LEAD-CONTAMINATED SOIL

摘要

Electrokinetic phenomena are emerging techniques and very effective method that has aroused interest among scientists in the past few decades. Electrokinetic remediation may be effectively useful in the removal of Pb in soils containing kaolinite having a low capacity and adsorption. However, clean up of soil with high adsorption/buffering capacity by electrokinetic technique is becoming very difficult. This work aims to clean up Pb (II) contaminant from soils (kaolinite) while the influence of direct current in the pilot scale for 7th and 14th days under the same conditions was investigated. Soluble Pb is transported towards the cathode electrode which is highly affected by pH. Best results of Pb removal efficiencies for the test condition was more than 60% in 0.2 distances from the anode electrode.