Electrokinetic removal of aluminum from water potabilization treatment sludge

► Electrokinetic extraction for remediation of potabilization water treatment sludge. ► Acetic and citric acids or EDTA was used to reduce formation of solid Al(OH)3. ► Best results were obtained with acetic acid added in the cathode chamber. ► Speciation diagrams of (Al (III)-chelating agent) were made for data interpretation.