Abstract

Removal of calcium ions from industrial wastewater

Author(s): Y.Hannachi, A.Hannachi

This study deals with the removal of cadmium and cyanide from galvanic industry wastewaters.The use of the electrodialysis technique for the treatment of a syntheticwastewater containing approximately 0.0089molL-1cadmium and 0.086 mol L-1 cyanide was studied using a five-compartment electrodialysis cell. The extraction of cadmiumand cyanide depends on the applied current density and it is limited by the precipitation of cadmium on the cationexchange membrane in the diluate central cell compartment.