Electrochemical removal of copper ions from dilute solutions using packed bed electrode. Part ІІ

Conversion of soluble precious copper ions into a solid form in dilute wastewater effluents for further reuse was studied by using a packed-bed cell. The cathode packing consisted of graphite particles that have an average particle size of 0.125 cm. The effects of electrolysis time and initial copper concentration were studied. The cell was found to be effective in reducing metal ion concentration to less than 0.05% of the initial concentration and maximum current efficiency reached upto 96.2% for dilute copper solution (100 mg/l). It was observed that using this cell was effective in reducing copper ion concentration from 100 mg/l to less than 4 mg/l.