Membrane Electrolysis

Description

• Pass electrical current through electrolytes separated by an ion specific membrane, causing the ions to either:
• pass through a selective membrane
• become oxidized or reduced
• Typically used for bath maintenance of chromic acid; mostly in hard chrome or chromic acid anodize
• See also Electrodialysis

Advantages / Limitations

• Maintains lower concentrations of metallic impuriites

Resources

• Cushnie, George C. Jr. Pollution Prevention and Control Technology for Plating Operations. National Center for Manufacturing Sciences, Ann Arbor, MI, 1994.
• Environmental Management Centre