Ultrasound improves electrolytic recovery of metals.
Ultrasound has been shown to improve the cathodic current efficiency of copper electrodeposited from a dilute acidic sulphate bath and also zinc from a dilute alkaline zincate bath. Depending upon the plating parameters the metal may be plated with an enhanced value as a foil, sheet or powder. This agitation may be utilised in the recovery of metal from waste solutions and also in the recycling of acids and alkalies.
Department of Materials Science and Engineering, University of Surrey, Guildford, UK. robert.walker@surrey.ac.uk
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