Nickel recovery from the rinse waters of plating baths

An electrolytic process is applied to the de-metalization of rinse waters emerging from nickel-plating baths. Optimum conditions of nickel recovery from this type of solution have been investigated through a series of experiments carried out in a rotating packed cell (Rollschichtzelle®). The effects...

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Bibliographic Details
Published in:Hydrometallurgy 2002-07, Vol.65 (1), p.1-8
Main Authors: Orhan, G, Arslan, C, Bombach, H, Stelter, M
Format: Article
Language:English
Subjects:
Applied sciences
Electrometallurgy
Exact sciences and technology
Metals. Metallurgy
Nickel recovery
Plating industry
Production of metals
Production of non ferrous metals. Process materials
Reduction electrolysis
Rinse waters
Rollschichtzelle
Rotating cathode
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Summary:An electrolytic process is applied to the de-metalization of rinse waters emerging from nickel-plating baths. Optimum conditions of nickel recovery from this type of solution have been investigated through a series of experiments carried out in a rotating packed cell (Rollschichtzelle®). The effects of temperature and pH of electrolyte, current density, cell rotation speed, and diameter of the cathode granules were examined. Ninety percent of the nickel was recovered from a solution of 450 mL volume, with a pH of 5.5±0.05, 2 g/L initial nickel concentration, and by using cathode granules of 5 mm in diameter. At 50 °C electrolyte temperature and 325 A/m 2 current density, 74% current efficiency was attained with 4.2 kWh/kg Ni energy consumption.
ISSN:0304-386X
1879-1158
DOI:10.1016/S0304-386X(02)00038-5