Metal recovery in a pilot-scale rotating cylindrical wiper-blade electrode system
✍ Scribed by T. Takahashi; M.I. Ismail; T.Z. Fahidy
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 796 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0013-4686
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✦ Synopsis
The performance of an experimental pilot-scale electrochemical reactor using a rotating cylindrical electrode equipped with wiper blades is described. Data obtained from monopolar depositing and bipolar strippingdepositing of copper from dilute aqueous electrolytes are presented and certain economic aspects of metal recovery are discussed. NOMENCLATURE sum of the product costs attributable. to dc power (rectification, cell construction, motors and pumps, per unit time of operation) electrolyte concentration; c; in the ith compartment, c; 0 its initial value; cE final concentration (batch o&ration) or exit concentration (continuous flow operation) in a compartment wiper blade width potential drop between rotating surface and adjacent electrolyte solution annulus gap, R,-R, gap between wiper blade and the rotating electrode surface recovery factor, P,JPR effective electrode length number of cells in the plant cost of substance transferred per one mole value of substance (metal) per mole, S/mol; Pk per ounce recovery cost of substance, $/mol average spe-cific dc energy requirement, kWh/kg cost of substance treatment per unit volume; P; its