Prediction models of current efficiency and cathodic overpotential for the zinc electrodeposition process

Laboratory tests were carried out to develop prediction models of current efficiency and cathodic overpotential for the zinc electrodeposition process. Nine variables of electrolyte composition in 3 levels of their concentration were analyzed on the basis of an experimental design of surface response. For the cathodic overpotential, individual effects where obtained for zinc, arabic gum and arsenic %2b antimony. Besides, two combined effects were obtained for zinc-acid and iron-ammonia. For current efficiency, SrCO3, cobalt and arsenic %2b antimony have the more important effect, while manganese-ammonia exhibits a combined effect. Developed models have been evaluated at pilot level attaining a good prediction results.

Arabic gums; Cathodic overpotentials; Combined effect; Current efficiency; Developed model; Electrolyte compositions; Laboratory test; Prediction model; Surface response; Zinc electrodeposition; Ammonia; Arsenic; Cobalt; Efficiency; Electrodeposition; Forecasting; Lead; Manganese; Mathematical models; Zinc

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