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Circulating Particulate Bed Cathode for Metal Recovery

Cheng, Chun-Yee and Dawson, Richard and Kelsall, Geoff and Robson, Anna (2006) Circulating Particulate Bed Cathode for Metal Recovery. In: 57th Annual Meeting of ISE, 2006-08-312006-09-05, Endinburgh.

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Abstract

Applications of electrochemical technology involving low reactant concentrations often require electrodes with high mass transport rates and specific surface areas to increase cross-sectional current densities and optimise capital and operating costs. For electrodeposition of metals from dilute solutions, cathode feeder electrodes contacting unconsolidated beds of moving, conducting particles that can grow, achieve these requirements, and enable continual harvesting of the metallic product by hydraulic transport from the bed of the particles, the relative motion of which may facilitate adherent and coherent deposit morphologies. One design option, shown schematically in Fig.1, is a circulating particulate bed electrode [1,2], for which experimental results will be reported and compared with model predictions for recovery of: 1. low concentrations of platinum from aqueous iodide solutions with simultaneous generation of tri-iodide on a carbon felt anode (Fig.1); 2. metals from acidic aqueous chloride solutions, produced by the leaching of waste electrical and electronic equipment (WEEE), containing precious metals (Ag, Au, Pd) in low concentrations and base metals (Cu, Pb, Sn etc.) in high concentrations.

Item Type: Conference or Workshop Item (Other)
Journal or Publication Title: 57th Annual Meeting of ISE
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
ID Code: 58005
Deposited By: ep_importer_pure
Deposited On: 19 Oct 2012 13:35
Refereed?: Yes
Published?: Published
Last Modified: 10 Apr 2014 02:59
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/58005

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