Fluidized-Bed Electrodeposition of Heavy Non-Ferrous Metals

Tsapakh, S.L.; Volkov, L. V.

doi:10.1016/b978-0-08-040430-1.50017-1

Cited by 1 publication

(1 citation statement)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The phenomenon of low faradiac efficiency in electrowinning when the limiting current for metal ion deposition has not been exceeded has been reported in a number of other studies employing three-dimensional cathodes [33][34][35][36][37][38][39]. For example, Tsapkh and Volkov [33] reported researchers [34][35][36] employing FBEs have also noted current efficiencies less than unity and its tendency to increase at higher currents. This has been attributed to corrosion of copper by oxygen generated at the anode [34,35] or by the development of anodic (i.e.…”

Section: Discussionmentioning

confidence: 89%

Electrochemical copper recovery from galvanic sludge

et al. 2016

View full text Add to dashboard Cite

The feasibility of recovering copper from electronic industrial waste mud (galvanic sludge) using a combination of leaching and electrowinning has been examined. Leaching with sulfuric acid was found to be the most efficient and cost-effective way of extracting the copper from the sludge, and the optimum acid concentration and time were determined. The copper was then extracted by electrowinning in a batch recirculation electrochemical reactor (Porocell™) employing a three-dimensional carbon felt cathode. The influence of applied current, flow rate and the presence of other metal ion contaminates on the rate and current efficiency of copper electrowinning was investigated. An analysis of the experimental data showed that the current efficiency was lower than unity even though the limiting current for copper deposition was not exceeded. This low current efficiency was attributed to the occurrence of a side reaction, most likely the reduction of dissolved oxygen or oxygen-induced corrosion. The influence of this side reaction can be minimized by operating at relatively high currents and low flow rates

show abstract