Yazawa International Symposium: Metallurgical and Materials Processing: Principles and Techologies; Aqueous and Electrochemical Processing

Juan Patricio Ibáñez, Cristian Gutiérrez, Luis Cifuentes

Research output: Contribution to conferencePaper

4 Citations (Scopus)

Abstract

Separation of arsenic and copper from Cu-As-H2SO4 electrolytes by electrodialysis has been investigated at room temperature. The effects of current density and pH were studied. An arsenic-free copper solution was obtained for all the tested conditions. The transport efficiency for copper ions was found to be higher than 98% after 3 hours' test. Transport of arsenic and copper through the ion exchange membranes was increased by increasing pH and current density. Solution pH was found to be a key parameter for the separation process, since it controls the speciation of the ions to be transported and the formation of unwanted precipitates which reduce the global efficiency of the electrodialysis process. The main conclusion is that electrodialysis is a promising technique to be used in separating and/or concentrating ions of interest in copper electrometallurgy.
Original languageEnglish
Pages117-125
Number of pages9
Publication statusPublished - 16 Oct 2003
Externally publishedYes
Eventconference -
Duration: 16 Oct 2003 → …

Conference

Conferenceconference
Period16/10/03 → …

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