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Journal of Applied Electrochemistry

, Volume 30, Issue 4, pp 439–445 | Cite as

Separation of nickel from cobalt using electrodialysis in the presence of EDTA

  • A.J. Chaudhary
  • J.D. Donaldson
  • S.M. Grimes
  • N.G. Yasri
Article

Abstract

Optimum conditions are determined for the removal of nickel from cobalt solutions by electrodialysis exploiting the greater stability of the EDTA complex with nickel. The Ni–(EDTA)2− complex and hydrated Co2+ ions are transferred from the feed solution to the electrodialysis anolyte and catholyte chambers, respectively. A three compartment cell is required to prevent the transfer of hydrated Ni2+ from the anolyte chamber as the EDTA present is destroyed at the anode. Complete removal of nickel from cobalt can be achieved but there is a compromise between cobalt purity and the percentage of cobalt transferred to the catholyte chamber for recovery.

cobalt EDTA electrodialysis nickel separation 

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Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • A.J. Chaudhary
    • 1
  • J.D. Donaldson
    • 1
  • S.M. Grimes
    • 1
  • N.G. Yasri
    • 1
  1. 1.Centre for Environmental Research, Department of Materials EngineeringBrunel UniversityUxbridgeGreat Britain

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