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.
Similar content being viewed by others
References
J.D. Donaldson, S.M. Grimes and S.J. Clark, ‘Cobalt in Chemicals,’ Monograph series, Cobalt Development Institute (1986).
L. Rosato, G.B. Harris and R.W. Stanley, Hydrometallurgy 13 (1984) 34.
B.K. Tait, Hydrometallurgy 32 (1993) p. 365.
Li Longquan, Wang Cheng and Li Yadong, J. Mem. Sci. 135 (1997) 173.
M. Labbe, J.C. Fenyo, E. Selegny, Sep. Sci. 10 (1975) 307.
M. Kubal, T. Machula, N. Strnadova, Sep. Sci. Technol. 33 (1998) 1969-80.
A.T. Cherif, A. Elmidaoui and C. Gavach, J. Mem. Sci. 76 (1993) 39.
M.V. Rozhkova, V.A. Shaposhnik, I.P. Strygina and L.V. Artemova, Russ. J. Electrochem. 32 (1996) 237.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Chaudhary, A., Donaldson, J., Grimes, S. et al. Separation of nickel from cobalt using electrodialysis in the presence of EDTA. Journal of Applied Electrochemistry 30, 439–445 (2000). https://doi.org/10.1023/A:1003966132167
Issue Date:
DOI: https://doi.org/10.1023/A:1003966132167