Equilibria of Co(II) and Ni(II) extraction from sulphate solutions with Cyanex 301

• Autorzy: Gajda B. , Apostoluk W.
• Języki publikacji: EN

Abstrakty

EN

The extraction equilibria of Co(II) and Ni(II) extraction from the sulphate solutions with di(2,4,4-trimethylpentyl)dithiophosphinic acid (Cyanex 301) dissolved in an aliphatic kerosene have been studied. The obtained results prove that the stoichiometry of Co(II) and Ni(II) complexes extracted with Cyanex 301 (HA) corresponds to the following formulae CoA2(HA)2 and NiA2(HA)4, respectively.The logarithmic values of corresponding extractions constants (log Kex,Co and log Kex,Ni) are equal to 2.47±0.03 and 4.73±0.02, respectively. The observed changes of electronic absorption spectra of the organic phases containing cobalt complexes have been attributed to the oxidation of Co(II) in contact with air.

Słowa kluczowe

EN

di(2,4,4-trimethylpentyl)dithiophosphinic acid; extraction equilibria; cobalt(II); nickel(II)

• Wydawca: Faculty of Chemical Technology and Engineering, University of Technology and Life Sciences, Bydgoszcz
• Czasopismo: Ars Separatoria Acta
• Rocznik: 2002
• Tom: No. 1
• Strony: 55--60
• Opis fizyczny: Bibliogr. 5 poz., rys.

Twórcy

autor

Gajda B.

• Department of Metallurgy and Material Engineering, Technical University of Czestochowa, Armii Krajowej 19, 42-200 Czestochowa, Poland

autor

Apostoluk W.

• Institute of Inorganic Chemistry and Metallurgy of Rare Elements, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland

Bibliografia

• [1] K. C. Sole, J. B. Hiskey, Hydrometallurgy 1992, 30, 345-365.
• [2] S. Facon, M. Avila Rodriguez, G. Cote, D. Bauer, ISEC’93, Solvent Extraction in the Process Industries, D.H. Logsdail & M.J. Slater Eds., SCI-Elsevier, London, 1993, vol. I, pp. 557-564.
• [3] B. Menoyo, M. P. Elizalde, Solvent Extr. Ion Exch. 1997, 15, 563-576.
• [4] R. Singh, A. R. Khwaja, G. Gupta, S. N. Tandon, Solvent Extr. Ion Exch. 1997, 17, 367-390.
• [5] K. Tait, Hydrometallurgy 1993, 32, 365-372.