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Solvent Extraction of Cobalt Chloride from Strong Hydrochloric Acid Solutions by Alamine336  

Lee, Man-seung (Department of Advanced Materials Science & Engineering, Mokpo National University)
Lee, Jin-Young (Division of Minerals Utilization and Materials, Korea Institute of Geoscience and Mineral Resources)
Publication Information
Korean Journal of Metals and Materials / v.46, no.4, 2008 , pp. 227-232 More about this Journal
Abstract
Solvent extraction reaction of cobalt by Alamine336 from strong hydrochloric acid solution was identified by analyzing the solvent extraction data reported in the literature. Analysis of the data by graphical method revealed that Alamine336 took part in the solvent extraction reaction as a monomer in the concentration ranges, [Co(II)] : 0.0169 - 0.102 M, [Alamine336] ; 0.02- 1.75 M, and [HCl ] : 5 - 10 M. The following solvent extraction reaction and equilibrium constant was obtained from the experimental data by considering the activity coefficients of chemical species present in the aqueous phase. $Co^{2+}+2Cl^{-}+R_3NHCl_{org}=CoCl_3\;R_3NH_{org}$, $K_{ex}=2.21$ The distribution coefficients of cobalt predicted in this study agreed well with those reported in the literature.
Keywords
$CoCl_2$; HCl; Alamine336; solvent extraction reaction; equilibrium constant;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
Times Cited By Web Of Science : 3  (Related Records In Web of Science)
Times Cited By SCOPUS : 4
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