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Ionic Equilibria and Comparison of Solvent Extraction of Cobalt(II) and Manganese(II) from HCl Solution by Alamine336  

Lee, Man-Seung (Department of Advanced Materials Science & Engineering, Mokpo National University)
Shin, Shun-Myung (Division of Minerals Utilization and Materials, Korea Institute of Geoscience and Mineral Resources)
Publication Information
Resources Recycling / v.19, no.4, 2010 , pp. 29-34 More about this Journal
Abstract
Distribution diagram of $CoCl_2$ and $MnCl_2$ was obtained by analyzing ionic equilibria of the two metals in HCl solution. In the HCl concentration range of 4 and 10 M, most of cobalt exists as $CoCl_2$, whereas Mn exists $MnCl_{3}^-$ and $MnCl_2$. Extraction isotherm of Co(II) and Mn(II) was calculated by using the equilibrium constant for the solvent extraction of the two metals by Alamine336. Although the equilibrium constant for the solvent extraction of Mn was higher than that of Co, extraction isotherm indicated that cobalt could be extracted more efficiently than manganese at the same initial extraction conditions.
Keywords
Co(II); Mn(II); HCl; ionic equilibria; extraction isotherm;
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Times Cited By KSCI : 3  (Citation Analysis)
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