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Indian Journal of Advances in Chemical Science, Volume: 10,
Issue : 3, August 2022 |
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ISSN No.: 2320-0898 (Print);
2320-0928 (Electronic)
DOI: 10.22607/IJACS.2022.1003001 |
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Research Article
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Extraction
Equilibria of Cobalt (II) with 3-Hexylaminopyridine in Kerosene from
Aqueous Solution in Chloride Media |
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Maroti V. Kanetkar*, Jivan M. Kondare,
Gopal K. Kakade |
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ABSTRACT |
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Extraction equilibria of cobalt (II)
from aqueous chloride solutions with 3-hexylaminopyridine (3-HAP)
dissolved in kerosene was investigated. Results showed that KCl salt
can greatly improve the cobalt (II) extraction efficiency. The
distribution coefficients were significantly dependent on the
concentration of chloride ions and the pH value in the aqueous phase
because of mechanism of extraction and complex formation in the
organic phase. With initial pH value of pH 1–2 and chloride ion
concentration 1.0 mol L−1, the maximum extraction (>90%)
was observed. In addition, 2.0 mol L−1–2.5 mol L−1
concentrations of hydrochloric acid in aqueous phase increase the
extraction efficiency. Extraction equilibrium by 3-HAP with cobalt
(II) was established within 10 min.
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Key words: 3-Hexylaminopyridine, Extraction equilibria,
Cobalt (II), Kerosene. |
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