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http://dx.doi.org/10.7844/kirr.2015.24.3.3

Separation of Copper & Cobalt by Solvent Extraction in Organic Acid Leaching Solution  

Kim, Tae-Young (Dept. of Advanced Materials Sci. & Eng., Daejin University)
Ryu, Seong-Hyung (Dept. of Advanced Materials Sci. & Eng., Daejin University)
Ahn, Jae-Woo (Dept. of Advanced Materials Sci. & Eng., Daejin University)
Publication Information
Resources Recycling / v.24, no.3, 2015 , pp. 3-10 More about this Journal
Abstract
A study has been made on the recovery & separation of cobalt and copper from organic acid leaching solution by solvent extraction. The experimental parameters such as the equilibrium pH, concentration of extractant and phase ratio were observed. Copper was extracted using LIX 84 and Cobalt was extracted using cyanex 272 and versatic acid 10. Experimental results showed that extraction percent of copper was 99% at above eq. pH 2.0 and then more than 90% of cobalt were extracted by cyanex 272 in eq. pH 6.0 and versatic acid 10 in eq. pH 7.5. Stripping of copper and cobalt from the loaded organic phases can be accomplished by sulfuric acid as a stripping reagent and 120 ~ 150 g/L of $H_2SO_4$ was effective for the stripping of copper and cobalt respectively. Finially, the basic optimal process for recovery of copper and cobalt from the bio-leaching solution was proposed.
Keywords
Solvent extraction; Copper; Cobalt; Separation; Organic acid;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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