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Selective Recovery of Indium from Acid Sulfate Media with Solvent Impregnated Resin of Bis(4-cyclohexylcyclohexyl)phosphoric Acid as an Extractant
Authors: T. Nakamura, T. Ikawa, S.
Nishihama, K. Yoshizuka
Affiliation: Department of Chemical Engineering, The University of Kitakyushu, Hibikino 1-1, Kitakyushu 808-0135, Japan
Published in: Ion Exch. Lett. 2010, 2(2), 22-26
Permanent link to this page: http://iel.vscht.cz/abstracts/1803-4039-02-0022.htm
Keywords: indium, zinc refinery residue, adsorption, D4DCHPA, solvent impregnated resin (SIR)
Abstract: The selective recovery of In3+ from the mixture of In3+, Ga3+, and Zn2+ was investigated in acidic sulfate media, employing a solvent impregnated resin (SIR). Bis(4-cyclohexylcyclohexyl)phosophoric acid (D4DCHPA) in toluene was impregnated into synthetic adsorbent based on methacrylic ester copolymer. The SIR has high selectivity for In3+, and the order of selectivity is In3+ > Ga3+ > Zn2+. The adsorption progresses via Langmuir mechanism and the maximum adsorption amounts of In3+, Ga3+, and Zn2+ are found to be 0.22, 0.22, and 0.14 mmol/g, respectively. The effective adsorption-elution can be achieved by the column operation, and In3+ can be selectively recovered from ternary metal solution.