Abstract
The extraction properties of 1-(2-neononylamidoethyl)-2-neononyl-2-imidazoline hydrochloride (with chloroform as diluent) in Ga(III) recovery from hydrochloric acid solutions were studied. The acid concentration range (5–10 M HCl) for the efficient extraction and selective separation of Ga(III) from In(III), Al(III), and Fe(II) was determined. The concentration constants and thermodynamic parameters of the anion-exchange extraction of Ga(III) from 5 M HCl solutions were calculated. The optimum stripping agents for Ga(III) and Zn(II) are the solutions of 0.5 and 0.1 M HCl, respectively. It is proposed to use the extractant in a hydrometallurgical scheme of processing a spent semiconductor material containing Ga(III), In(III) and Zn(II) oxides, for the selective separation of Ga(III) and Zn(II) from In(III) at the acidity of the leaching solution 5 M HCl.
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ACKNOWLEDGMENTS
The authors are grateful to the Chemistry Center for Shared Use, Ufa Institute of Chemistry, Ufa Federal Research Center, Russian Academy of Sciences and to the Agidel Regional Center for Shared Use, Ufa Federal Research Center, Russian Academy of Sciences for recording the IR and NMR spectra and performing the elemental analysis of the compounds.
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The study was performed within the framework of government assignment no. 122031400246-1.
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Translated from Zhurnal Prikladnoi Khimii, No. 7, pp. 902–909, July, 2022 https://doi.org/10.31857/S004446182207009X
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Anpilogova, G.R., Bondareva, S.O. & Golubyatnikova, L.G. Extraction Properties of 1-(2-Neononylamidoethyl)-2-neononyl-2-imidazoline Hydrochloride in Gallium(III) Recovery from Hydrochloric Acid Solutions. Russ J Appl Chem 95, 996–1003 (2022). https://doi.org/10.1134/S1070427222070102
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DOI: https://doi.org/10.1134/S1070427222070102