Indium Extraction from Sulfate Solutions with a Mixture of Di(2-Ethylhexyl)Phosphoric Acid and Octyl Alcohol

Indium Extraction from Sulfate Solutions with a Mixture of Di(2-Ethylhexyl)Phosphoric Acid and Octyl Alcohol Full article

Journal

Solvent Extraction and Ion Exchange
ISSN: 0736-6299 , E-ISSN: 1532-2262

Output data

Year: 2023, Volume: 41, Number: 4, Pages: 515-530 Pages count : 16 DOI: 10.1080/07366299.2023.2197016

Tags

Sulfate solutions; indium; solvent extraction; di(2-ethylhexyl)phosphoric acid; octyl alcohol

Authors

Fleitlikh Isaac ¹ , Grigorieva Natalya ¹ , Tikhonov Alexey ² , Krasnov Vyacheslav ² , Karpova Elena ² , Logutenko Olga ³

Affiliations

1	Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, Russia
2	N.N. Vorozhtsov Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
3	Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia

In this work, solvent extraction of In(III) from sulfate solutions by using mixtures of D2EHPA with octyl alcohol and octanoic acid was investigated. The introduction of the additives into the organic phase was shown to lead to an antagonistic effect thus facilitating efficient indium stripping from the loaded organic phase. The antagonistic effect is significantly higher in the D2EHPA (HR) and octyl alcohol (HA) mixtures. The formation of stable associates between D2EHPA and HA leads to a decrease in the extraction efficiency of indium. In the presence of alcohol, almost complete stripping of indium from a D2EHPA loaded phase can be achieved to produce a strip liquor containing>33.0 g/L In. Based on the analysis of the extraction data and by using nuclear magnetic resonance (NMR) and infrared (IR) spectroscopy of the organic phases, it was concluded that indium extraction with D2EHPA in octyl alcohol is due to the formation of the extracted compound InR3. The equilibrium constant (logK) for indium extraction with solutions of D2EHPA in octyl alcohol was found to be − 0.12 ± 0.05. Extraction systems containing D2EHPA and octyl alcohol can be used to recover indium from various industrial solutions, in particular from the solutions derived from lead-zinc production and from liquid crystal display panel wastes.

Fleitlikh I. , Grigorieva N. , Tikhonov A. , Krasnov V. , Karpova E. , Logutenko O.
Indium Extraction from Sulfate Solutions with a Mixture of Di(2-Ethylhexyl)Phosphoric Acid and Octyl Alcohol
Solvent Extraction and Ion Exchange. 2023. V.41. N4. P.515-530. DOI: 10.1080/07366299.2023.2197016 WOS РИНЦ

Published online:

Apr 10, 2023

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