Abstract
The extraction of iron(III) with tributyl phosphate from bromide aqueous solutions in the electrochemical processing of natural waters and brines was studied. It was found that iron(III) is extracted from solutions of alkali metal bromides in the form of the complex salt MFeBr4 at a salt concentration of more than 4 M. Extraction increases in the series KFeBr4 < NaFeBr4 < LiFeBr4. Extraction products are largely susceptible to electrolytic dissociation in the organic phase. The optimal conditions for the extraction of iron(III) bromide and its return to the technological process are determined.
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The work was carried out according to the state budget project V.46.1.1 of basic research of the Siberian branch of the Russian Academy of Sciences “Physicochemical studies of the surface and interfacial processes, the development of the scientific foundations of highly effective and environmentally friendly technologies for processing natural and technogenic raw materials of non-ferrous, rare and noble metals and for the production of high-tech materials.”
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Kuz’min, D.V., Kuz’min, V.I., Gudkova, N.V. et al. Extraction of Iron(III) with Tributyl Phosphate from Bromide Solutions. Russ J Appl Chem 93, 238–243 (2020). https://doi.org/10.1134/S1070427220020123
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DOI: https://doi.org/10.1134/S1070427220020123