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- Title
Interfacial Separation of Organic Phase Components in Systems Containing Aqueous Colloidal Solutions of Sodium Di-(2-Ethylhexyl)Phosphate.
- Authors
Kuzmin, V. I.; Leskiv, M. N.; Peterson, I. V.; Kuzmin, D. V.; Gudkova, N. V.; Bulavchenko, A. I.
- Abstract
Interfacial separation of components of extractants based on di-(2-ethylhexyl)phosphoric acid (di-2EHPA) in toluene and a mixture of di-2EHPA with trioctylamine in toluene has been studied in the course of treatment with aqueous sodium hydroxide solutions yielding an organic phase and an aqueous colloidal solution of di-2EHPA sodium salt. Conditions have been found for the isolation of almost pure di-2EHPA and toluene, as well as di-2EHPA and a trioctylamine solution in toluene. The aqueous colloidal solutions have been studied by conductometry, dynamic light scattering, and 1H-NMR spectroscopy. The considered systems are promising to be used in hydrometallurgy for improving parameters of extraction of metals and their concentrating in re-extracts.
- Publication
Colloid Journal, 2021, Vol 83, Issue 1, p88
- ISSN
1061-933X
- Publication type
Article
- DOI
10.1134/S1061933X21010075