Extraction Recovery of Vanadium(V) by Amines


The extraction of vanadium (V) by N-(2-hydroxy-5-nonylbenzyl)-β, β- dihydroxyethylamine was studied depending on different factors, such as pH of the medium, concentration of extracting agent, temperature and solvent type. This allowed the optimal extraction conditions to be determined. It was shown that extraction of vanadium (V) takes place with high distribution coefficients, and a complex containing a decavanadate anion and four molecules of the extractant is formed in the organic phase. The extracted vanadium (V) complex with amine is stable for more than one month.

Keywords: extraction, vanadium, distribution coefficient, infrared spectroscopy

[1] Kurbatova, L. D., et al. (2012). Extraction of Vanadium (IV) by di-2-ethylhexylphosphoric Acid. Phosphorus, Sulfur, and Silicon and the Related Elements, vol. 187, issue 9, pp. 1032-1037.

[2] Khyarsing, I. V. and Fillipov, A. P. (1988). Formation of Vanadium (IV) Complexes with Sulfate Ions in Acidic Aqueous Medium. Zhurnal neorganicheskoi khimii, vol. 33, issue 4, pp. 900-904.

[3] Ivakin, A. A., et al. (1986). Potentiometric Study of Ionic Equilibria of Vanadium (V). Zhurnal neorganicheskoi khimii, vol. 31, issue 2, pp. 388-392.

[4] Fedotov,M.A.(2009).NuclearMagneticResonanceinInorganicandCoordinationChemistry(Solutions And Liquids). Moscow: Fizmatlit, p. 329.

[5] Kurbatova, L. D., et al. (2015). Examination of Extraction of Vanadium (V) by Trioctylamine from Sulfuric Solutions. Zeitschrift fur Annorganische und Algemeine Chemie, vol. 641, issue 3-4, pp. 617-621.

[6] Nakamoto, K. (1969). Infrared Spectra of Inorganic and Coordination Compounds. Moscow: Mir, p. 412.

[7] Shmidt, V. S. (1970). Extraction by Amines. Moscow: Atomizdat, p. 312.