Solvent Extraction of Vanadium (V) from Phosphate Solutions with Trioctylmethylammonium Chloride (TOMAC)

Abstract

Different experimental conditions that could affect the extraction of vanadium (V) were investigated. These include acid concentration, metal ion concentration, extractant concentration, temperature, mixing of extractants, extraction stages and addition of foreign ions. TOMAC was found to be more efficient at lower acid concentration (1M). Optimum extraction conditions were reached at 38 0 C and the use of TOMAC proved to be synergistic with the addition 2.5% TOPO. The infrared and UV-visible spectra data were used to propose VO 2 H 2 PO 4 .nTOMAC as the stoichiometry for the organic extract.