Abstract
In this work, 2-ethyl-1-hexanol, a long chain alcohol, is used to extract pentavalent vanadium V(V) from both sodium metavanadate solution and a synthetic leach liquor. At first, effects of process parameters on the extraction of V(V) from a solution free from the other metals are examined and discussed. The maximum extraction yield has been achieved at initial pH (pH0) about 2.0. Moreover, the influences of the concentration of extracting reagent, initial vanadium concentration, and organic/aqueous (O/A) phase ratio on the extraction are investigated. Subsequently, recovery of V(V) from a synthetic leach solution in the presence of Fe(III), U(VI), Si(IV), and Al(III) was explored. Under the extraction conditions of initial pH of 1.9, 2-ethyl-1-hexanol concentration of 70 v/v%, extraction temperature of 60 °C, and phase ratio (O/A) of 2/1; about 93% of V(V) was extracted while the extraction of the other coexisting metals was lower than 8%. The present results showed that 2-ethyl-1-hexanol is a suitable solvent for the selective separation of V(V) from the acidic sulfate solutions. Moreover, a method for the stripping and precipitation of the V(V) compound was proposed to achieve the complete recovery of vanadium. The presented method led to the selective stripping of V(V) from the organic phase and its complete precipitation in the form of ammonium metavanadate.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
