Journal of Nuclear Energy Science & Power Generation TechnologyISSN: 2325-9809

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Separation of Vanadium Using Dispersive Liquid-Liquid Extraction

In this study, the conditions of vanadium separation from wastewater by dispersive liquid-liquid extraction in batch and continuous states have been investigated. The best extractant solvents and dispersive or diluents have been selected and then the effect of pH and, the best time of separation have been optimized. Also, effect of foreign ions was tested and at last vanadium of wastewater has been extracted by Di-(2- ethylhexyl) phosphoric acid and amines (Tri-C8-C10–alkyl amine). The results show that amines better than Di-(2- ethylhexyl) phosphoric acid in the present foreign ions can extract vanadium. Under the best optimized conditions, the extraction amounts increased from 34.67% to 92.7%. Methanol with Di-(2-ethylhexyl) phosphoric acid is the best dispersive solvent for extraction of vanadium and, acetonitrile is as a dispersive solvent for amines. Diagram of the McCabe-Thiel shows nine theoretical stages at flow ratio of 0.5:5 (organic to aqueous) with a residence time of about 100s need for yield 90%.

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