Extraction of uranium(VI) by tri iso-amyl phosphate (TiAP) in ionic liquids |
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Authors: | Nirvik Sen K. Saswani K. K. Singh S. Barkade S. Mukhopadhyay S. M. Chavan Sk. M. Ali K. T. Shenoy |
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Affiliation: | 1.Chemical Engineering Division,Bhabha Atomic Research Centre,Mumbai,India;2.Sinhgad College of Engineering,Pune,India |
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Abstract: | Batch extraction of uranium(VI) from uranyl nitrate solutions using TiAP in ionic liquids ([BMIM]PF6 and [HMIM]PF6) is studied. Effects of acidity, TiAP concentration in ionic liquid and temperature on distribution coefficient are studied. Results show that distribution coefficient increases with an increase in acidity and reduces with an increase in the alkyl chain length of the cation of the ionic liquid. Extraction of uranium(VI) by TiAP-[HMIM]PF6 system is found to involve two molecules of the extractant per metal ion and extraction is found to change from being exothermic to endothermic as the percentage of the extractant is increased. |
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