Simultaneous separation of uranium and fluoride ions from aqueous solution by utilizing electrodialysis method
Paper ID : 1339-MST2015-FULL
Authors:
Amir charkhi *1, Soheila Joshaghani2, Amir saeed Shirani3, Adib Zaheri4, Alireza Keshtkar5
1Nuclear Fuel cycle school, Nuclear Science and technology Research institute
2Department of Nuclear Engineering, Shahid Beheshti University
3Shahid beheshti university
4Nuclear Fuel cycle school,Nuclear Science and technology Research institute
5Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, AEOI, P.O.Box: 11365-8486, Tehran- Iran
Abstract:
The simultaneous separation of uranium and fluoride ions from an aqueous solution was studied by utilizing the electrodialysis method. In this study, the cationic membrane was a synthetic nonhomogeneous membrane containing 65 wt% of milled Dowex 50W-X8 resin and 8 wt% of nano TiO2 in the matrix of polyvinylchloride and the anionic membrane was commercial. The effect of various parameters including applied voltage in the range of 10-30 volt, feed flow rate in the range of 5-15 ml/min and uranium and fluoride initial concentration in the range of 10-500 ppm on the performance of electrodialysis method were investigated. Results indicated that decrease in the feed flow rate and initial concentration of ions as well as increase in the applied voltage lead to decrease the separation percentage of both ions. At the optimum conditions separation percentage of the uranium and fluoride ions were measured about 91 and 77%. Finally, the results of this study revealed that the electrodialysis may be a good chose as a pretreatment method to prepare a concentrated uranium aqueous solution that is free of interfering fluoride ions and appropriate for further treatment by extraction method
Keywords:
separation, fluoride, uranium, electrodialysis
Status : Conditional Accept (Poster)