Uranium extraction from different acidic media using a novel solvent-impregnated resin | ||
| Bulletin of Faculty of Science, Zagazig University | ||
| Articles in Press, Accepted Manuscript, Available Online from 17 October 2020 | ||
| Document Type: Original Article | ||
| DOI: 10.21608/bfszu.2020.40456.1037 | ||
| Authors | ||
| Mahmoud Mosleh* 1; Elham H. El-Hakim2; Anwar Z. Ahmed2; Mohamed S. Abd El-Ghany3; Akram Mohamed El-Didamony4 | ||
| 1Chemistry Department, Faculty of Science, Zagazig University | ||
| 2Nuclear Metallurgy Department, Nuclear Research Center, Atomic Energy Authority | ||
| 3Production Sector, Nuclear Materials Authority | ||
| 4Department of Chemistry, Zagazig University | ||
| Abstract | ||
| In present study, uranium (VI) extraction from different acidic media (e.g. H2SO4, HCl and HNO3 aqueous solutions) using tri-n-octylamine (TOA) impregnated into Siplite LX-16 polymeric resin has been investigated using batch experiments. The extraction parameters including aqueous pH, free acidity, salting-out agent addition, initial uranium concentration, volume of aqueous solution to weight of the impregnated resin (v/w) ratio and the phases contact time have been studied. Batch adsorption studies reveal that the prepared TOA/Siplite LX-16 has a significant capacity for the adsorption of U(VI) from aqueous solutions. The maximum sorption capacity of U(VI) from sulfate solution onto the working resin was 92.74 mg/g at an optimum pH range from 1.4 to 1.6. Quantitative desorption of the extracted uranium has successfully been achieved using 0.75 M NaCl acidified with 0.15 M HCl solution. Finally, a complete precipitation of uranium from the eluate solution was attained by hydrogen peroxide precipitation at pH 2. | ||
| Keywords | ||
| U(VI) extraction; Tri-n-octylamine; Siplite LX-16; Acidic solutions | ||
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