Uranium extraction from different acidic media using a novel solvent-impregnated resin

Mosleh, Mahmoud; El-Hakim, Elham H.; Ahmed, Anwar Z.; Abd El-Ghany, Mohamed S.; El-Didamony, Akram Mohamed

doi:10.21608/bfszu.2020.40456.1037

	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
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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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