A new sorbent for uranium extraction: ethylenediamino tris(methylenephosphonic) acid grafted on polystyrene resin |
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| Authors: | Abdelhakim Kadous Mohamed Amine Didi and Didier Villemin |
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| Institution: | (1) Laboratory of Separation and Purification Technologies, Department of Chemistry, Tlemcen University, Box 119, Tlemcen, Algeria;(2) Laboratoire de Chimie Mol?culaire et Thio-organique, UMR CNRS 6507, INC3M, FR 3038, ENSICAEN & Universit? de Caen, 14050 Caen, France; |
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| Abstract: | A new chelating polymeric sorbent has been developed using polystyrene resin grafted with ethylenediamino tris(methylenephosphonic)
acid. After characterisation by FTIR and elementary analysis, the new grafted resin has been investigated in liquid–solid
extraction of uranium(VI). The influence of analytical parameters including pH, amount of resin, metal ion concentration,
sample volume and ionic strength were investigated on the recovery of U(VI). Adsorption kinetic and isotherm studies were
also carried out to understand the nature of the sorption of uranium(VI) by the resin. The total sorption capacity was found
to be 41.76 mg/g under optimum conditions. The total desorption of the sorbed uranium ions was successfully performed with
0.1 M ammonium carbonate. Further, the effect of temperature was realized and the thermodynamic parameters were calculated. |
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