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Titre: A new sorbent for europium nitrate extraction: phosphonic acid grafted on polystyrene resin
Auteur(s): ABDERRAHIM, Omar
FERRAH, Nacer
DIDI, Mohamed Amine
VILLEMIN, Didier
Mots-clés: Solid phase extraction
Ion exchange resin
Europium(III)
Supported phosphonic acid
Date de publication: nov-2011
Résumé: A new chelating polymeric sorbent has been developed using polystyrene resin grafted with phosphonic acid. After characterization by FTIR and elementary analysis, the new resin has been investigated in liquid–solid extraction of europium(III). The results indicated that phosphonic resin could adsorb Eu(III) ion effectively from aqueous solution. The adsorption was strongly dependent on pH of the medium with enhanced adsorption as the pH value of 6.5. The influence of other analytical parameters including contact time, amount of resin, metal ion concentration, and ionic strength were investigated. The maximum uptake capacity of Eu(III) ions was 122.6 mg/g grafted resin at ambient temperature, at an initial pH value of 6.50. The overall adsorption process was best described by pseudo first-order kinetic. When Freundlich and Langmuir isotherms were tested, the latter had a better fit with the experimental data. Furthermore, Eu(III) could be eluted by using 1.0 mol/L H2SO4 solution and the grafted resin could be regenerated and reused.
Description: Journal of Radioanalytical and Nuclear Chemistry, ISSN : 0236-5731, DOI: 10.1007/s10967-011-1243-3, Issue : 2, Volume : 290, pp. 267-275, NOV 2011.
URI/URL: http://dspace.univ-tlemcen.dz/handle/112/1786
ISSN: 0236-5731
Collection(s) :Articles internationaux

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