Lanthanide recovery by silica-Cyanex 272 material immobilized in alginate matrix.
Fiche publication
Date publication
mai 2020
Journal
Environmental science and pollution research international
Auteurs
Membres identifiés du Cancéropôle Est :
Dr BOOS Anne
Tous les auteurs :
Mohammedi H, Miloudi H, Boos A, Bertagnolli C
Lien Pubmed
Résumé
Mesoporous silica impregnate with Cyanex 272 (bis/2,4,4-trimethylpentyl/phosphinic acid) extractant was immobilized into an alginate matrix to obtain a composite sorbent easy to use and applicable in fixed-bed column continuous systems. The sorption efficiency of this material was tested for the recovery of Eu(III) ions from aqueous solutions in batch and continuous mode. The competition among rare earths ions (europium, lanthanum, and lutetium) and among rare earths and calcium or sodium ions was investigated. High calcium concentrations strongly reduce the sorption capacity of the alginate matrix that composes the hybrid material and the Cyanex 272 impregnated into silica powder improves the rare earths' sorption performance in this calcium charged media. The experimental breakthrough curves obtained were satisfactory fitted by Thomas model.
Mots clés
Adsorption, Competitive lanthanide sorption, Cyanex 272, Fixed-bed, MCM-41
Référence
Environ Sci Pollut Res Int. 2020 May 8;: