| Titre : | Preparation of novel emulsion gel adsorbents and their adsorption properties for heavy-metal ions (2011) |
| Auteurs : | Hideaki Tokuyama, Auteur ; Takuro Yoshida, Auteur ; Liangliang He, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 50 N° 17, Septembre 2011) |
| Article en page(s) : | pp. 10270-10277 |
| Note générale : | Chimie industrielle |
| Langues : | Anglais |
| Tags : | Metal ion Heavy metal Adsorption Emulsion Preparation |
| Résumé : | Novel emulsion gel adsorbents were developed for metal adsorption. Poly[poly(ethylene glycol) methyl ether acrylate] [poly(PEGMEA)] was used as a nonionic hydrophilic polymer, and 2-ethylhexylphosphoric acid mono-2-ethylhexyl ether (EHPNA) was used as an organophosphorus extractant for rare metal ions. Poly(PEGMEA) hydrogel containing randomly distributed oil microdroplets of EHPNA were prepared by the emulsion-gelation method using oil-in-water emulsions under various monomer concentrations, oil volume fractions, and surfactant concentrations. The emulsion gel successfully adsorbed In(III) ions used as a representative metal. Mutual separation of In(III) and Zn(II) ions and repeated adsorption were successful because of the pH dependence of the metal-extractant complexation. The emulsion gel has a higher degree of compressive deformation and abrasion resistance than a conventional (nonemulsion) hydrogel and shows potential for use in practical separations. |
| DEWEY : | 660 |
| ISSN : | 0888-5885 |
| En ligne : | http://cat.inist.fr/?aModele=afficheN&cpsidt=24483671 |
