Preparation of Novel Emulsion Gel Adsorbents and Their Adsorption Properties for Heavy-Metal Ions

Autor:	Hideaki Tokuyama, Liangliang He, Takuro Yoshida
Rok vydání:	2011
Předmět:	Acrylate General Chemical Engineering Metal ions in aqueous solution Inorganic chemistry Ether General Chemistry Industrial and Manufacturing Engineering chemistry.chemical_compound Monomer Adsorption chemistry Pulmonary surfactant Emulsion Ethylene glycol Nuclear chemistry
Zdroj:	Industrial & Engineering Chemistry Research. 50:10270-10277
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie201179n
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4b67507b1e250bf453d538e33f9af7a9 https://doi.org/10.1021/ie201179n Zobrazit plný text záznamu