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Study on Mg2+ removal from ammonium dihydrogen phosphate solution by predispersed solvent extraction / JianHong Luo in Industrial & engineering chemistry research, Vol. 48 N°4 (Février 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - p. 2056–2060 Titre : Study on Mg2+ removal from ammonium dihydrogen phosphate solution by predispersed solvent extraction Type de document : texte imprimé Auteurs : JianHong Luo, Auteur ; Jun Li, Auteur ; Jin Yang, Auteur Année de publication : 2009 Article en page(s) : p. 2056–2060 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Mg2+  Predispersed  solvent  extraction  Aqueous  solution  Colloidal  liquid  aphrons Résumé : The predispersed solvent extraction (PDSE) is a new method for separating solutes from aqueous solution, and for its high extraction ratio, the PDSE presents huge potential for the extraction from dilute solution. In the present paper, colloidal liquid aphrons are successfully generated using kerosene as a solvent, di(2-ethylhexyl)phosphoric acid (D2EHPA) as an extractant, sodium dodecyl benzene sulfate (SDBS) as surfactant in the aqueous phase, and polyoxyethylene sorbitol anhydride monolaurate (Tween-20) in oil phase. The extraction of Mg2+ from ammonium dihydrogen phosphate solution is studied by using colloidal liquid aphrons (CLA) and colloidal gas aphrons (CGA) in a semibatch extraction column. To study the extraction ratio and advantages of the PDSE process in the removal of Mg2+, various parameters, initial Mg2+ concentration, D2EHPA volume fraction, reaction temperature, phase volume ratio, mass fractions of dodecyl trimethylammonium bromide (HTAB), mass fractions of SDBS, mass fractions of Tween-20, and initial pH of NH4H2PO4 solution, are studied and optimized. The results show that Mg2+ in NH4H2PO4 solution can be effectively removed by the PDSE process. An extraction ratio of more than 86.3% is attained at the optimized parameters, and superior-grade NH4H2PO4 (MAP) can be obtained by two levels of extraction. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801277t [article] Study on Mg2+ removal from ammonium dihydrogen phosphate solution by predispersed solvent extraction [texte imprimé] / JianHong Luo, Auteur ; Jun Li, Auteur ; Jin Yang, Auteur . - 2009 . - p. 2056–2060. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - p. 2056–2060 Mots-clés : Mg2+  Predispersed  solvent  extraction  Aqueous  solution  Colloidal  liquid  aphrons Résumé : The predispersed solvent extraction (PDSE) is a new method for separating solutes from aqueous solution, and for its high extraction ratio, the PDSE presents huge potential for the extraction from dilute solution. In the present paper, colloidal liquid aphrons are successfully generated using kerosene as a solvent, di(2-ethylhexyl)phosphoric acid (D2EHPA) as an extractant, sodium dodecyl benzene sulfate (SDBS) as surfactant in the aqueous phase, and polyoxyethylene sorbitol anhydride monolaurate (Tween-20) in oil phase. The extraction of Mg2+ from ammonium dihydrogen phosphate solution is studied by using colloidal liquid aphrons (CLA) and colloidal gas aphrons (CGA) in a semibatch extraction column. To study the extraction ratio and advantages of the PDSE process in the removal of Mg2+, various parameters, initial Mg2+ concentration, D2EHPA volume fraction, reaction temperature, phase volume ratio, mass fractions of dodecyl trimethylammonium bromide (HTAB), mass fractions of SDBS, mass fractions of Tween-20, and initial pH of NH4H2PO4 solution, are studied and optimized. The results show that Mg2+ in NH4H2PO4 solution can be effectively removed by the PDSE process. An extraction ratio of more than 86.3% is attained at the optimized parameters, and superior-grade NH4H2PO4 (MAP) can be obtained by two levels of extraction. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801277t