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The separation and concentration of Cr(VI) from acidic dilute solution using hollow fiber renewal liquid membrane / Junteng Liu in Industrial & engineering chemistry research, Vol. 48 N° 9 (Mai 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4500–4506 Titre : The separation and concentration of Cr(VI) from acidic dilute solution using hollow fiber renewal liquid membrane Type de document : texte imprimé Auteurs : Junteng Liu, Auteur ; Zhang, Weidong, Auteur ; Zhongqi Ren, Auteur Année de publication : 2009 Article en page(s) : pp. 4500–4506 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Hollow  fiber  HFRLM  technique  Cr(VI)  Acidic  dilute  solution  Tri-n-butyl  phosphate Résumé : Hollow fiber renewal liquid membrane (HFRLM) technique for simultaneous separation and concentration of Cr(VI) from acidic dilute solution has been studied using tri-n-butyl phosphate as mobile carrier. The influences of the mobile carrier concentration, pH of the feed phase, the initial Cr(VI) concentration, and the stripping concentration on the mass transfer rate are investigated. The transport rate of Cr(VI) increases with increasing the carrier concentration and the stripping concentration, then reaches a “plateau”. The concentration factor as high as 25∼30 has been achieved easily. A mathematical model is proposed to explain the transport mechanism. The validity of this model is evaluated and good agreement between predicted results and experiment data are obtained. Results suggest that the HFRLM technique provides a promising alternative to treat industrial wastewater at low Cr(VI) concentration. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8017669 [article] The separation and concentration of Cr(VI) from acidic dilute solution using hollow fiber renewal liquid membrane [texte imprimé] / Junteng Liu, Auteur ; Zhang, Weidong, Auteur ; Zhongqi Ren, Auteur . - 2009 . - pp. 4500–4506. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4500–4506 Mots-clés : Hollow  fiber  HFRLM  technique  Cr(VI)  Acidic  dilute  solution  Tri-n-butyl  phosphate Résumé : Hollow fiber renewal liquid membrane (HFRLM) technique for simultaneous separation and concentration of Cr(VI) from acidic dilute solution has been studied using tri-n-butyl phosphate as mobile carrier. The influences of the mobile carrier concentration, pH of the feed phase, the initial Cr(VI) concentration, and the stripping concentration on the mass transfer rate are investigated. The transport rate of Cr(VI) increases with increasing the carrier concentration and the stripping concentration, then reaches a “plateau”. The concentration factor as high as 25∼30 has been achieved easily. A mathematical model is proposed to explain the transport mechanism. The validity of this model is evaluated and good agreement between predicted results and experiment data are obtained. Results suggest that the HFRLM technique provides a promising alternative to treat industrial wastewater at low Cr(VI) concentration. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8017669