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Extraction equilibria of propionic acid from aqueous solutions by Amberlite LA-2 in diluent solvents / Yavuz Selim Asci in Chemical engineering journal, Vol. 155 N° 3 (Decembre 2009) 

Public ISBD [article]  in Chemical engineering journal > Vol. 155 N° 3 (Decembre 2009) . - pp. 784-788 Titre : Extraction equilibria of propionic acid from aqueous solutions by Amberlite LA-2 in diluent solvents Type de document : texte imprimé Auteurs : Yavuz Selim Asci, Auteur ; Ismail Inci, Auteur Année de publication : 2010 Article en page(s) : pp. 784-788 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Extraction  Propionic  acid  Amberlite  LA-2 Index. décimale : 660 Résumé : Amberlite LA-2 (a secondary amine) was studied for its ability to extract propionic acid at different amine concentrations. The extraction of propionic acid by Amberlite LA-2 dissolved in seven single solvents (cyclohexane, 2-octanone, toluene, methyl isobutyl ketone, isooctane, haxane and 1-octanol) was investigated under various amine concentrations at 298.15 K. Using Bizek's approach, two acids: amine complexes, (HO):(R2N) and (HO):(R2N)2, are assumed to exist in the organic phase in case of proton-donating diluents, while the complexes (HO):(R2N) and (HO)2:(R2N)3 are suggested in the case of non-proton-donating diluents. Important data for design of separation units have been obtained as a result of batch experiments. These data are distribution coefficients (D), loading factors (Z), extraction efficiency (E) and overall extraction constants (K11, K12, K23). The maximum removal of glycolic acid is 94.68% with MIBK and 0.93 mol L−1 initial concentration of Amberlite LA-2. DEWEY : 660 ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TFJ-4X97D48-1&_user=6 [...] [article] Extraction equilibria of propionic acid from aqueous solutions by Amberlite LA-2 in diluent solvents [texte imprimé] / Yavuz Selim Asci, Auteur ; Ismail Inci, Auteur . - 2010 . - pp. 784-788. Génie Chimique Langues : Anglais (eng) in Chemical engineering journal > Vol. 155 N° 3 (Decembre 2009) . - pp. 784-788 Mots-clés : Extraction  Propionic  acid  Amberlite  LA-2 Index. décimale : 660 Résumé : Amberlite LA-2 (a secondary amine) was studied for its ability to extract propionic acid at different amine concentrations. The extraction of propionic acid by Amberlite LA-2 dissolved in seven single solvents (cyclohexane, 2-octanone, toluene, methyl isobutyl ketone, isooctane, haxane and 1-octanol) was investigated under various amine concentrations at 298.15 K. Using Bizek's approach, two acids: amine complexes, (HO):(R2N) and (HO):(R2N)2, are assumed to exist in the organic phase in case of proton-donating diluents, while the complexes (HO):(R2N) and (HO)2:(R2N)3 are suggested in the case of non-proton-donating diluents. Important data for design of separation units have been obtained as a result of batch experiments. These data are distribution coefficients (D), loading factors (Z), extraction efficiency (E) and overall extraction constants (K11, K12, K23). The maximum removal of glycolic acid is 94.68% with MIBK and 0.93 mol L−1 initial concentration of Amberlite LA-2. DEWEY : 660 ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TFJ-4X97D48-1&_user=6 [...]