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Effect of a water‐insoluble organic acid on amine extraction of acetic acid from aqueous solutions. Equilibrium studies
Author(s) -
Juang RueyShin,
Wu RongTzong
Publication year - 1996
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(199606)66:2<160::aid-jctb485>3.0.co;2-z
Subject(s) - aqueous solution , acetic acid , extraction (chemistry) , chemistry , amine gas treating , organic chemistry , chromatography , inorganic chemistry
The effect of a water‐insoluble organic acid, di(2‐ethylhexyl)phosphoric acid (D2EHPA), on the extraction equilibrium of acetic acid from aqueous media with xylene solutions of tri‐ n ‐octylamine (TOA) was systematically investigated. In the absence of D2EHPA, the formulation of the extracted species in the organic phase and equilibrium constants for the formation of these species were numerically determined. Synergistic and antagonistic effects on the extraction of acetic acid were observed in the presence of D2EHPA, mainly depending on the concentration of TOA and the concentration ratio of D2EHPA to TOA. Finally, the influence of temperature on the extraction of acetic acid with TOA and/or D2EHPA was investigated.