title: Kinetics of the extraction of succinic acid with tri-n-octylamine in 1-octanol solution.
abstract: Kinetic studies for the extraction of succinic acid from aqueous solution with 1-octanol solutions of tri-n-octylamine (TOA) were carried out using a stirred cell with a microporous hydrophobic membrane. The interfacial concentrations of species were correlated and thus the intrinsic kinetics was obtained. The overall extraction process was controlled by the chemical reaction at or near the interface between the aqueous and organic phases. The formation reaction of succinic acid-TOA complex was found to be first order with respect to the concentration of succinic acid in the aqueous phase and the order of 0.5 with respect to that of TOA in the organic phase with a rate constant of (3.14 +/- 0.6) x 10(-8) m(2.5) x mol(-0.5) x s(-1). The dissociation reaction of succinic acid-TOA complex was found to be the second-order with respect to that of succinic acid-TOA complex in the organic phase and the order of -2 with respect to that of TOA in the organic phase with a rate constant of (1.44 +/- 1.4) x 10(-4) mol x m(-2) x s(-1).
authors.affiliation: Department of Chemical and Biomolecular Engineering, KAIST, Daejeon 305-701, Korea.
authors.forename: Young-Si
authors.initials: YS
authors.lastname: Jun
authors.forename: Yun Suk
authors.initials: YS
authors.lastname: Huh
authors.forename: Won Hi
authors.initials: WH
authors.lastname: Hong
authors.forename: Yeon Ki
authors.initials: YK
authors.lastname: Hong
mesh_terms: D020003:1-Octanol; D019342:Acetic Acid; D000588:Amines; D001709:Biotechnology / Q000295:instrumentation; D004058:Diffusion; D057927:Hydrophobic and Hydrophilic Interactions; D007455:Iodine; D008567:Membranes, Artificial; D012996:Solutions; D012997:Solvents; D019802:Succinic Acid / Q000302:isolation & purification*; D014867:Water
chemical_list: D000588:Amines; D008567:Membranes, Artificial; D012996:Solutions; D012997:Solvents; D014867:Water; D007455:Iodine; D019802:Succinic Acid; C038229:tri-N-octylamine; D020003:1-Octanol; D019342:Acetic Acid