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Equilibria and kinetics for reactive extraction of lactic acid using Alamine 336 in decanol
Author(s) -
Wasewar Kailas L,
Heesink A Bert M,
Versteeg Geert F,
Pangarkar Vishwas G
Publication year - 2002
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/jctb.680
Subject(s) - lactic acid , extraction (chemistry) , amine gas treating , chemistry , kinetics , chemical equilibrium , diffusion , equilibrium constant , reaction rate constant , aqueous solution , chemical kinetics , solvent , chemical reaction , chemical engineering , inorganic chemistry , organic chemistry , thermodynamics , genetics , physics , quantum mechanics , bacteria , biology , engineering
Lactic acid is an important commercial product and extracting this from aqueous solution is a growing requirement in fermentation‐based industries. The design of an amine extraction process requires (i) equilibrium and (ii) kinetic data for the acid–amine (solvent) system used. The equilibrium complexation constants for ratios of (1:1) and (2:1) have been estimated. The kinetics of extraction of lactic acid by Alamine 336 in decanol has also been determined. The reaction between lactic acid and Alamine 336 in decanol in a stirred cell falls in Regime 3, ie extraction accompanied by a fast chemical reaction occurring in the diffusion film. The reaction has been found to be zero order in Alamine 336 and first order in lactic acid with a rate constant of 0.21 s −1 . These data will be useful in the design of extraction processes. © 2002 Society of Chemical Industry