Equilibria and kinetics for reactive extraction of lactic acid using Alamine 336 in decanol

Kailas L. Wasewar, Albertus B.M. Heesink, Geert Versteeg, Vishwas G. Pangarkar

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    Abstract

    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.
    Original languageUndefined
    Pages (from-to)1-8
    Number of pages8
    JournalJournal of chemical technology and biotechnology
    Volume77
    Issue number9
    DOIs
    Publication statusPublished - 2002

    Keywords

    • Kinetics
    • Reactive extraction
    • Equilibria
    • METIS-210785
    • Lactic acid
    • Alamine 336
    • decanol
    • IR-71847

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