Abstract
ABSTRACT The separation and enrichment of amino acids were carried out with liquid surfactant membrane(LSM) containing tri-n-octylmethylammonium chloride(TOMAC) as a mobile carrier and polyamine as an emulsifier. To clarify the extraction mechanism, the extraction equilibrium and kinetics were investigated. The extraction equilibrium constants(KA) for various amino acids differed considerably, and could be correlated well with hydrophobicity scale of each amino acid. The permeation kinetics of amino acids through LSM was studied in a stirred transfer-cell. Mass transfer coefficients were determined based on the double-film model with an instantaneous reaction. The initial permeation rate was controlled by the mass transfer processes across the interface between the aqueous and emulsion phases.
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