Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/14575
Title: Equilibrium and kinetic studies on the liquid-liquid extraction and stripping of L-phenylalanine via reversed micelles
Authors: MAN LYNN SUM
Keywords: AOT reversed micelles, L-Phenylalanine, Extraction, Stripping, Stirred cell, Genetic Algorithm
Issue Date: 15-May-2005
Source: MAN LYNN SUM (2005-05-15). Equilibrium and kinetic studies on the liquid-liquid extraction and stripping of L-phenylalanine via reversed micelles. ScholarBank@NUS Repository.
Abstract: This work involves the liquid-liquid extraction and stripping of L-phenylalanine via sodium di(2-ethylhexyl) sulfosuccinate (AOT) reversed micelles. Equilibrium studies were performed to investigate the effects of pH, salt concentration and amino acid concentration in the feed solution, the surfactant concentration in the organic phase and temperature on extraction, as well as the influences of the pH and salt concentration in the strip solution, the amino acid concentration in the organic phase and temperature on stripping. Except for temperature, the different parameters affect the reversed micellar structure and the interaction between L-phenylalanine and AOT. Kinetic studies on the effects of the surfactant concentration and the salt concentration at various temperatures on extraction and stripping respectively were determined using a stirred cell. A linear driving force mass transfer model and an ion-exchange model were developed and the mass transfer coefficients were obtained using Genetic Algorithm. Both models were generally able to predict the concentration-time profiles of L-phenylalanine.
URI: http://scholarbank.nus.edu.sg/handle/10635/14575
Appears in Collections:Master's Theses (Open)

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