Author： Mohsen-Nia M.
Publisher： Taylor & Francis Ltd
ISSN： 0031-9104
Source： Physics and Chemistry of Liquids, Vol.45, Iss.6, 2007-12, pp. : 623-629
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Abstract
Mixed solvent of (ethanol + 5% mass fraction of water) was studied as a possible extraction of oleic acid from corn oil at three temperatures (298.2, 308.2 and 318.2 K). The experimental liquid-liquid equilibrium data have been correlated using the UNIQUAC activity coefficient model to obtain the binary interaction parameters of these components. The UNIQUAC model satisfactorily correlated the equilibrium compositions. The partition coefficients and the selectivity factor of the mixed solvent systems were calculated and presented. From our experimental results, we conclude that increasing the temperature causes an increase in the distribution coefficient and a decrease in the selectivity factor. Considering the obtained partition coefficients and selectivity factors, 298.2 K may be suggested as an optimum temperature for an efficient extraction of oleic acid from corn oil by (ethanol + ethanol + 5% mass fraction of water).
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