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Article: Partitioning of Carboxylic Acid between Oil and Water Phases. Experimental, Correlation, and Prediction
- Article from:
- JAOCS, Journal of the American Oil Chemists' Society
- Article date:
- June 1, 2009
- Author:
CopyrightCopyright AOCS Press Jun 2009. Provided by ProQuest LLC. (Hide copyright information)
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Abstract
Partition coefficients for the carboxylic acids (A) acetic and formic acids between oil and water were measured, correlated, and predicted. The experiments were conducted by equilibrating the systems, soybean oil (SO)-H^sub 2^O-A and fatty acid methyl ester (FAME)-H^sub 2^O-A, at 40 °C employing different compositions. The partition coefficients were correlated using the UNIQUAC model and, also, predicted by calculating the activity coefficients of the carboxylic acid in the two phases using a group contribution method, the UNIFAC equation. Agreement of experimental partition coefficients values with those estimated by UNIFAC are fair. Other experimental data from literature were ...