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Received August 23, 2023
Accepted August 23, 2023
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Liquid+liquid equilibria of ternary water+carboxylic acid+solvent systems at 288.15K
School of Chemical, Gas and Petroleum Engineering, Semnan University, Semnan 35196-45399, Iran
j.mahmudi@gmail.com
Korean Journal of Chemical Engineering, March 2011, 28(3), 917-922(6), 10.1007/s11814-010-0425-y
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Abstract
The experimental liquid-liquid equilibrium (LLE) data for six ternary systems containing (chloroform+propionic acid+water), (chloroform+acetic acid+water), (diethyl ether+propionic acid+water), (diethyl ether+aceticacid+water), (trichloroethylene+propionic acid+water) and (trichloroethylene+acetic acid+water) were measured at 288.15 K and at atmospheric pressure. An accurate and simple titration method was used for determining of the concentration of carboxylic acid in the both liquid phases at equilibrium. The reliability of the experimental tie-line data was confirmed by using the Othmer-Tobias correlation. The distribution coefficients and selectivity factors were presented to evaluate the efficiency of the solvents for extraction of carboxylic acid from water. The results show that chloroform and diethyl ether are satisfactory solvents for extraction of carboxylic acids from water. Trichloroethylene separates propionic acid from water; however, it cannot be used as a solvent for separation of acetic acid.
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