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2127834 
Journal Article 
Liquid plus liquid equilibria of ternary water plus carboxylic acid plus solvent systems at 288.15 K 
Arabi, A; Mahmoudi, J; Saradar, H; Jafarzade, A; Ghasemi, M 
2011 
1 
Korean Journal of Chemical Engineering
ISSN: 0256-1115
EISSN: 1975-7220 
28 
3 
917-922 
WOS:000288183500040 
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+acetic acid+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. 
Propionic Acid; Acetic Acid; Water; Chloroform; Diethyl Ether; Trichloroethylene; LLE Data