Liquid-liquid equilibria of the ternary system water + propanoic acid + methyl isobutyl ketone at various temperatures

Liquid–liquid equilibria for the system (water+carboxylic acid+chloroform): Thermodynamic modeling

“…[1][2][3][4][5]. The distribution of C2-C5 carboxylic acids in the (water + chloroform) two-phase system is better for acetic and valeric acids than pyruvic acid.…”

“…The efficient separation of carboxylic acids from aqueous solutions is an important concept in the chemical fermentation industry where many solvents have been tested to improve such recovery [1][2][3][4][5][6]. Especially, extractive recovery of acetic acid by selective solvent systems from aqueous solutions, such as fermentation broth and wastewater including lower than 10% (w/w) acid concentrations has received increasing interest [7,8].…”

“…It has lower boiling temperatures than water and carboxylic acids. Most chlorinated hydrocarbon solvents used to extract a carboxylic acid show a distribution coefficient less than one [1,9]. Nevertheless, such studies, besides other purposes, are indispensable in calibration and verification of analytical models.…”

Liquid–liquid equilibria for ternary systems of (water+carboxylic acid+1-octanol) at 293.15K: modeling phase equilibria using a solvatochromic approach

“…The efficient separation of organic acids from aqueous solutions is an important concept in the chemical fermentation industry where many solvents have been tested to improve such recovery [1][2][3][4]. In this work, 1-octanol, a protic and polar aliphatic compound of low vapor pressure is used as a solvent in the separation of carboxylic acids from water.…”

Liquid-liquid equilibria of propionic acid - water - solvent (n-hexane, cyclohexane, cyclohexanol and cyclohexyl acetate) ternaries at 298.15 K

“…Liquid extraction of propionic acid from aqueous solutions with various solvents has been reviewed by several researchers (Badakhshan et al, 1985;Arce et al, 1993Arce et al, , 1995Yoshizawa et al, 1994;Sólimo et al, 1997;Radwan et al, 1997;Zurita et al, 1998;Cehreli et al, 1999). To be able to choose the most suitable agent for extraction of propionic acid from aqueous solutions, experimental liquidliquid equilibrium data were determined for propionic acid -water -solvent ternary mixtures at a temperature of 298.15 K.…”