Liquid–liquid equilibrium for the system water + acetic acid + 1-heptanol at 278.1, 293.1, 303.1 and 313.1 K

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.…”

“…LLE data for the three ternary mixtures [water (1) + acetic acid, or pyruvic acid, or valeric acid (2) + chloroform (3)] were determined at 293.15 K. It is apparent from the distribution and selectivity data that the separation of C2-C5 acids from water by extraction with chloroform is feasible for valeric and acetic acids ( Table 2 and Figs. [1][2][3][4][5].…”

“…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].…”

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.…”

“…Nevertheless, such studies, besides other purposes, are indispensable in calibration and verification of analytical models. Liquid-liquid equilibrium (LLE) data for extraction of a carboxylic acid from water through heavy n-alkanols is scarce in the literature [3,5].…”