Liquid–Liquid Equilibrium of Hydrophilic Alcohols with Three Different Salts of Chloride: Experiment and Correlation

Abstract

Ternary liquid−liquid phase equilibria were investigated at 298.15 K for hydrophilic alcohols (2-propanol/ 1-propanol) + different salts of chloride (KCl/NaCl/CaCl 2 ) + water systems. The phase-forming and salting-out capabilities of the mentioned salts were discussed by determination of both excluded effective volume and salting-out coefficient. The results showed that the salting-out capabilities of the studied salts are as follows: CaCl 2 > NaCl > KCl. The phase-forming capability of the investigated hydrophilic alcohols was discussed by using the dielectric constant and the boiling point of the alcohols. The four-parameter equation was used to fit the binodal curves data, and also the Bancroft and Othmer−Tobias equations were successfully used to correlate the tie-lines data. Correlation of the data demonstrates that the calculated method and experimental data are in good accord.

Research on Alkanolamine-Based Physical–Chemical Solutions As Biphasic Solvents for CO2 Capture

“…Therefore, a lower water concentration would result in lower critical CO 2 loading for the biphasic system. A similar phenomenon was observed in the aqueous two-phase system of chlorine salts (KCl/NaCl/CaCl 2 ) + alcohols (1-propanol/2-propanol) + water . Increasing the salts concentration in water demonstrates an increase of the salting-out effect, which is the driving force for the two-phase formation ability.…”

Liquid-liquid equilibria in aqueous two-phase ethanol/salt systems at different temperatures and their application to anthocyanins extraction

“…However, the use of ATPS to concentrate and purify biocompounds requires knowledge of the liquid-liquid equilibrium data as well as the target molecule distribution in the systems, so that profitable and productive extraction processes can be designed (Khayati & Gholitabar, 2016). Thus, in the present work, equilibrium data of ATPS made up of ethanol and sodium citrate/ammonium sulfate were obtained at different temperatures to evaluate the effect of temperature on liquid-liquid equilibrium.…”

Poly(Methyl Methacrylate) Coatings Containing Flame Retardant Additives from Suspensions in Water-2-Propanol

“…The ability to use water-2-propanol mixtures for the fabrication of PMMA solutions was one of the key factors for the development of a new approach for the fabrication of composite coatings. Another factor was the ability to separate 2-propanol from its mixture with water by a salting out method [ 28 , 29 ]. In this work, Al(OH) 3 was prepared by a chemical precipitation from an aqueous solution of Al 2 (SO 4 ) 3 .…”