Measurement and Correlation of Ternary (Liquid + Liquid) Equilibria for Separation of Cyclohexanone from Water via Isophorone or Mesityl Oxide

Abstract

Liquid–liquid equilibria provide basic data and guidance regarding the design, simulation, and development of an appropriate solvent extraction process. In the current work, the data for the liquid–liquid equilibrium (LLE) of water + cyclohexanone + isophorone and water + cyclohexanone + mesityl oxide systems have been measured at temperatures of 308.15–328.15 K and pressure of 101.3 kPa. The empirical Bachman and Hand equations were utilized to confirm the consistency of experimentally determined LLE data. Meanwhile, the solute distribution ratio and separation parameter were obtained from the experimental equilibrium data to evaluate the extraction properties of the selected solvents. Additionally, a mathematical regression of experimental tie-line compositions for all of the investigated ternary mixtures was performed by means of the nonrandom two-liquid and universal quasi-chemical activity coefficient models to acquire corresponding optimized binary interaction parameters. The correlation results were verified to be coincident with the experimental ones and revealed that the above two thermodynamic models were of high-accuracy and suitable to regress the tie-line compositions for the investigated ternary systems.

Liquid–Liquid Equilibrium Studies of Water/Phosphoric Acid/Mesityl Oxide Ternary Systems at Different Temperatures

“…The binary results of this study for the MO-containing system are close to the data of ref . Refs and contain predicated data taken from ref that have larger deviations from the data obtained in this study. According to the measured data, the solubility of MO in water increases with increasing temperature.…”

“…The ternary LLE phase diagram for the investigated system is plotted in Figure . Meanwhile, for comparison between the obtained binary data and literature solubility points, Table is prepared. − ,, The experimental and literature data have some deviations due to the variety of measurement methods. The binary results of this study for the MO-containing system are close to the data of ref .…”

“…Chen and co-workers evaluated the utility of mesityl oxide as an extracting solvent for the separation of propionic acid and butyric acid, and other researchers studied phenol, cyclohexanone, and cyclohexanol extractions from water, which resulted in superior extraction performance. Likewise, Feng et al employed MO to separate phenols from coal gasification wastewater, and, according to quantum chemical calculations and experiments, they verified its desirable properties as an extracting solvent as well as a reasonable phenol recovery process design.…”

“…Chen et al studied the impact of carbon chains including C–C or CC bonds on the polarity of a molecule and revealed that the polarity of a molecule containing a CC bond is higher than that containing a C–C bond. In addition, MO tends to represent a high distribution coefficient toward catechol. − However, MO is an α, β-unsaturated carbonyl compound and shows higher reactivity than ordinary solvents of liquid extraction fields. Then, it is necessary to determine the limitations of using MO in liquid–liquid equilibrium studies.…”

Liquid–Liquid Equilibrium Data and Process Simulation for Separating the Mixture of Decanol + Undecanol + Tetradecane + Pentadecane

“…The specific information about uncertainty is provided in the Supporting Information. Generally, the UNIQUAC model and NRTL model are used to regress the LLE data to obtain the binary interaction parameters. − After comparison, it was found that the UNIQUAC model had higher accuracy of regression, so in this article, the UNIQUAC model was used to regress the LLE data to acquire the binary interaction parameters. The activity coefficient in the UNIQUAC model is expressed as follows θ i and φ i represent the volume fraction and surface area fraction, respectively.…”