Liquid–liquid equilibria in the ternary systems {water + cyclopentanone + benzene or toluene} at different temperatures: Experimental data and correlation

Liquid–Liquid Equilibrium for Ternary System n-Butanol + n-Hexane + Ethylene Glycol at 298.15–323.15 K

“…Aspi et al reported the LLE data of cyclohexane + benzene + dimethylformamide + ethylene glycol, and the regression data obtained by NRTL model showed a good agreement with the experimental data. In the mentioned literature, − the utilization of NRTL and UNIQUAC models in correlating the LLE data obtained satisfactory regression results. Thus, in the present work, NRTL and UNIQUAC models were used to correlate the LLE data of n -butanol + n -hexane + ethylene glycol system at 298.18–323.15 K. The regression software Aspen Plus 7.2 was employed to obtain the binary interaction energy parameters which could be obtained when the objective function (OF) was minimized. where the subscripts i , j , and k represent to the component, phase and tie-line, respectively; N represent to the number of tie-lines; x ijk exp and x ijk cal were the experimental and calculated mole fraction, respectively.…”

“…UNIQUAC and NRTL models are usually used to correlate LLE data. − Utilization of the two models has been reported for LLE in the ethylene glycol-containing systems. For instance, Mohsen-Nia et al measured the liquid–liquid equilibrium for ternary mixtures of ethylene glycol + toluene + n -octane and correlated these data using the NRTL and UNIQUAC model.…”

Temperature and Salt Effects on the Liquid–Liquid Equilibrium of the Water + Cyclopentanone + (Propan-2-yl) Benzene System

“…The corresponding phase behavior of the system is shown in Figure . The slope of tie-lines obviously represents much more solubility of cyclopentanone in cumene than water which can be attributed to the carbonyl group in the cyclopentanone molecule, interacting with the cumene molecule; however, there could be only a weak bond between cyclopentanone and hydrogen of water . Obviously, the solubility in cumene is highly increased with the solute concentration.…”

“…Among used solvents, higher extractive ability was recognized for methyl isobutyl ketone. In another study, He et al 10 introduced benzene and toluene solvents for extracting cyclopentanone from the aqueous phase because of low pressure, low density, and ease of recovery from water. Considering the importance of temperature, Wang et al 11 have recently compared the ability of methylcyclohexane and propyl acetate for extracting cyclopentanone from water at 308.2, 318.2, and 328.2 K. Their investigation revealed that methylcyclohexane could be the most suitable solvent with a high selectivity.…”

Liquid–Liquid Equilibrium in the Ternary Systems Water + Cyclohexanone + Benzene or Methyl Isobutyl Carbinol at 303.15 and 323.15 K: Experimental Data and Correlation

“…The two activity coefficient models, NRTL and UNIQUAC, were both utilized to correlate the determined tie-line data of each ternary system by using Aspen 8.4 software. For the UNIQUAC correlation model, the structural parameters of pure component r and q originated from literature , and are also listed in Table . By using these two models, the determined LLE data were correlated, and the binary parameters ( a ij , a ji and b ij , b ji ) for each system were obtained.…”