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

Abstract

Liquid−liquid equilibria provide fundamental data for designing and simulating a proper extraction process. The aim of this work is to extract cyclohexanone from wastewater using appropriate solvents. Liquid−liquid equilibrium experimental results were measured for water + cyclohexanone + benzene or methyl isobutyl carbinol ternary systems at 303.15 and 323.15 K under 101.3 kPa. The distribution ratios as well as selectivity values were calculated according to the experimental data to assess the extracting behaviors of the selected solvents. The selectivity value has a slight decrease with the increasing temperature from 303.15 to 323.15 K, which indicates that temperature has an adverse effect and the low temperature is more suitable for extraction. Besides, the consistency and reliability of the obtained experimental results were ascertained by applying both the Hand and Bachman equations. The obtained experimental tie-line data fitted well with the nonrandom two-liquid and universal quasichemical activity coefficient models, yielding root-mean-square deviation (rmsd) values as low as 0.17 and 0.16 for the two models, respectively.

Measurement and Thermodynamic Models for Ternary Liquid–Liquid Equilibrium Systems {Water + Polyoxymethylene Dimethyl Ethers +4-Methyl-2-pentanol} at Different Temperatures

“…Given the relative lack of available data, it is still imperative to find more and new extractants to separate DMM n products. According to the work by Liu et al, 15,16 As we know, few available literature data of these ternary systems are mentioned. The tie-line values regarding ternary mixtures {water + DMM 1 + MIBC}, {water + DMM 2 + MIBC}, {water + DMM 3 + MIBC}, and {water + DMM 4 + MIBC} were obtained at 298.2 and 308.2 K under 101.3 kPa, and the distribution factor and selectivity 17 were computed to estimate the separation effectivity of extracting DMM 1−4 from an aqueous solution.…”

“…Given the relative lack of available data, it is still imperative to find more and new extractants to separate DMM n products. According to the work by Liu et al, , 4-methyl-2-pentanol (MIBC) can exhibit good extraction ability in aqueous solution. Therefore, MIBC was chosen as a new solvent for extracting PODE 1–4 from water in this study.…”