Liquid-liquid equilibria for methyl isobutyl ketone + cresols + water at 333.15 K, 343.15 K and 353.15 K: Experimental results and data correlation

Abstract

In this work, the liquid-liquid equilibrium (LLE) data for ternary systems, methyl isobutyl ketone + o, m or p-cresol + water were measured at 333.15K, 343.15K and 353.15K under 101.3kPa. The nonrandom (NRTL) and universal quasichemical (UNIQUAC) models were used to correlate the experimental data, and the results indicated that, both models predicted LLE data quite accurately, with root mean square deviations (RMSD) less than 2.5%. The binary interaction parameters calculated from these two models were also reported. Distribution coefficient and selectivity were calculated to assess the extraction performance of methyl isobutyl ketone.

Measurement and Correlation of Liquid–Liquid Equilibrium Data for Cyclohexanone–Water–Phenol Ternary System

“…The root-mean-square deviation (rmsd) − is applied to evaluate the consistency between the available experimental results and calculated data by the thermodynamic models (NRTL or UNIQUAC). It is given as follows …”

Measurement, correlation and COSMO-SAC prediction of liquid-liquid equilibrium for the ternary systems, mesityl oxide + o-, m-, p-cresol + water, at 333.2K and 353.2 K

“…As a polar organic solvent, Mesityl oxide have shown high efficiency in extracting phenol from the aqueous solution [26]. In addition, it is usually easier to extract cresols from aqueous solutions than to extract phenol [24,25,[27][28][29]. Therefore, it is of practical significance to study the performance of mesityl oxide to extract cresols from wastewater.…”

“…In industrial practice, especially in coal gasification plants, the operation temperature of the extraction column is often above 333 K, so that the extraction installation would not be clogged by the paraffin (melting point ranges from 328.5 K to 335.15 K) in the wastewater. However, the LLE equilibrium data for phenolic compounds above 333 K are very scarce at present, not to mention data for cresols [25].…”

“…(eg: boiling point is 402.2 K and water solubility is 2.8g/100g water at 293.2 K) are more desirable than methyl tert-butyl ether (MTBE) (eg: boiling point is 328.4 K and water solubility is 4.3g/100g water at 293.2 K) which forms azeotropic mixtures with water at 328.2K. A further comparison of D and S of mesityl oxide with methyl isobutyl ketone (MIBK)[25] are shown inFig.S1-S3, which indicates the extraction efficiency of mesityl oxide and MIBK for cresols are quite close. All these results indicate that, a mesityl oxide-based extraction process to remove cresols from effluents is quite feasible.…”

Determination and modeling of liquid-liquid equilibrium for ternary mixtures of methyl isopropyl ketone, cresol isomers and water

“…Desirable physicochemical properties, such as low toxicity, good stability, low cost and so on, are primary requirements for a suitable extractant [15], and high distribution coefficients and separation factors could guarantee the extractant's good efficiency in the extraction process. [22]. Therefore, to investigate more promising solvent for extracting cresols is still primary consideration.…”