Liquid–Liquid Equilibria for Ternary Systems: Methyl Butyl Ketone + Phenol + Water and Methyl Butyl Ketone + Hydroquinone + Water at 298.15 K and 323.15 K

Abstract

Liquid−liquid equilibria (LLE) data for two ternary systems: methyl butyl ketone (MBK) + phenol + water and methyl butyl ketone + hydroquinone + water have been measured at 298.15 K and 323.15 K under atmospheric pressure. The reliability of experimental tie-line data was checked by Hand and Bachman equations. The distribution coefficient and selectivity were used to evaluate the extraction performance of methyl butyl ketone. In addition, NRTL (nonrandom two-liquid) and UNIQUAC (universal quasi-chemical activity coefficient) models were used to correlate experimental data, which yielded corresponding binary interaction parameters. Results from both models agree with each other well. NRTL model presents a stronger predictive power than UNIQUAC model.

Measurement and thermodynamic modeling of ternary (liquid + liquid) equilibrium for extraction of o-cresol, m-cresol or p-cresol from aqueous solution with 2-pentanone

“…And there is also an evident decreasing tendency shown in distribution coefficients and separation factors with the increasing of cresol's concentration in the aqueous phase or in the organic phase at a certain temperature, indicating that concentration also put a vital effect on the distribution ratios of cresol among organic phase and aqueous phase and on the separation factors. Such temperature and concentration dependence could also be commonly observed in many other ternary systems, especially phenols containing systems [34][35][36][37][38][39]. It can also be seen from figures 7 and 8 that, the influence of the structure of cresol isomers on the extractive properties of 2-pentanone is insignificant, as the distribution coefficients and separation factors are very close for the three cresol isomers when using 2-pentanone as the extraction agent.…”

Liquid–liquid equilibria in the ternary systems water+cresols+methyl butyl ketone at 298.2 and 313.2K: Experimental data and correlation

“…seen from Tables 2 to 4, MBK's distribution coefficients and separation factors for all three cresols are much higher than that for phenol and hydroquinone [11], indicating MBK's more excellent ability for extracting cresols than for phenol and hydroquinone from water. The reliability of experimental LLE data was verified by the Hand [14] and Othmer and Tobias [15] equations, shown as Eqs.…”

“…However, these studied solvents usually suffer from severe flaws such as high solubility in water, easy to hydrolyze, and low distribution coefficients for cresols. Methyl butyl ketone (MBK) should be a more desirable solvent because of its good physical and chemical properties [10] for extraction and high distribution coefficients for phenolic compounds including phenol and hydroquinone [11], but no LLE data for (water + cresols + MBK) have been reported yet.…”

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

“…This method has being used in China [5], South Africa [1] , United states [1,6], etc., for quite a few decades, and the process simulation, operation cost and industrial implementation has been studied thoroughly [7,8]. Liquid-liquid equilibria (LLE) data are essential for designing or optimizing an extraction process [9][10][11]. Some LLE data of the ternary solvent-cresol-water systems have been published in recent years.…”