In this work, liquid−liquid equilibria (LLE) data for the ternary system {mesityl oxide (1) + phenol (2) + water (3)} were measured at 298.15, 313.15, and 323.15 K under atmospheric pressure. The experimental LLE data were proven to be highly reliable by the Othmer−Tobias and Hand equations. The distribution coefficient and selectivity were calculated from the LLE data, which indicated mesityl oxide extracted phenol with a rather high efficiency. The NRTL and UNIQUAC models were employed to correlate the LLE data, yielding binary interaction parameters for simulating relevant extraction processes. The experimental LLE data were correlated successfully by both models.
Liquid-liquid equilibrium (LLE) data for the ternary systems, methyl isopropyl ketone (MIPK) + (resorcinol, or hydroquinone) + water, were measured at 298.2, 313.2 and 323.2 K under atmospheric pressure by gas chromatography. The efficiency of MIPK to extract resorcinol or hydroquinone was assessed by the distribution coefficients and separation factors. The LLE data were correlated by the NRTL and UNIQUAC models to yield binary interaction parameters. MIPK was proven to be very promising to extract phenols by comparing its extraction efficiency and physical properties with other extractants used for extracting phenols in industry. The binary interaction parameters of solute pairs, e.g.
Liquid-liquid equilibrium (LLE) data are vital to extraction process design and optimization. To provide fundamental data for the extracting process of dihydric phenol from wastewater, experimental liquid liquid equilibrium data for ternary systems {methyl isobutyl ketone + catechol + water}, {methyl isobutyl ketone + resorcinol + water} and {methyl isobutyl ketone + hydroquinone + water} were determined at 333.15 K, 343.15 K and 353.15 K under atomospheric pressure. The NRTL and UNIQUAC models were used to correlate the experimental data and relevant binary interaction parameters were yielded. The experimental data were successfully correlated with the two models, and the root mean square deviations (RMSD) between the calculated and experimental values were less than 2%. Moreover, NRTL model performed slightly better than UNIQUAC model since the RMSD was smaller.Distribution coefficient and selectivity were employed to assess methyl isobutyl ketone's extraction capacity, which indicate that, methyl isobutyl ketone is a desirable extractant with
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.
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