Quaternary, Ternary, and Binary LLE Measurements for 2-Methoxy-2-methylpropane + Furfural + Acetic Acid + Water at Temperatures between 298 and 307 K

Abstract

In this paper, measured quaternary and ternary liquid−liquid equilibrium (LLE) data for 2-methoxy-2-methylpropane (methyl tert-butyl ether, MTBE) + furfural + acetic acid (HAc) + water are presented. The measured data are presented together with the optimized binary interaction parameters for the utilized UNIQUAC-HOC (Hayden− O'Connell) activity coefficient model. Suitability of MTBE for liquid−liquid extraction of furfural in an industrial use is discussed.

Measurements and Thermodynamic Models for the Separation of 2-Methoxyethanol and Water Azeotropic Mixtures via Different Solvents

“…Figure 5. Comparisons between experimental solubility of MTBE in aqueous and organic phases with solubility data reported in the literature: ( ◇ ) this work, ( ■ ) Alkandary et al, 21 (•) Mannistöet al,22 (△) Zikmundováet al,23 and (▼) Lei et al24 …”

Quaternary, Ternary and Binary LLE Measurements for 2-Methoxy-2-methylbutane + Furfural + Acetic Acid + Water at Temperatures between 298 and 341 K

“…TAME has much smaller water solubility compared to other ethers such as MTBE studied in earlier work. 6 Lower solubility makes TAME potentially interesting, as its loss to raffinate phase and wastewater streams is lower. It has also not been previously studied for such applications, and we aim to provide new data to use in modeling of extraction processes.…”

“…Apparatus and Procedure. Quaternary and ternary liquid−liquid equilibrium (LLE) measurements for the quaternary and ternary systems with TAME were carried out in the temperature range from 298 to 341 K. The same static glass cell apparatus and measurement style used in earlier work 6 was used in the measurements. Analysis of the equilibrium phases was done with an Agilent Technologies 6890N gas a Standard uncertainties (u) are u(T/K) = 0.2, u(w 1, organic ) = 0.001, u(w 2, organic ) = 0.002, u(w 3, organic ) = 0.003, u(w 1, aqueous ) = 0.008, u(w 2, aqueous ) = 0.008, u(w 3, aqueous ) = 0.002, and u(p/kPa) = 1. chromatograph equipped with two detectors and two columns.…”

“…The setup was explained in further in detail in earlier work. 6,8 Analysis of Samples. Method for response factor development was discussed in earlier work 6 along with uncertainty estimation.…”

“…6,8 Analysis of Samples. Method for response factor development was discussed in earlier work 6 along with uncertainty estimation. For TAME measurements, the following mixtures, all diluted with known amount of acetone, were made for the response factor determination: furfural + water, furfural + TAME, TAME + water, HAc + water, HAc + furfural, and HAc + TAME; five separate samples of each mixture were prepared with different compositions.…”