Measurement and thermodynamic modeling of ternary (liquid + liquid) equilibrium for extraction of ethanol from diethoxymethane solution with different solvents

Jia, Bing; Xin, Kun; Yang, Tengfei; Yu, Jie; Yu, Yingmin; Li, Qingsong

doi:10.1016/j.jct.2017.03.014

Cited by 17 publications

(8 citation statements)

References 25 publications

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“…The experimental distribution coefficients of 3-MPA at different temperatures versus its concentration in the organic phase (Fig. a) show that the distribution coefficients decrease with an increase in temperature, which is a general observation in the liquid–liquid equilibrium of the ternary system. − …”

Section: Resultsmentioning

confidence: 67%

Liquid–Liquid Equilibrium for the Ternary System of 3-Mercaptopropionic Acid + Water + Trichloromethane

Tang

Bao²,

et al. 2019

J. Chem. Eng. Data

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Liquid–liquid equilibrium (LLE) for the ternary system of 3-mercaptopropionic acid (3-MPA) + water + trichloromethane (TCM) was measured at temperatures of (303.2, 313.2, and 323.15) K under atmospheric pressure, and the corresponding phase diagrams were illustrated. Moreover, it was demonstrated that the presence of NaCl in the system can promote the separation of the two liquid phases, which favors the extraction of 3-MPA from water by TCM. The experimental data were correlated by using the nonrandom two-liquid (NRTL) equation, which showed that the calculated data are in good agreement with the experimental data, and the NRTL model can accurately predict the LLE of the ternary system at specific temperatures using the obtained interaction energy parameters.

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Section: Resultsmentioning

confidence: 67%

Liquid–Liquid Equilibrium for the Ternary System of 3-Mercaptopropionic Acid + Water + Trichloromethane

Tang

Bao²,

et al. 2019

J. Chem. Eng. Data

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“…The mass fractions of the chemical reagents were measured by gas chromatography (GC). These reagents were employed as received as is typical for LLE studies; , deionized water was applied throughout the experiment.…”

Section: Methodsmentioning

confidence: 99%

“…Aspen Plus V7.1 software was used to obtain the correlated tie-line data and corresponding binary model parameters. The objective function (OF) applied in this study, which can be found in the previous literature , was expressed as the following equation. where M is the tie line number, w exp and w cal are mass fraction of experimental results and calculated results, respectively.…”

Section: Methodsmentioning

confidence: 99%

Liquid–Liquid Equilibria Determination and Prediction for Ternary Systems of Water + 1,6-Hexanediamine + (1-Butanol or 1-Pentanol) at 298.2, 308.2, and 318.2 K

Zhang

Dou

et al. 2017

J. Chem. Eng. Data

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Data of liquid–liquid equilibria (LLE) for water + 1,6-hexanediamine + 1-butanol and water + 1,6-hexanediamine + 1-pentanol ternary systems were determined at T = 298.2, 308.2, and 318.2 K under atmospheric pressure. The distribution coefficients and selectivity factors calculated from LLE data were applied to evaluate the feasibility and effectiveness of extracting 1,6-hexanediamine from the aqueous solution. The results showed that the selectivity factors decrease with the amount of 1,6-hexanediamine increasing in the aqueous phase, and the effect of temperature is insignificant in this study. The nonrandom two-liquid and universal quasichemical activity coefficient models were also applied to regress the experimental equilibrium data of the two ternary systems and the root mean square deviation values between the correlated and experimental results were lower than 0.7%. It turned out that these phase equilibrium behaviors can be described by the two models. Meanwhile, the binary model parameters were acquired from the relevant process simulations.

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“…In addition, diethoxymethane is also an excellent diesel fuel additive, which can increase the octane number and reduce carbon monoxide emissions [2]. At present, diethoxymethane is mainly synthesized by formaldehyde and ethanol, however, diethoxymethane is easy to form azeotropes with by-products of water and ethanol during the synthesis process [3], which makes it difficult to obtain high-purity diethoxymethane and cause water pollution. Solvent extraction method can well overcome this azeotropic effect.…”

Section: Introductionmentioning

confidence: 99%

Measurement and Correlation of Liquid-Liquid Equilibrium Data of Mesityl oxide-Diethoxymethane-Water System

et al. 2021

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To provide essential data for the separation of diethoxymethane and system water using mesityl oxide as the extractant, in this paper, the liquid-liquid equilibrium data of the ternary system of ‘mesityl oxide + diethoxymethane + water’ was measured at 303.2 K, 313.2 K and 323 K under normal pressure. The experimental results showed that partition coefficient and separation factor were both larger than 1, indicating that diethoxymethane and water could be well separated with mesityl oxide. The linear correlation coefficient of Bachman and Hand equation was larger than 0.99, indicating that our experimental data has good reliability. At the same time, the binary interaction parameters of the model were obtained by correlating the experimental data with the NRTL and UNIQUAC models. The relative root mean square error (RMSD) of the experimental value and the calculation formula was less than 0.79%, indicating that both the NRTL and UNIQUAC models can be well associated with experimental data.

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Measurement and thermodynamic modeling of ternary (liquid + liquid) equilibrium for extraction of ethanol from diethoxymethane solution with different solvents

Cited by 17 publications

References 25 publications

Liquid–Liquid Equilibrium for the Ternary System of 3-Mercaptopropionic Acid + Water + Trichloromethane

Liquid–Liquid Equilibrium for the Ternary System of 3-Mercaptopropionic Acid + Water + Trichloromethane

Liquid–Liquid Equilibria Determination and Prediction for Ternary Systems of Water + 1,6-Hexanediamine + (1-Butanol or 1-Pentanol) at 298.2, 308.2, and 318.2 K

Measurement and Correlation of Liquid-Liquid Equilibrium Data of Mesityl oxide-Diethoxymethane-Water System

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