Study on the Isobaric Vapor–Liquid Equilibrium Behavior of the Methanol + Methyl Ethyl Ketone System Using Ionic Liquids as Extractants and Model Correlation

Wu, Tianzhao; Yin, Chaoyue; Zhang, Aidi; Xia, Hua; Lu, Ming; Lin, Tong; Lu, Yao; Wang, Yangyang; Song, Tinghe; Li, Shunmin; Zhang, Qinqin; Zhang, Zhigang

doi:10.1021/acs.jced.2c00029

Cited by 9 publications

(2 citation statements)

References 50 publications

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“…The thermodynamics consistency of the binary system VLE data is verified by Fredenslund's test and Wisniak's L-W test [61][62][63].…”

Section: Data Processingmentioning

confidence: 81%

Separation of Ethyl Acetate and Ethanol Azeotropic System by Acetate-Based Ionic Liquid

Li,

Zhang,

et al. 2024

J Solution Chem

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Three ionic liquids (ILs)(1-ethyl-2,3-dimethylimidazolium acetate, [EMMIM][AC]; tributylmethylammonium acetate, [N4,4,4,1][AC]; and tetraethylammonium acetate, [N2,2,2,2][AC]) were chosen. The vapor-liquid equilibrium (VLE) data of ternary mixtures (acetate + ethanol + IL) were gauged at 101.3KPa. NRTL equation was applied to correlate the data. From NRTL model, for [N2,2,2,2][AC], [EMMIM][AC] and [N4,4,4,1][AC], minimum mole fractions for completely eliminating azeotrope are 0.015, 0.020 and 0.022, respectively. From the average relative volatility and σ-profiles, it can be obtained that the separation ability order is [EMMIM][AC] > [N2,2,2,2][AC] > [N4,4,4,1][AC].

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“…The thermodynamics consistency of the binary system VLE data is verified by Fredenslund's test and Wisniak's L-W test [61][62][63].…”

Section: Data Processingmentioning

confidence: 81%

Separation of Ethyl Acetate and Ethanol Azeotropic System by Acetate-Based Ionic Liquid

Li,

Zhang,

et al. 2024

J Solution Chem

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“…Short-chain alcohols ( n -propanol and n -butanol) are commonly produced from a fermentation broth that can be used for bio-fuel, solvents, and diesel engines. − However, many of these alcohols create azeotropes with water. − Several techniques including azeotropic and extractive distillation, − liquid–liquid extraction, membrane separation, and salt addition − were applied to break the azeotrope point. Facing the high energy requirements of the distillation process, liquid–liquid extraction with buffering-out agents is required in order to extract n -butanol from the fermentation broths.…”

Section: Introductionmentioning

confidence: 99%

Biological Buffer Effect on Liquid–Liquid Equilibria of Systems Containing n-Butanol + Methyl Isobutyl Ketone + Water

et al. 2023

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Biofuel, that is, n-butanol, production from plant-based biomass represents a renewable energy resource that can be a substitute for fossil fuel. Thus, it is important to study the separation of n-butanol from its aqueous solution to obtain a high-purity product. Liquid–liquid extraction is a beneficial process in alcohol production to recover alcohol from the aqueous medium. Liquid–liquid equilibrium (LLE) data are needed for rational design and optimal separation operation, such as biological separation and extraction processes. The objective of this study is to determine LLE data for quaternary systems of n-butanol, methyl isobutyl ketone (MIBK), water, and a biological buffer at 303.15 K and atmospheric pressure (P = 0.1 MPa). The effect of biological buffer addition into aqueous solution was also studied. Three different biological buffers, 4-(2-hydroxyethyl)-1-piperazine propanesulfonic acid (EPPS), 4-morpholinepropanesulfonic acid (MOPS), and 4-(2-hydroxyethyl)piperazine-1-ethanesulfonic acid (HEPES), were applied in this study for the comparison. The separation factor and distribution coefficient were evaluated in this study to interpret the extraction performance of n-butanol. According to the experimental results, the extraction performance was in the order of HEPES > EPPS > MOPS, describing the strength of buffering-out as well. Furthermore, it was found that the aid of a biological buffer in the LLE systems consisting of n-butanol, MIBK, and water resulted in better extraction performance than that of the LLE systems in the absence of a biological buffer. The reliability of the experimental LLE tie-line data was satisfactorily ascertained by the Hand correlation. The non-random two-liquid and universal quasi-chemical thermodynamics models correlated well the experimental LLE tie-line data with the root mean square deviation of less than 1%. The binary interaction parameters of both models were also obtained in this study.

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Separation of methyl ethyl ketone - methanol azeotrope by ionic liquids: Thermodynamic and molecular mechanism

Yang,

Wu,

Xin

et al. 2023

Chemical Engineering Science

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Study on the Isobaric Vapor–Liquid Equilibrium Behavior of the Methanol + Methyl Ethyl Ketone System Using Ionic Liquids as Extractants and Model Correlation

Cited by 9 publications

References 50 publications

Separation of Ethyl Acetate and Ethanol Azeotropic System by Acetate-Based Ionic Liquid

Separation of Ethyl Acetate and Ethanol Azeotropic System by Acetate-Based Ionic Liquid

Biological Buffer Effect on Liquid–Liquid Equilibria of Systems Containing n-Butanol + Methyl Isobutyl Ketone + Water

Separation of methyl ethyl ketone - methanol azeotrope by ionic liquids: Thermodynamic and molecular mechanism

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