Enhancement of liquid phase splitting of water + ethanol + ethyl acetate mixtures in the presence of a hydrophilic agent or an electrolyte substance

Lin, Ho-mu; Yeh, Chih-En; Hong, Gui-Bing; Lee, Ming‐Jer

doi:10.1016/j.fluid.2005.08.009

Cited by 33 publications

(13 citation statements)

References 24 publications

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“…The reliability of the above mentioned LLE measurements have been checked with literature data previously [16,17]. In the present study, the methods were used to measure the compositions of two coexistence liquid phases (two ends of tie-lines) and the LLE phase boundary data for the ternary systems of water + methanol + methyl oleate, water + methanol + methyl linoleate, glycerol + methanol + methyl oleate, and glycerol + methanol + methyl linoleate at temperatures from 298.2 K to 318.2 K under atmospheric pressure.…”

Section: Resultsmentioning

confidence: 99%

Liquid–liquid equilibria for mixtures containing water, methanol, fatty acid methyl esters, and glycerol

Lee

Lin

2010

Fluid Phase Equilibria

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Section: Resultsmentioning

confidence: 99%

Liquid–liquid equilibria for mixtures containing water, methanol, fatty acid methyl esters, and glycerol

Lee

Lin

2010

Fluid Phase Equilibria

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“…Tie Lines. The procedure of LLE tie-line measurement has been reported in a previous study by Lin et al, 24 and the experimental apparatus used in this study was based on Peschke and Sandler. 25 The tie lines for LLE and SLLE were measured by using a jacketed equilibrium cell with a volume of 45 cm 3 at 298.15 K under atmospheric pressure.…”

Section: Methodsmentioning

confidence: 99%

Phase Separation of Alcohol (1-Propanol, 2-Propanol, or tert-Butanol) from Its Aqueous Solution in the Presence of Biological Buffer MOPS

2017

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Buffering-out is a new finding phase-separation phenomenon. It can minimize the drawback of the conventional salting-out method, which will cause corrosion of the equipment at high concentrations of ionic salts. To develop this new separation process, phase equilibrium data are essentially needed. In the present study, the density measurements method was used to determine the phase boundaries of solid–liquid equilibrium (SLE), and the cloud-point method was used to determine the phase boundaries of liquid–liquid equilibrium (LLE) and solid–liquid–liquid equilibrium (SLLE). The phase compositions of coexistence phases for alcohol (1-propanol, 2-propanol, or tert-butanol)–water + 3-(N-morpholino)propanesulfonic acid (MOPS), including at LLE and at SLLE, were then measured at 298.15 K with an analytical method. The experimental tie-line data were also accurately correlated by the nonrandom two-liquid (NRTL) model. A conceptual process flowsheet was also proposed for the recovery of 1-propanol from its aqueous solution with the aid of MOPS.

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“…Reactions were performed in a 600-mL stainless steel high-pressure reactor equipped with a mixing system and a thermocouple for internal temperature measurement (Parr Reactor 4560, Parr instrument, Moline, IL, USA). The solvent ratio in the solvent mixture was set up according to the phase diagram to obtain a single-phase mixture (Lin et al 2005). The standard reaction contained 10 g of sugarcane bagasse and 100 mL of the single-phase solvent mixture containing 70-90% by volume of the conventional solvent mixture [water/ethanol/ethyl acetate (50:25:25% as the starting ratio)] and 10-30% by volume of formic acid.…”

Section: Biomass Fractionationmentioning

confidence: 99%

Fractionation of lignocellulosic biopolymers from sugarcane bagasse using formic acid-catalyzed organosolv process

et al. 2018

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A one-step formic acid-catalyzed organosolv process using a low-boiling point acid-solvent system was studied for fractionation of sugarcane bagasse. Compared to HSO, the use of formic acid as a promoter resulted in higher efficiency and selectivity on removals of hemicellulose and lignin with increased enzymatic digestibility of the cellulose-enriched solid fraction. The optimal condition from central composite design analysis was determined as 40 min residence time at 159 °C using water/ethanol/ethyl acetate/formic acid in the respective ratios of 43:20:16:21%v/v. Under this condition, a 94.6% recovery of cellulose was obtained in the solid with 80.2% cellulose content while 91.4 and 80.4% of hemicellulose and lignin were removed to the aqueous-alcohol-acid and ethyl acetate phases, respectively. Enzymatic hydrolysis of the solid yielded 84.5% glucose recovery compared to available glucan in the raw material. Physicochemical analysis revealed intact cellulose fibers with decreased crystallinity while the hemicellulose was partially recovered as mono- and oligomeric sugars. High-purity organosolv lignin with < 1% sugar cross-contamination was obtained with no major structural modification according to Fourier-transform infrared spectroscopy. The work represents an alternative process for efficient fractionation of lignocellulosic biomass in biorefineries.

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Enhancement of liquid phase splitting of water + ethanol + ethyl acetate mixtures in the presence of a hydrophilic agent or an electrolyte substance

Cited by 33 publications

References 24 publications

Liquid–liquid equilibria for mixtures containing water, methanol, fatty acid methyl esters, and glycerol

Liquid–liquid equilibria for mixtures containing water, methanol, fatty acid methyl esters, and glycerol

Phase Separation of Alcohol (1-Propanol, 2-Propanol, or tert-Butanol) from Its Aqueous Solution in the Presence of Biological Buffer MOPS

Fractionation of lignocellulosic biopolymers from sugarcane bagasse using formic acid-catalyzed organosolv process

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