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

Lee, Ming‐Jer; Lo, Yuan-Chen; Lin, Ho-mu

doi:10.1016/j.fluid.2010.10.010

Cited by 46 publications

(19 citation statements)

References 20 publications

(23 reference statements)

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“…Since ethanol increases the solubility of glycerol in the biodiesel phase, it can likely lead to separation difficulties in transesterification process. In this sense, although there is a growing industrial interest in the separation processes related to the production of components of fatty acid ethyl esters biodiesel, there are few experimental data regarding the ethyl ester, fatty acid, ethanol, water and/or glycerol available in the open literature [1,[7][8][9][10][11][12][13][14][15][16][17][18][19]. Most [17,18] and ethyl palmitate + ethanol + glycerol [19].…”

Section: Introductionmentioning

confidence: 99%

LLE for the systems ethyl palmitate (palmitic acid)(1)+ethanol(2)+glycerol (water)(3)

Kanda

Voll

Corazza

2013

Fluid Phase Equilibria

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Section: Introductionmentioning

confidence: 99%

LLE for the systems ethyl palmitate (palmitic acid)(1)+ethanol(2)+glycerol (water)(3)

Kanda

Voll

Corazza

2013

Fluid Phase Equilibria

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“…The wide immiscibility region probably occurs due to the presence of long unsaturated ester chains, that form the biodiesel, and their non-polarity, which does not favor their solubility in water and glycerol. Phase behavior of glycerol-containing systems is generally similar to that of water-containing systems as descried by Lee et al (2010).…”

Section: Systems Containing Methyl Soybean Biodiesel (2) + Water (3) mentioning

confidence: 71%

Determination of liquid-liquid equilibrium data for biodiesel containing ternary systems using near infrared technique

Beneti

Priamo²,

Lanza

et al. 2013

Braz. J. Chem. Eng.

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This work is focused on the determination of liquid-liquid equilibrium data for systems containing methyl and ethyl fatty acid esters, water, glycerol and ethanol at temperatures of 303.15 K and 318.15 K using a near-infrared spectroscopy technique (NIR). The NIR method used in this investigation provided quite satisfactory results when compared to conventional analytical techniques and hence can be used as an advantageous tool to quantify the compounds involved in the liquid-liquid equilibrium systems: i) without previous preparation of the samples; ii) with less waste generation; iii) at low cost; and iv) via a nondestructive technique, as sample analyses are made directly, showing good reproducibility and reliability of the data. The NIR method was effective in the use of different temperatures for calibration and validation of the systems under study. Besides, it is shown that extrapolation with the technique may be possible, making LLE predictions feasible for other conditions not used in the calibration procedure.

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“…Other research groups, studying LLE in the purification steps, have evaluated the LLE of systems containing alcohol, biodiesel or alkyl esters, glycerol or water (Liu et al, 2008;Beneti et al, 2010), modeled them using thermodynamic models with association parameters (Barreau et al, 2010;Oliveira et al, 2011;Andreatta et al, 2008) or using classical thermodynamic molecular models (Mesquita et al, 2011;Casas et al, 2014). In addition, some works compared molecular models with predictive models in relation to description of the LLE for this type of system (Lee et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Experimental Data, Thermodynamic Modeling and Sensitivity Analyses for the Purification Steps of Ethyl Biodiesel From Fodder Radish Oil Production

Basso

Meirelles

Batista

2017

Braz. J. Chem. Eng.

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-The goals of this work were to present original liquid-liquid equilibrium data of the system containing glycerol + ethanol + ethyl biodiesel from fodder radish oil, including the individual distribution of each ethyl ester; to adjust binary parameters of the NRTL; to compare NRTL and UNIFAC-Dortmund in the LLE representation of the system containing glycerol; to simulate different mixer/settler flowsheets for biodiesel purification, evaluating the ratio water/biodiesel used. In thermodynamic modeling, the deviations between experimental data and calculated values were 0.97% and 3.6%, respectively, using NRTL and UNIFAC-Dortmund. After transesterification, with 3 moles of excess ethanol, removal of this component until a content equal to 0.08 before an ideal settling step allows a glycerol content lower than 0.02% in the ester-rich phase. Removal of ethanol, glycerol and water from biodiesel can be performed with countercurrent mixer/settler, using 0.27% of water in relation to the ester amount in the feed stream.

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

Cited by 46 publications

References 20 publications

LLE for the systems ethyl palmitate (palmitic acid)(1)+ethanol(2)+glycerol (water)(3)

LLE for the systems ethyl palmitate (palmitic acid)(1)+ethanol(2)+glycerol (water)(3)

Determination of liquid-liquid equilibrium data for biodiesel containing ternary systems using near infrared technique

Experimental Data, Thermodynamic Modeling and Sensitivity Analyses for the Purification Steps of Ethyl Biodiesel From Fodder Radish Oil Production

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