Liquid—liquid equilibrium in tihe system glycerol—water—acetone at 25°C

Krishna, Rajamani; Low, Chong Yu; Newsham, D.M.T.; Olivera-Fuentes, Claudio; Paybarah, A.

doi:10.1016/0378-3812(89)80170-0

Cited by 16 publications

(19 citation statements)

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“…Average deviation between experimental and calculated values for readjustment of the NRTL binary parameters for the system ethanol (2) + FAEE from fodder radish oil (3) + water (4), presented by Basso et al (2014), calculated according to Equation (9) was 1.22%, and the maximum deviation per tie line was 2.35%, showing a proper description of the experimental data by the molecular thermodynamic model. (2), FAEE from fodder radish oil (3), water (4) b binary parameters obtained from the literature (Krishna et al 1989).…”

Section: Resultsmentioning

confidence: 99%

“…The adjusted/readjusted NRTL parameters used in all simulations are presented in Table 4. NRTL binary interaction parameters for the components water and glycerol were obtained directly from the literature (Krishna et al, 1989). Average deviation between experimental and calculated values for readjustment of the NRTL binary parameters for the system ethanol (2) + FAEE from fodder radish oil (3) + water (4), presented by Basso et al (2014), calculated according to Equation (9) was 1.22%, and the maximum deviation per tie line was 2.35%, showing a proper description of the experimental data by the molecular thermodynamic model.…”

Section: Resultsmentioning

confidence: 99%

“…Considering the components glycerol (1), ethanol (2), FAEE from fodder radish oil (3) and water (4), the NRTL binary parameters for component pairs (12), (13) and (23) were obtained from the original experimental data presented in this work; the NRTL binary parameters for component pairs (24) and (34) were readjusted in this work from data presented by Basso et al (2014); and the NRTL binary parameters for component pair (14) were obtained by Krishna et al (1989).…”

Section: Simulation and Sensitivity Analysesmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Simulation and Sensitivity Analysesmentioning

confidence: 99%

See 1 more Smart Citation

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 line divides the two-liquid-phase area into upper and lower parts. Since the upper part is much smaller than the lower, glycerol cannot be utilized as a solvent in separating mixtures of 1, 4-dioxane (2) and water (3) in the vicinity of the azeotropic point.…”

Section: Capability Of Glycerol As a Solvent For Liquid-liquid Extracmentioning

confidence: 99%

“…K by Hampe and Schermuly [2], and Krishna et al [3], respectively, but the LLE of the last two systems have not been studied.…”

Section: Introductionmentioning

confidence: 99%

Liquid-Liquid Equilibria of Three Ternary Systems: Glycerol + Acetone + Water, Glycerol + 1, 4-Dioxane + Water, and Glycerol + Acetonitrile + Water

Katayama

Satoh

2015

SERDJ

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Liquid-liquid equilibria of three ternary systems {glycerol + acetone + water}, {glycerol + 1, 4-dioxane + water}, and {glycerol + acetonitrile + water} were measured at temperatures of 288.15, 298.15, and 308.15 K. The results of the first two systems were satisfactorily correlated with the UNIQUAC equation with average deviations of 0.74 and 0.81%, respectively. Those of the last system were well correlated with a deviation of 2.49%. Glycerol was verified as a suitable solvent to remove water from acetone + water and acetonitrile + water solutions, through investigation of the distribution coefficients and selectivity for water, combining vapor-liquid equilibria of the systems {acetone + water} and {acetonitrile + water} at atmospheric pressure.

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Measurement of Diffusion in Ternary Liquid Mixtures by Light Scattering Technique and Comparison with Taylor Dispersion Data

Ivanov

Winkelmann

2007

Int J Thermophys

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Results of diffusion coefficient measurements by dynamic light scattering (DLS) in the ternary liquid systems, glycerol-acetone-water (GAW), and cyclohexane-methanol-toluene (CMT), are reported. Data for the GAW system are compared with Taylor dispersion (TD) measurements in overlapping concentration regions close to the critical solution point at 298.15 K. A fit of the intensity autocorrelation function (ACF) could be used to predict values and explain the physical character of the corresponding diffusion coefficients. In the vicinity of the critical solution point, the DLS measurements reveal two and more hydrodynamic relaxation modes with well separated characteristic relaxation times. From the ACF, at least two effective diffusivities, D 1 and D 2 , can be experimentally determined. Theoretical predictions reveal that they may result from pure mass diffusion and pure thermal diffusion transport processes. A possible physical meaning of the modes D 1 and D 2 in the ternary liquid mixtures is discussed. When we compare the transport modes from DLS with the Taylor dispersion results, only the slowest mode represents mass diffusion, and this mode agrees very well with one of the eigenvalues of Fick's diffusion matrix. There is no relation between the mass diffusion mode from DLS and any one of the four diffusion coefficients obtained by TD.

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Liquid—liquid equilibrium in tihe system glycerol—water—acetone at 25°C

Cited by 16 publications

References 1 publication

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

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

Liquid-Liquid Equilibria of Three Ternary Systems: Glycerol + Acetone + Water, Glycerol + 1, 4-Dioxane + Water, and Glycerol + Acetonitrile + Water

Measurement of Diffusion in Ternary Liquid Mixtures by Light Scattering Technique and Comparison with Taylor Dispersion Data

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