Liquid-liquid equilibrium data for the system water-benzonitrile-methanol

1989 ◽  
Vol 34 (4) ◽  
pp. 382-384 ◽  
Author(s):  
Gustavo J. Botto ◽  
Horacio H. Agaras ◽  
Carlos M. Marschoff
Keyword(s):  
Liquid Equilibrium ◽  
Equilibrium Data ◽  
System Water

Influence of temperature on the liquid-to-liquid extraction of ethanol from (water + ethanol + 1,2-dichloroethane)

1992 ◽  
Vol 70 (8) ◽  
pp. 2310-2313 ◽  
Author(s):  
Horacio N. Sólimo ◽  
José L. Zurita
Keyword(s):  
Experimental Data ◽  
Conjugate Points ◽  
Liquid Equilibrium ◽  
Experimental Conditions ◽  
Influence Of Temperature ◽  
Equilibrium Data ◽  
Tie Lines ◽  
Influence Of Temperature On ◽  
Tie Line ◽  
System Water

To evaluate the influence of temperature on the extraction of ethanol from aqueous solutions with 1,2-dichloroethane, liquid–liquid equilibrium data for the system water + ethanol + 1,2-dichloroethane were obtained at 298.15, 308.15, and 318.15 K. The binodal curves were determined by the cloud-point method, and conjugate points on the tie-lines were obtained by correlating the refractive index of these curves as a function of composition. The tie-line data at each temperature were satisfactorily correlated using the method of Othmer and Tobias, and the plait-point coordinates were estimated. The experimental data were also compared to values calculated by the UNIFAC group contribution method for the activity coefficients using the isoactivity conditions as restraint equations, and with the NRTL and UNIQUAC models. The UNIFAC method proved to be more accurate than the NRTL and UNIQUAC equations fitted to the experimental data. Under the experimental conditions used, ethanol extraction by 1,2-dichloroethane appears to be independent of the temperature.

scholarly journals LIQUID-LIQUID EQUILIBRIA OF THE WATER+ETHANOL+DIMETHYL ADIPATE TERNARY SYSTEM

2002 ◽  
Vol 10 (11) ◽  
pp. 19-31
Author(s):  
Erol Ince ◽  
S. ismail Kirbaslar
Keyword(s):  
Experimental Data ◽  
Phase Equilibrium ◽  
Distribution Coefficients ◽  
Liquid Equilibrium ◽  
Immiscibility Region ◽  
Separation Factors ◽  
Equilibrium Data ◽  
Dimethyl Adipate ◽  
Tie Line ◽  
System Water

Liquid-liquid equilibrium data for the terna1y system water-ethanol-dimethyl adipate (dibasic ester) have been determined experimentally at 298.15±0.20, 308.15±0.20, and 318.15±0.20 K. Tie-line compositions were correlated by the Othmer-Tobias method. The UNIFAC method was used to predict the phase equilibrium in the system using the interaction parameters determined from experimental data between the CH3, CH2, OH, CH3COO and H20 groups. Distribution coefficients and separation factors were evaluated for the immiscibility region

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