scholarly journals New Tie Line Correlation and its Presumption Method for Ternary Liquid Equilibrium

1969 ◽  
Vol 33 (4) ◽  
pp. 349-352,a1
Author(s):  
Akikazu Nakamura
Keyword(s):  
Liquid Equilibrium ◽  
Tie Line

Systematic errors in equilibrium composition of ternary liquid-liquid systems and their effect on the calculated number of theoretical stages of countercurrent extraction

1988 ◽  
Vol 53 (6) ◽  
pp. 1172-1180
Author(s):  
Ján Dojčanský ◽  
Soňa Bafrncová ◽  
Július Surový
Keyword(s):  
Equilibrium Composition ◽  
Systematic Errors ◽  
Liquid Equilibrium ◽  
Countercurrent Extraction ◽  
Liquid Systems ◽  
Equilibrium Concentrations ◽  
Line Slope ◽  
Tie Line ◽  
Calculated Number

The influence of magnitude of systematic errors in the determination of ternary liquid-liquid equilibrium concentrations on the accuracy of the calculated number of theoretical stages of countercurrent extraction is evaluated on using five hypothetical systems differing in the extent of mutual solubility of components, tie-line slope, and type of binodal curve.

The effect of systematic errors of the equilibrium distribution concentrations on the number of stages of countercurrent extraction with various consumption of extractant

1989 ◽  
Vol 54 (4) ◽  
pp. 981-989
Author(s):  
Ján Dojčanský ◽  
Soňa Bafrncová ◽  
Július Surový
Keyword(s):  
Equilibrium Distribution ◽  
Systematic Errors ◽  
Mutual Solubility ◽  
Operating Conditions ◽  
Liquid Equilibrium ◽  
Countercurrent Extraction ◽  
Absolute Deviation ◽  
Line Slope ◽  
Tie Line ◽  
Calculated Number

On using five hypothetical systems differing in the extent of mutual solubility of components, tie-line slope, and type of binodal curve, the effect is evaluated of systematic errors in the form of absolute deviation in the liquid-liquid equilibrium distribution concentrations on the accuracy of calculated number of theoretical stages of isothermal countercurrent extraction under various operating conditions.

Liquid-Liquid Equilibria for Acetone + Several Citrates Aqueous Two-Phase Systems at Different Temperatures

2012 ◽  
Vol 549 ◽  
pp. 30-35
Author(s):  
Shi Ping Hu ◽  
Juan Han ◽  
Yong Sheng Yan ◽  
Yu Tao Hu
Keyword(s):  
Ternary Systems ◽  
Data Fitting ◽  
Potassium Citrate ◽  
Liquid Equilibrium ◽  
Two Phase ◽  
Different Temperatures ◽  
Tie Lines ◽  
Aqueous Two Phase Systems ◽  
Phase Systems ◽  
Tie Line

Liquid-liquid equilibria for the three kinds of the ternary systems acetone + ammonium, sodium or potassium citrate + water have been determined at T= (273.15, 283.15, and 298.15) K. Binodal curves, tie-lines, and integrated phase diagrams for the ternary systems are given. The data of the experimental bimodal curve are described with a four-parameter equation. The result also shows the temperature has little influence on the liquid-liquid equilibrium within the investigated range. The tie-line data calculated according to the bimodal data fitting equation and the lever arm rule were satisfactorily described by using the Othmer-Tobias and Bancroft equations, and the result conform the reliability of the calculation method and corresponding tie-line data.

(Liquid + Liquid) Equilibrium for Ternary System of (Water + Phenol + Cyclohexane) at T = 298.2 K

2013 ◽  
Vol 3 (2) ◽  
pp. 75-84
Author(s):  
Hossein Ghanadzadeh ◽  
Milad Sangashekan ◽  
Shahin Asan
Keyword(s):  
Ternary System ◽  
Root Mean Square ◽  
Atmospheric Pressure ◽  
Distribution Coefficients ◽  
Mean Square ◽  
Liquid Equilibrium ◽  
Separation Factors ◽  
Experimental Solubility ◽  
Tie Line

Experimental solubility curves and tie-line data for the (water + phenol + 2-ethyl-1-hexanol) system was obtained at T = 298.2 K and atmospheric pressure. The tie-line data was determined by techniques karl-fischer and refractometry. This ternary system exhibits type-2 behavior of LLE. Distribution coefficients and separation factors were measured to evaluate the extracting ability of the solvent. The consistency of the experimental tie-line data was determined through the Othmer–Tobias and Bachman equations. The data were correlated with the NRTL (a = 0.25) and UNIQUAC models and the parameters estimated present root mean square deviations below 0.50%.

Liquid-Liquid Equilibria for Linalool in Aqueous Alcohol Mixtures

2013 ◽  
Vol 634-638 ◽  
pp. 1022-1025 ◽  
Author(s):  
Heng De Li ◽  
Cheng Huang ◽  
Xiao Zhong Ma ◽  
Yu Qing Feng
Keyword(s):  
Atmospheric Pressure ◽  
Ternary Mixtures ◽  
Aqueous Alcohol ◽  
Liquid Equilibrium ◽  
Uniquac Model ◽  
Extended Uniquac ◽  
Extended Uniquac Model ◽  
Equilibrium Data ◽  
Ethanol System ◽  
Tie Line

Liquid-liquid equilibrium tie-line data were examined at atmospheric pressure and at 298.15 K for ternary mixtures of (water + methanol + linalool) as well as (water + ethanol + linalool). The distribution ratios of alcohol between organic and aqueous phases are discussed. The immiscible area of (water + methanol + linalool) system is wider than that for the ethanol system. The experimental liquid–liquid equilibrium data were satisfactorily fitted by means of an extended UNIQUAC model.

Liquid-Liquid Equillibria for the (Water + Methanol + Citral) System at 283.15 and 313.15 K

2013 ◽  
Vol 634-638 ◽  
pp. 408-411 ◽  
Author(s):  
Cheng Huang ◽  
Heng De Li ◽  
Yan Yan ◽  
Yong Tao Han
Keyword(s):  
Atmospheric Pressure ◽  
Liquid Equilibrium ◽  
Uniquac Model ◽  
Extended Uniquac ◽  
Extended Uniquac Model ◽  
Equilibrium Data ◽  
Tie Line

Isobaric liquid-liquid equilibrium tie-line data were determined at atmospheric pressure and at 283.15 and 313.15 K for the mixture (water + methanol +citral). The miscibility for the ternary (water + methanol + citral) LLE was increasing as the temperature increased. The experimental liquid–liquid equilibrium data have been satisfactorily represented by using an extended UNIQUAC model.

scholarly journals Liquid-Liquid Equilibrium Data for the Ionic Liquid N-Ethyl-Pyridinium Bromide with Several Sodium Salts and Potassium Salts

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Yuliang Li ◽  
Xiaojia Lu ◽  
Jing Hao ◽  
Changquan Chen
Keyword(s):  
Correlation Coefficients ◽  
Liquid Equilibrium ◽  
Two Phase ◽  
Salting Out ◽  
Pyridinium Bromide ◽  
Equilibrium Data ◽  
Aqueous Two Phase Systems ◽  
Phase Systems ◽  
Lle Data ◽  
Tie Line

The liquid-liquid equilibrium (LLE) data for systems containing N-ethyl-pyridinium bromide ([EPy]Br), salt (Na2HPO4,K2HPO4,K2SO4,C4O6H4KNa), and water have been measured experimentally atT=298.15 K and the formations of these four aqueous two-phase systems (ATPSs) have been discussed. Also, the effective excluded volume (EEV) values obtained from the binodal models for the four systems were determined and the salting-out abilities of different salts follow the order ofK2SO4>K2HPO4>Na2HPO4>C4O6H4KNa. The solubility data were correlated by the Merchuk and other equations while the tie-line data by the Othmer-Tobias, Bancroft, two-parameter, and Setschenow-type equations. The correlation coefficients evidenced that experimental data fitted well to all these equations. These four salts were proved successfully to form ATPSs with N-ethyl-pyridinium bromide, making a significant contribution to the further study of this kind of ATPS.

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.

Liquid-Liquid Equilibria for Geraniol in Aqueous Alcohol Mixtures

2011 ◽  
Vol 396-398 ◽  
pp. 908-911
Author(s):  
Heng De Li ◽  
Tian Fei Zhang ◽  
Yan Yan ◽  
Lin Chen ◽  
Ling Ling Hu
Keyword(s):  
Ternary Mixtures ◽  
Aqueous Alcohol ◽  
Liquid Equilibrium ◽  
Uniquac Model ◽  
Extended Uniquac ◽  
Extended Uniquac Model ◽  
Equilibrium Data ◽  
Alcohol Mixtures ◽  
Ethanol System ◽  
Tie Line

Liquid-liquid equilibrium tie-line data were examined for ternary mixtures of (water + methanol + geraniol) and (water + ethanol + geraniol) at 298.15 K. The distribution ratios of alcohol between organic and aqueous phases are discussed. The immiscible area of (water + methanol + geraniol) system is wider than that for the ethanol system. The experimental liquid–liquid equilibrium data have been satisfactorily represented by using an extended UNIQUAC model.

Random errors in equilibrium composition of ternary liquid-liquid systems and their effect on the calculated number of theoretical stages of countercurrent extraction

1988 ◽  
Vol 53 (1) ◽  
pp. 34-44
Author(s):  
Ján Dojčanský ◽  
Soňa Bafrncová ◽  
Július Surový
Keyword(s):  
Equilibrium Composition ◽  
Random Errors ◽  
Liquid Equilibrium ◽  
Liquid Systems ◽  
Equilibrium Concentrations ◽  
Line Slope ◽  
Tie Line ◽  
Calculated Number ◽  
Countercurrent Extractor

The influence of size of random errors in the determination of ternary liquid-liquid equilibrium concentrations on the accuracy of the calculated number of theoretical stages of a countercurrent extractor is evaluated by using five hypothetical systems differing in the extent of mutual solubility of components, tie-line slope, and type of binodal curve.

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