Characteristics of activity coefficient models for liquid solutions

AIChE Journal ◽  
2004 ◽  
Vol 50 (4) ◽  
pp. 854-861 ◽  
Author(s):  
Philip T. Eubank ◽  
Xiaonian Wang
Keyword(s):  
Activity Coefficient ◽  
Liquid Solutions ◽  
Activity Coefficient Models

Measurement and Modeling of Solubility of Galactose in Aqueous Ionic Liquids, 1-Butyl-3-Methyl Imidazolium Bromide, 1-Hexyl-3-Methyl Imidazolium Bromide and 1-Butyl-3-Methylimidazolium Chloride at T = (298.15 And 308.15) K

2019 ◽  
Vol 25 (4) ◽  
pp. 319-330
Author(s):  
Mohammad Taghi Zafarani-Moattar ◽  
Hemayat Shekaari ◽  
Elnaz Mazaher Haji Agha
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Activity Coefficient ◽  
Aqueous Solutions ◽  
Mole Fraction ◽  
Gravimetric Method ◽  
Green Solvents ◽  
Salting Out ◽  
Liquid Solutions ◽  
Activity Coefficient Models

Background: Saccharides are considered as abundant, cheap and renewable starting materials for chemicals and fuels. Recently, ionic liquids have been used as green solvents for saccharides. The solubility values of galactose in aqueous ionic liquid solutions are not available. Thus, the main objective of this research was to determine the solubility of galactose in aqueous solutions containing ionic liquids, 1-butyl-3-methyl imidazolium bromide, [BMIm]Br, 1-butyl-3-methylimidazolium chloride [BMIm]Cl and 1-hexyl-3-methyl imidazolium bromide, [HMIm]Br at different mole fractions of ionic liquids at T = (298.15 and 308.15) K. Methods: In this study, the gravimetric method was used to measure the solubility of galactose in aqueous ionic liquids solutions. Results: The solubility values of galactose in water and aqueous ionic liquid solutions were correlated with the activity coefficient models of Wilson, NRTL, modified NRTL, NRF-NRTL, and UNIQUAC. Conclusion: It was concluded that with increasing the mole fraction of ionic liquids, the solubility values of galactose decrease and in fact all of these ionic liquids show salting-out effect on aqueous galactose solutions and this behavior is stronger in ionic liquid 1-butyl-3-methylimidazolium chloride.

Revisiting the Classic Activity Coefficient Models

2021 ◽  
Author(s):  
Walter W. Focke ◽  
Stefan Endres ◽  
Elizabeth L. du Toit ◽  
Mattheüs T. Loots ◽  
Roelof L. J. Coetzer
Keyword(s):  
Activity Coefficient ◽  
Activity Coefficient Models

Dispersion activity coefficient models. Part 1: Cubic equations of state

2019 ◽  
Vol 501 ◽  
pp. 112275 ◽  
Author(s):  
Gerard J.P. Krooshof ◽  
Remco Tuinier ◽  
Gijsbertus de With
Keyword(s):  
Activity Coefficient ◽  
Equations Of State ◽  
Activity Coefficient Models

Dispersion activity coefficient models. Part 2: Perturbed chain equations of state

2019 ◽  
Vol 502 ◽  
pp. 112286
Author(s):  
Gerard J.P. Krooshof ◽  
Remco Tuinier ◽  
Gijsbertus de With
Keyword(s):  
Activity Coefficient ◽  
Equations Of State ◽  
Activity Coefficient Models

scholarly journals COSMOSPACE: Alternative to conventional activity-coefficient models

AIChE Journal ◽  
2002 ◽  
Vol 48 (10) ◽  
pp. 2332-2349 ◽  
Author(s):  
Andreas Klamt ◽  
Gerard J. P. Krooshof ◽  
Ross Taylor
Keyword(s):  
Activity Coefficient ◽  
Activity Coefficient Models
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