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Application of a SAFT-VR equation of state using MSA and a yukawa potential for VLE calculations of electrolyte solutions

Behzadi, B ; Sharif University of Technology | 2005

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  1. Type of Document: Article
  2. Publisher: 2005
  3. Abstract:
  4. An EOS based on the statistical associating fluid theory generalized to include potentials of variable range was applied to pure associating solvents (water, n-propanol, i-propanol, n-butanol, and n-pentanol) and more commonly encountered electrolyte solutions containing the ions Li+, Na+, K+, Ca++, Br--, Cl-, I-, OH-, and NO 3-. The model incorporated the Yukawa attraction potential for segment-segment interactions between solvent segments and also for the segment-ion interactions, and the non-restricted mean-spherical approximation to account for the long-range interactions between ionic species. The resulting model could correlate VLE for the pure solvents and binary solvent/salt mixtures accurately, using a minimum number of regressed temperature and concentration-independent interaction energy, interaction range and size parameters, which have been obtained, in both salt-specific and ion-specific forms, using a global optimization procedure. This is an abstract of a paper presented at the 7th World Congress of Chemical Engineering (Glasgow, Scotland 7/10-14/2005)
  5. Keywords:
  7. Source: 7th World Congress of Chemical Engineering, GLASGOW2005, incorporating the 5th European Congress of Chemical Engineering, Glasgow, Scotland, 10 July 2005 through 14 July 2005 ; 2005 , Pages 59-60 ; 0852954948 (ISBN); 9780852954942 (ISBN)