CALCULATION OF PHASE-EQUILIBRIA FOR SOLUTIONS OF STRONG ELECTROLYTES IN SOLVENT WATER MIXTURES

• Type: Article in International Scientific Journal
• Date: 1990

Authors

Maria Eugénia Macedo (Author) FEUP; SKOVBORG, P (Author) Other; RASMUSSEN, P (Author) Other

Journal

Title: Chemical Engineering Science

Vol. 45

Pages: 875-882

ISSN: 0009-2509

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 135 Citations

ISI Web of Science

Scopus - 155 Citations

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

Authenticus ID: P-001-S2H

DOI: 10.1016/0009-2509(90)85009-3

Abstract (EN): The Sander model for correlation and prediction of salt effects on vapor-liquid equilibria (VLE) combines a Debye-Hückel-type term with a modified UNIQUAC equation with concentration-dependent-parameters. The Debye-Hückel term has in this work been modified to ensure a more correct representation of the long-range forces. The modification has required a reestimation of previously published interaction parameters. It is shown that the modified model represents VLE for alcohol-water-salt mixtures with the same accuracy as the Sander model. The modified model has a broader range of applicability than the Sander model since the solvents acetone and 1-butanol have been added to water methanol ethanol, 1- and 2-propanol, and the ions Cu2+, Ba2+, Ni2+ Hg2+ Sr2+, F-, and I- have been included besides Li+, Na+, K+, Ca2+, Cl-, Br-, NO-3 and CH3COO-. © 1990.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8