Table of Contents
Journal of Thermodynamics
Volume 2015, Article ID 319704, 8 pages
Research Article

Thermodynamic Modeling of Surface Tension of Aqueous Electrolyte Solution by Competitive Adsorption Model

1Department of Chemical Engineering, Islamic Azad University, Bushehr Branch, Bushehr 751961955, Iran
2National Iranian Gas Company (NIGC), Fajr-e Jam Gas Company, Bushehr, Iran

Received 14 August 2015; Accepted 4 October 2015

Academic Editor: Marc D. Donohue

Copyright © 2015 Mohamad Javad Kamali et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Thermodynamic modeling of surface tension of different electrolyte systems in presence of gas phase is studied. Using the solid-liquid equilibrium, Langmuir gas-solid adsorption, and ENRTL activity coefficient model, the surface tension of electrolyte solutions is calculated. The new model has two adjustable parameters which could be determined by fitting the experimental surface tension of binary aqueous electrolyte solution in single temperature. Then the values of surface tension for other temperatures in binary and ternary system of aqueous electrolyte solution are predicted. The average absolute deviations for calculation of surface tension of binary and mixed electrolyte systems by new model are 1.98 and 1.70%, respectively.