Novel methodology for predicting the critical salt concentration of bubble coalescence inhibition

Firouzi, Mahshid and Nguyen, Anh V. (2014) Novel methodology for predicting the critical salt concentration of bubble coalescence inhibition. Journal of Physical Chemistry C, 118 2: 1021-1026. doi:10.1021/jp409473g

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Author Firouzi, Mahshid
Nguyen, Anh V.
Title Novel methodology for predicting the critical salt concentration of bubble coalescence inhibition
Journal name Journal of Physical Chemistry C   Check publisher's open access policy
ISSN 1932-7447
Publication date 2014-01-16
Year available 2014
Sub-type Article (original research)
DOI 10.1021/jp409473g
Open Access Status File (Author Post-print)
Volume 118
Issue 2
Start page 1021
End page 1026
Total pages 6
Place of publication Washington, DC United States
Publisher American Chemical Society
Language eng
Subject 1606 Political Science
2504 Electronic, Optical and Magnetic Materials
2508 Surfaces, Coatings and Films
2100 Energy
Abstract Bubble coalescence in some salt solutions can be inhibited if the salt concentration reaches a critical concentration Ccr. There are three models available for Ccr in the literature, but they fail to predict Ccr correctly. The first two models employ the van der Waals attraction power laws to establish Ccr from the discriminant of quadratic or cubic polynomials. To improve the two models, the third model uses the same momentum balance equation of the previous models but different intermolecular force generated by water hydration with exponential decaying. The third prediction for Ccr requires the experimental input for film rupture thickness and is incomplete. We show further in this paper that the third model is incorrect. We propose a novel methodology for determining C cr which resolves the mathematical uncertainties in modeling C cr and can explicitly predict it from any relevant intermolecular forces. The methodology is based on the discovery that Ccr occurs at the local maximum of the balance equation for the capillary pressure, disjoining pressure, and pressure of the Gibbs-Marangoni stress. The novel generic approach is successfully validated using nonlinear equations for complicated disjoining pressure.
Keyword Chemistry, Physical
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Science & Technology - Other Topics
Materials Science
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID DP0985079
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2015 Collection
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Citation counts: TR Web of Science Citation Count  Cited 6 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 8 times in Scopus Article | Citations
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