Adsorption and surface tension analysis of concentrated alkali halide brine solutions

Ozdemir, Orhan, Karakashev, Stoyan I., Nguyen, Anh V. and Miller, Jan D. (2009) Adsorption and surface tension analysis of concentrated alkali halide brine solutions. Minerals Engineering, 22 3: 263-271. doi:10.1016/j.mineng.2008.08.001

Author Ozdemir, Orhan
Karakashev, Stoyan I.
Nguyen, Anh V.
Miller, Jan D.
Title Adsorption and surface tension analysis of concentrated alkali halide brine solutions
Journal name Minerals Engineering   Check publisher's open access policy
ISSN 0892-6875
Publication date 2009-02
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.mineng.2008.08.001
Volume 22
Issue 3
Start page 263
End page 271
Total pages 9
Editor B. A. Wills
Place of publication Oxford, United Kingdom
Publisher Pergamon Press
Language eng
Subject 091404 Mineral Processing/Beneficiation
Abstract In this study, the equilibrium and dynamic surface tensions of sodium chloride and potassium chloride solutions have been measured as a function of concentration up to saturation (5.2 M for NaCl and 4.1 M for KCl) using sessile bubble tensiometry. The experimental results show that the surface tension of these and other salts significantly increases with increasing concentration due to negative adsorption of ions at the air/brine interface, regardless of their structure maker and breaker nature. Furthermore, the effect of these salts on the surface tension of aqueous solutions of sodium dodecyl sulfate (SDS) and methyl isobutyl carbinol (MIBC) was also studied. These results show that the salts increased the surface activity of SDS and MIBC. In the case of SDS, KCl increased the surface activity of SDS more significantly than NaCl did. In the case of MIBC, the effect of NaCl on MIBC surface activity was more significant than that of KCl. Copyright © 2008 Elsevier Ltd All rights reserved.
Keyword Sodium chloride and potassium chloride
Surface tension
Water structure maker and breaker
Soluble salt flotation
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown
Additional Notes Available online 27 September 2008.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Chemical Engineering Publications
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Created: Thu, 03 Sep 2009, 08:35:15 EST by Mr Andrew Martlew on behalf of School of Chemical Engineering