Dynamic adsorption of surfactants at the gas-liquid interface

Nguyen, Anh V., Phan, Chi M., Evans, Geoffrey M. and Jameson, Graeme J. (2005). Dynamic adsorption of surfactants at the gas-liquid interface. In: C. A. Young, J. J. Kellar, M. L. Free, J. Drelich and R. P. King, Innovations in natural resource processing: Proceedings of the Jan. D. Miller Symposium. 2005 SME Annual Meeting, Salt Lake City, U.S., (87-98). 28 February - 2 March 2005.

Author Nguyen, Anh V.
Phan, Chi M.
Evans, Geoffrey M.
Jameson, Graeme J.
Title of paper Dynamic adsorption of surfactants at the gas-liquid interface
Conference name 2005 SME Annual Meeting
Conference location Salt Lake City, U.S.
Conference dates 28 February - 2 March 2005
Proceedings title Innovations in natural resource processing: Proceedings of the Jan. D. Miller Symposium
Journal name Proceedings of the Jan D. Miller Symposium - Innovations in Natural Resource Processing
Place of Publication Littleton. U.S.
Publisher Society for Mining, Metallurgy, and Exploration
Publication Year 2005
Sub-type Fully published paper
ISBN 0873352416
9780873352413
Editor C. A. Young
J. J. Kellar
M. L. Free
J. Drelich
R. P. King
Volume 2005
Start page 87
End page 98
Total pages 12
Language eng
Abstract/Summary Surfactants are used to control the interfacial properties of the gas-liquid and liquid-solid interfaces in flotation. This paper investigates the dynamic adsorption of surfactants at the gas-liquid interface. The dynamic adsorption process was modeled by considering the surfactant mass transfer to the gas-liquid interface by diffusion and the Langmuir and Frumkin adsorption isotherms. The numerical computation was applied to solve the non-linear governing equations. The dynamic adsorption was measured in terms of the dynamic surface tension using the pendant drop method. The theoretical models were compared against the experimental data obtained with non-ionic (Dowfroth 250) and ionic (sodium doderyIbenzene sulfate, SDBS) surfactants. The theoretical results agreed well with the experimental data for SDBS, but not for Dowfrother 250, especially for the initial stage. Reasons for the variation in results are given in the paper
Subjects 0914 Resources Engineering and Extractive Metallurgy
Keyword Surfactants
Gas-liquid interface
Dynamic adsorption process
Diffusion
Sodium doderyIbenzene sulfate
Dowfroth 250
Q-Index Code EX
Additional Notes Section 2. Interfacial Phenomena

 
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Created: Thu, 17 Dec 2009, 09:28:14 EST by Michael Affleck on behalf of Faculty Of Engineering, Architecture & Info Tech