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Title: On importance of surface forces in a microfluidic fluidized bed
Authors: Zivkovic, Vladimir
Biggs, Mark J.
Keywords: Interfacial tension
Multiphase flow
Micro-fluidized bed
Process intensification
Issue Date: 2015
Publisher: © Elsevier Ltd
Citation: ZIVKOVIC, V. and BIGGS, M.J., 2015. On importance of surface forces in a microfluidic fluidized bed. Chemical Engineering Science, 126, pp. 143 - 149.
Abstract: Fluidized beds potentially offer a means of significantly enhancing mixing, heat and mass transfer under the low Reynolds number flow conditions that prevail in microfluidic devices. However, as surface forces at the microscale can be significant relative to hydrodynamics forces, fluidization within a microfluidic channel can be potentially hindered or even prevented through particle adhesion to the channel walls. We have used the acid–base theory of van Oss, Chaudhury and Good to predict the propensity for adhesion of particles on microfluidic fluidized bed walls for various practically important wall material/particle/fluid combinations. Comparison of the results from this approach with experimental observations indicates that it provides a robust means of predicting the adhesion propensity. It is also demonstrated how results from the model can be used to estimate for a system of interest the particle size range in which the particle–wall surface forces transition from being dominant to being insignificant.
Description: This article was published in the journal, Chemical Engineering Science [© Elsevier Ltd] and the definitive version is available at: http://dx.doi.org/10.1016/j.ces.2014.12.023 This manuscript version is made available under the CC-BY-NC-ND 4.0 licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor: VZ acknowledges the University of Adelaide for his fellowship for research in microfluidics area.
Version: Published
DOI: 10.1016/j.ces.2014.12.023
URI: https://dspace.lboro.ac.uk/2134/18657
Publisher Link: http://dx.doi.org/10.1016/j.ces.2014.12.023
ISSN: 0009-2509
Appears in Collections:Published Articles (Chemistry)

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