Determination of particle-release conditions in microfiltration: a simple single-particle model rested on a model membrane

Kuiper, S. and Rijn van, C.J.M. and Nijdam, W. and Krijnen, G.J.M. and Elwenspoek, M.C. (2000) Determination of particle-release conditions in microfiltration: a simple single-particle model rested on a model membrane. Journal of Membrane Science, 180 (1). pp. 15-28. ISSN 0376-7388

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Abstract:	A simple single-particle model was developed for cross-flow microfiltration with microsieves. The model describes the cross-flow conditions required to release a trapped spherical particle from a circular pore. All equations are derived in a fully analytical way without any fitting parameters. For experimental verification of the model ultra-thin microsieves of uniform pore size and distribution were used. The release of trapped particles (polystyrene spheres and yeast cells) was determined by flux measurements as well as by in-line observation through a microscope. The results show that the model gives a fairly good indication of what cross-flow should be applied to keep the pores free for the conditions specified in this paper. In addition it provides us with a simple rule of thumb for the design of cross-flow modules for microsieves. It describes which geometrical demands have to be met to enable filtration without pore blocking, again for the conditions specified in this paper.
Item Type:	Article
Copyright:	© 2000 Elsevier Science
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Transducers Science and Technology (TST)
Link to this item:	http://purl.utwente.nl/publications/14635
Official URL:	http://dx.doi.org/10.1016/S0376-7388(00)00430-0
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