Visual characterization of fouling with bidisperse solution


Ngene, Ikenna S. and Lammertink, Rob G.H. and Wessling, Matthias and Meer, Walter G.J. van der (2011) Visual characterization of fouling with bidisperse solution. Journal of Membrane Science, 368 (1-2). pp. 110-115. ISSN 0376-7388

[img] PDF
Restricted to UT campus only
: Request a copy
Abstract:The cake formation during filtration of a bidisperse polystyrene solution containing 3.3 and 5.7�m particles has been studied. Microfiltration membranes are used in treating feed suspensions with a wide variety of particles, of different types and sizes. These different particles determine the properties of
the cake formed during operation. Using an optical system, the local properties of the cake have been determined while simultaneously following the fouling with global methods like pressure and flow measurements. The cake thickness was measured and coupled with the resistance data. A minimum cake porosity was observed at 50% number fraction of larger particles. The measured specific cake resistance is compared to a predicted specific cake resistance obtained using the Kozeny–Carman relation incorporating a correction for the bidisperse particle distribution. The Kozeny–Carman relation showed a similar trend to the experimental results, with lower absolute values. This was suggested to be due to better ordering or compaction of the cake in some regions, which resulted in lower experimental porosities in comparison to the theoretical porosities.
Item Type:Article
Copyright:© Elsevier
Science and Technology (TNW)
Research Group:
Link to this item:
Official URL:
Export this item as:BibTeX
HTML Citation
Reference Manager


Repository Staff Only: item control page

Metis ID: 271842