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Title: The porosity, permeability and restructuring of heterogeneous filter cakes
Authors: Chellappah, Kuhan
Tarleton, E.S.
Wakeman, Richard J.
Keywords: Agglomeration
Binary
Suspensions
Filtration
Permeability
Porosity
Sedimentation
Issue Date: 2010
Publisher: © Wiley
Citation: CHELLAPPAH, K., TARLETON, E.S. and WAKEMAN, R.J., 2010. The porosity, permameability and restructuring of heterogeneous filter cakes. Chemical Engineering and Technology, 33 (8), pp.1283-1289.
Abstract: The constant pressure filtration characteristics of cellulose fibers, titania (rutile) and mixtures of the two were studied using an automated filtration apparatus. With filtrations at 450 kPa, the average permeability (kav) for pure fiber and rutile were approximately 3.2 × 10–17 and 1.3 × 10–16 m2, respectively, with the variation of kav with fiber fraction showing a maximum. Similar trends were observed at filtration pressures of 150 and 600 kPa. The porosities (ϵav) of filter cakes formed from pure fiber and rutile suspensions were approximately 0.75 and 0.6, respectively. Interparticle penetration and additive porosity models were applied to the porosity data, and the additive porosity model appeared to better represent the experimental data. Also, the results obtained suggest that abrupt transitions in cake structure occur part way through some filtrations, resulting in anomalous filtration behavior.
Description: This item is closed access.
Version: Closed access
DOI: 10.1002/ceat.201000093
URI: https://dspace.lboro.ac.uk/2134/6622
Publisher Link: http://dx.doi.org/10.1002/ceat.201000093
ISSN: 1521-4125
Appears in Collections:Closed Access (Chemical Engineering)

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