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Title: | Filtration and sedimentation behaviour of fibre/particle binary suspensions |
Authors: | Chellappah, Kuhan Tarleton, E.S. Wakeman, Richard J. |
Issue Date: | 2009 |
Publisher: | Filtration Society |
Citation: | CHELLAPPAH, K., TARLETON, E.S. and WAKEMAN, R.J., 2009, Filtration and sedimentation behaviour of fibre/particle binary suspensions. Filtration, 9(4), pp.286-294. |
Abstract: | The constant pressure filtration characteristics of cellulose fibres, titanium dioxide (rutile) and
mixtures of the two were studied using a well controlled filtration apparatus. To interpret the
filtration results, relevant fibre and particle physical properties were determined and the
sedimentation behaviour of the binary suspensions quantified. The porosities (εav) of filter cakes
formed from pure fibre and rutile suspensions were approximately 0.75 and 0.6 respectively. The
general concept of additive porosity for binary mixtures agreed reasonably well with the
experimental data. With filtrations at 450 kPa, the average specific cake resistances (αav) for pure
fibre and rutile in deionised water were approximately 9.4x1013 and 4.2x1012 m kg-1 respectively,
with the variation of αav with fibre fraction showing a minimum. Similar trends were observed at
filtration pressures of 150 and 600 kPa. No minimum in αav was observed with 450 kPa filtrations
of suspensions made using 0.1 M CaCl2 solution. It is concluded that the influences of solids
composition and solution environment on αav are substantial for fibre/particle mixtures whilst the
influence of filtration pressure is less evident. |
Description: | This article was published in the journal, Filtration [Filtration Society] and is available at http://www.lboro.ac.uk/departments/cg/research/filtration/journal.htm. |
Version: | Accepted for publication |
URI: | https://dspace.lboro.ac.uk/2134/5414 |
ISSN: | 1479-0602 |
Appears in Collections: | Published Articles (Chemical Engineering)
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