Surface coverage of filter medium in deep bed filtration : mathematical modelling and experiments

Jegatheesan, V. and Vigneswaran, S. 2000, Surface coverage of filter medium in deep bed filtration : mathematical modelling and experiments, Separation science and technology, vol. 35, no. 7, pp. 967-987, doi: 10.1081/SS-100100205.

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Title Surface coverage of filter medium in deep bed filtration : mathematical modelling and experiments
Author(s) Jegatheesan, V.
Vigneswaran, S.
Journal name Separation science and technology
Volume number 35
Issue number 7
Start page 967
End page 987
Total pages 21
Publisher Taylor & Francis
Place of publication Philadelphia, Pa.
Publication date 2000
ISSN 0149-6395
Keyword(s) deep bed filtration
filter grain surface
ionic strength
latex particles
mass concentration
number concentration
monolayer deposition
specific surface coverage
surface area concentration
Summary This paper highlights the importance of surface coverage in modeling the removal of particles in deep bed filtration. A model that considers the saturation of sites on which particle deposition occurs is used. Experimental results obtained with monodispersed suspensions of 0.46 and 0.816 μm latex particles at different influent concentrations and ionic strengths were used to calculate the fraction of filter grain surface (β1) on which actual particle deposition occurs. This will be useful in evaluating the filter performance in terms of the utilization of available surface area of the filter medium. Further, the level of dendrite formation of particles on filter grains during filtration is expressed in terms of β1 and the specific surface coverage, θT (the fraction of a filter grain surface that is covered by particles at time T, assuming that the filter grain is covered by a monolayer of particles). This can be used to compare the contribution of deposited particles in the removal efficiency of deep bed filtration for suspensions with different physical and chemical characteristics.
Language eng
DOI 10.1081/SS-100100205
Field of Research 099999 Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
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Document type: Journal Article
Collection: School of Engineering
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