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Influence of particle concentration on initial collection efficiency and surface coverage in porous media filtration

Ng, Wai K., Jegatheesan, Veeriah and Lee, Seung-Hwan 2006, Influence of particle concentration on initial collection efficiency and surface coverage in porous media filtration, Korean journal of chemical engineering, vol. 23, no. 2, pp. 333-342, doi: 10.1007/BF02705738.

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Title Influence of particle concentration on initial collection efficiency and surface coverage in porous media filtration
Author(s) Ng, Wai K.
Jegatheesan, Veeriah
Lee, Seung-Hwan
Journal name Korean journal of chemical engineering
Volume number 23
Issue number 2
Start page 333
End page 342
Publisher Springer New York LLC
Place of publication New York, N. Y.
Publication date 2006
ISSN 0256-1115
1975-7220
Keyword(s) collision efficiency
initial single collector efficiency
ionic strength
latex particles
porous media filtration
specific surface coverage
Summary Four sizes (0.095, 0.53, 1.0 and 2.01 μm) of polystyrene latex particles were used to prepare monodispersed suspensions at three different ionic strengths (10−3, 10−2.5 and 10−2M KCl). Filtration experiments were conducted using those suspensions in a filter column with glass beads as porous medium. The filter bed depth and the filtration velocity were kept at 5 cm and 1 m/h, respectively. When suspensions with equal mass concentrations (0.2 mg/L) or equal surface area concentrations (0.12 cm2/mL) were filtered through the system, the largest particles exhibited higher initial single collector efficiency, η. The difference between the η of largest particles and the smaller particles was prominent for suspensions with equal surface area concentrations at higher ionic strengths. The collision efficiency, α of those particles exhibits higher values at higher ionic strengths. Both at equal mass concentration and equal surface area concentration, α is only slightly dependent on particle sizes when compared to its dependence on ionic strength. Further, it was found that the specific surface coverage was similar for 0.095 μm, 0.53 μm and 1.0 μm particles during the transient stage of filtration at any ionic strength when the surface area concentrations of those suspension were equal.
Language eng
DOI 10.1007/BF02705738
Field of Research 090599 Civil Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2006, Springer New York
Persistent URL http://hdl.handle.net/10536/DRO/DU:30039672

Document type: Journal Article
Collection: School of Engineering
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