Cross-flow microfiltration of kaolinite-in-water dispersions

The convective model of cross-flow microfiltration of suspensions with non-Newtonian viscosity (see E.F. Leonard and C.S. Vassilieff, Chem. Eng. Commun., 30 (1984) 209) predicts different qualitative behaviour depending on the mode of operation (i.e. constant inlet feed or constant inlet pressure)....

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Bibliographic Details
Published in:Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 1994-11, Vol.92 (3), p.231-247
Main Authors: Vassilieff, C.S., Momtchilova, I.G., Krustev, R.A.
Format: Article
Language:English
Subjects:
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Kaolinite-in-water dispersions
Microfiltration
Physical and chemical studies. Granulometry. Electrokinetic phenomena
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Summary:The convective model of cross-flow microfiltration of suspensions with non-Newtonian viscosity (see E.F. Leonard and C.S. Vassilieff, Chem. Eng. Commun., 30 (1984) 209) predicts different qualitative behaviour depending on the mode of operation (i.e. constant inlet feed or constant inlet pressure). Experiments aimed at testing this prediction are performed with stable kaolinite-in-water dispersions (pH 10) in a small laboratory microfiltration set-up. The observed filtration behaviour follows the pattern predicted by the convective model. The shear-enhanced diffusion model fails to rationalize the experimental observations.
ISSN:0927-7757
1873-4359
DOI:10.1016/0927-7757(94)02953-9