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Enhancement of Tubular Cross-Flow Microfiltration of Dispersions by Gas-Liquid Two-Phase Flow
Pospíšil, P., Mikulášek, P., Doleček, P. and Cakl, J. Enhancement of Tubular Cross-Flow Microfiltration of Dispersions by Gas-Liquid Two-Phase Flow Chemical papers, Vol.56, No. 1, 2002, 7-13
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Attached Files |
| Name |
Description |
MIMEType |
Size |
Downloads |
n561a7.pdf
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561a7.pdf |
application/pdf |
367.73KB |
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| Author(s) |
Pospíšil, P.
Mikulášek, P.
Doleček, P.
Cakl, J.
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| Title |
Enhancement of Tubular Cross-Flow Microfiltration of Dispersions by Gas-Liquid Two-Phase Flow
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| Journal name |
Chemical papers
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| Publication date |
2002
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| Year available |
2002
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| Volume number |
56
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| Issue number |
1
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| ISSN |
0366-6352
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| Start page |
7
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| End page |
13
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2002
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| Language |
english
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| Subject |
290000 Engineering and Technology
290600 Chemical Engineering
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| Abstract/Summary |
An application of the gas-liquid two-phase flow for the flux enhancement during the microfiltration of aqueous titanium dioxide dispersions on aluminium oxide tubular membrane has been studied. This study focused on the influence of the liquid and gas flow velocities and feed concentration on the flux and on the development of a mathematical model for the flux prediction. The results of experiments showed a positive effect of the constant gas-liquid two-phase flow on the flux. It might be concluded from the analysis of experimental results based on dead-end filtration model that two-phase flow seemed to expand the particle cake as it increased both the cake porosity and thickness, thus allowing higher fluxes. For the periodical gas flow, the flux enhancement was not so significant and strongly depended on the periodical gas flow mode as well as on the concentration of dispersion used. On the other hand, an air injection influenced the permeate flux for any concentration studied. A mathematical model for the flux prediction during the two-phase gas-liquid microfiltration has been developed. The results showed a good agreement between experimental data and model prediction.
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