In this study, three definitions for critical flux were introduced based on the crossflow microfiltration (CFMF) experiments conducted under an operational mode of constant permeate flux. The critical flux based on material balance was calculated from the rate of particles deposition. The highest permeate flux results in no particle deposition being taken at the critical flux. The second definition was based on the increase in transmembrane pressure (TMP). The critical flux based on the TMP increase is the flux below which the membrane fouling does not occur. The third definition was based on the direct observation of particles deposition through microscope. Detailed experiments were conducted with synthetic suspension of different sizes of latex particles. Long term experiments conducted with polydispersed kaolin clay suspension indicated that the critical flux based on material balance concept is more realistic in field conditions.
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Research Article|
May 01 2000
Improvement of microfiltration performance in water treatment: is critical flux a viable solution?
S. Vigneswaran;
S. Vigneswaran
1Environmental Engineering Group, Faculty of Engineering, City Campus, Building 2, Level 6,University of Technology, Sydney, P. O. Box 123, Broadway, NSW 2007, Australia
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D.Y. Kwon;
D.Y. Kwon
1Environmental Engineering Group, Faculty of Engineering, City Campus, Building 2, Level 6,University of Technology, Sydney, P. O. Box 123, Broadway, NSW 2007, Australia
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H.H. Ngo;
H.H. Ngo
1Environmental Engineering Group, Faculty of Engineering, City Campus, Building 2, Level 6,University of Technology, Sydney, P. O. Box 123, Broadway, NSW 2007, Australia
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J.Y. Hu
J.Y. Hu
1Environmental Engineering Group, Faculty of Engineering, City Campus, Building 2, Level 6,University of Technology, Sydney, P. O. Box 123, Broadway, NSW 2007, Australia
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Water Sci Technol (2000) 41 (10-11): 309–315.
Citation
S. Vigneswaran, D.Y. Kwon, H.H. Ngo, J.Y. Hu; Improvement of microfiltration performance in water treatment: is critical flux a viable solution?. Water Sci Technol 1 May 2000; 41 (10-11): 309–315. doi: https://doi.org/10.2166/wst.2000.0669
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S. Vigneswaran, D.Y. Kwon, H.H. Ngo, J.Y. Hu; Improvement of microfiltration performance in water treatment: is critical flux a viable solution?. Water Sci Technol 1 May 2000; 41 (10-11): 309–315. doi: https://doi.org/10.2166/wst.2000.0669
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