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Implications of short and long term critical flux experiments for laboratory-scale MBR operations

Navaratna, Dimuth and Jegatheesan, Veeriah 2011, Implications of short and long term critical flux experiments for laboratory-scale MBR operations, Bioresource technology, vol. 102, no. 9, pp. 5361-5369, doi: 10.1016/j.biortech.2010.12.080.

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Title Implications of short and long term critical flux experiments for laboratory-scale MBR operations
Author(s) Navaratna, Dimuth
Jegatheesan, Veeriah
Journal name Bioresource technology
Volume number 102
Issue number 9
Start page 5361
End page 5369
Total pages 9
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2011-05
ISSN 0960-8524
1873-2976
Keyword(s) Membrane Bioreactors (MBR)
critical flux
intermittent permeate suction
Trans-Membrane Pressure (TMP)
Extra-cellular polymeric substances (EPS)
Summary This paper evaluates the critical flux obtained by different techniques including tests with different flux step lengths (20 and 40 min and 7 days) and modes of operation (continuous and intermittent) under low and high MLSS concentrations. The paper also analyses a couple of long-term tests (flow rate of 40 and 20 L/day) to obtain the time required to reach the critical flux experimentally and compares those values with the results obtained numerically from a mathematical model. It was found that intermittent mode with membrane relaxation was useful in controlling the fouling of membrane and in restoring the membrane from fouling at lower MLSS.
Language eng
DOI 10.1016/j.biortech.2010.12.080
Field of Research 090404 Membrane and Separation Technologies
Socio Economic Objective 960912 Urban and Industrial Water Management
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2010, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30039675

Document type: Journal Article
Collection: School of Engineering
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Created: Thu, 27 Oct 2011, 08:59:07 EST

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