ISSN:
0006-3592
Keywords:
membrane filtration
;
cross-flow filtration
;
air slugs
;
diafiltration
;
bacterial suspensions
;
Chemistry
;
Biochemistry and Biotechnology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Biology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
A novel cross-flow technique for membrane filtration of bacterial cell suspensions was established. This is an air slugs entrapped cross-flow method in which air slugs were generated by introducing air into the cross-flow stream. As air slugs moved along with cross-flow, the disturbance of cell sublayer formation on membrane surface was enhanced. As a consequence, filtration flux was improved and stabilized. The effect of air slugs on improving filtration flux was more pronounced in filtering gram-negative Escherichia coli cell than grampositive Brevibacterium flavum cell. Moreover, air slug was about 50% more effective on reducing filtration resistance using ultrafiltration (UF) membrane of 300,000 molecular weight cutoff (MWCO) than microfiltration (MF) membrane of 0.2 μm. ©1993 John Wiley & Sons, Inc.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/bit.260410504
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