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Removal rates of bacterial cells from glass surfaces by fluid shear
Author(s) -
Powell Martin S.,
Slater Nigel K. H.
Publication year - 1982
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260241116
Subject(s) - capillary action , shear rate , shear stress , shearing (physics) , shear (geology) , shear flow , materials science , rheometer , settling , chemistry , chromatography , composite material , rheology , mechanics , thermodynamics , physics
A simple kinetic relationship is proposed to model the rate of removal of bacterial cells from solid surface by a shearing force. The theory is compared to experimentally obtained data for the removal of B. cereus cells from glass capillaries, the shear being imparted by a the flow of medium through the capillary. The critical shear stress required to sterilize the capillary wall is obtained experimentally for a number of industrial contaminant bacteria. The effect of settling time on critical shear stress is also investigated.