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Bacterial deposition on and detachment from surfaces in turbulent flow
Author(s) -
Hermanowicz S. W.,
Danielson R. E.,
Cooper R. C.
Publication year - 1989
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.260330204
Subject(s) - turbulence , reynolds number , deposition (geology) , flow (mathematics) , randomness , chemistry , layer (electronics) , mechanics , biophysics , materials science , biology , geology , physics , nanotechnology , mathematics , geomorphology , statistics , sediment
Abstract A number of experimental studies on deposition and detachment of bacterial cells of Pseudomonas sp. was performed in an inclined plate apparatus 2.3 m long. In each run, ca. 10 8 cells were introduced into a layer of flowing water at Reynolds numbers of ca. 1000 and 1300. After a preset time, the flow was stopped and the position of attached cells measured. Spatial pattern of attached cells was initially aggregative and remained so for lower flow rates. For higher flow rates the pattern tended towards randomness, perhaps as a result of cell detachment. Overall sticking efficiency of cells was very small (ca. 10 −5 ).