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Mass transfer and mixing rates in fermentation vessels
Author(s) -
Blakebrough N.,
Sambamurthy K.
Publication year - 1966
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.260080104
Subject(s) - impeller , mass transfer , agitator , dimensionless quantity , aeration , mixing (physics) , mechanics , materials science , mass transfer coefficient , heat transfer , chemistry , analytical chemistry (journal) , chromatography , physics , organic chemistry , quantum mechanics
The effects on mass‐transfer and overall mixing rates of varying impeller geometry and operating speed have been studied for flat‐bladed turbines in laboratory fermentors, in aerated aqueous solutions, and in unaerated and aerated suspensions (1.6% w/v) of paper pulp. In the absence of suspended solid, oxygen absorption rates could be correlated directly with power input. In the pulp suspension, oxygen absorption at a given power input was influenced by impeller geometry and operating speed. The data for the three‐phase system can be correlated by a dimensionless equation relating oxygen‐transfer rates and mixing times to the geometrical and operating parameters of the impellers.