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Effect of number of turbine impellers on surface aeration in laboratory fermentor
Author(s) -
Veljković Vlada,
Skala Dejan
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.260340209
Subject(s) - aeration , impeller , turbine , power consumption , intensity (physics) , environmental science , materials science , power (physics) , pulp and paper industry , mechanics , environmental engineering , mechanical engineering , waste management , engineering , physics , thermodynamics , optics
The effect of one and two four‐flat‐bladed turbine impellers on the surface aeration intensity in a laboratory tormentor was investigated at different agitation speeds and sparge rates. The surface aeration was found to be generally more intensive with two impellers for the same other operating conditions because of higher power consumption and the position of the upper impeller closer to the free liquid surface. The surface aeration intensity was successfully correlated in terms of power consumption and sparge rate. The aeration number alone cannot be used for general predicting surface aeration intensities.