PROMOTION OF OXYGEN-TRANSFER IN 3-PHASE FLUIDIZED-BED BIOREACTORS BY FLOATING BUBBLE BREAKERS

Cited 30 time in webofscience Cited 0 time in scopus
  • Hit : 478
  • Download : 1
The objective of the present study was to investigate a method to enhance the volumetric rate of oxygen transfer in three-phase fluidized-bed bioreactors. The rates of oxygen transfer from air bubbles to viscous liquid media were promoted by floating bubble breakers in three-phase fluidized beds operated in the bubble coalescing regime. The liquid-phase volumetric oxygen transfer coefficient has been recovered by fitting the axial dispersion model to the resultant data, and its dependence on the experimental variables, such as the gas and liquid flow rates, particle size, concentration of bubble breakers, and liquid viscosity, has been examined. The results indicate that the liquid-phase volumetric oxygen transfer coefficient can be enhanced up to 20-25%. The coefficient exhibits a maximum with respect to the volume ratio of the floating bubble breakers to the fluidized solid particles; it increases with increases in the gas and liquid flow rates and size of fluidized particles, while it decreases with an increase in the liquid viscosity. An expression has been developed to correlate the liquid-phase volumetric oxygen transfer coefficient with the experimental variables.
Publisher
JOHN WILEY & SONS INC
Issue Date
1991
Language
English
Article Type
Article
Keywords

LIQUID MASS-TRANSFER; PHENOL DEGRADATION; TRANSFER COEFFICIENT; COLUMNS; PARTICLES; REACTOR; 2-PHASE

Citation

BIOTECHNOLOGY AND BIOENGINEERING, v.37, no.6, pp.580 - 586

ISSN
0006-3592
DOI
10.1002/bit.260370613
URI
http://hdl.handle.net/10203/4168
Appears in Collection
CBE-Journal Papers(저널논문)
Files in This Item
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 30 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0