Summary
The photographic and electrical conductivity methods to measure the structure of two phase flow, especially bubble size, bubble frequency, local gas hold-up and, for the latter, the bubble velocity are described.
Similar content being viewed by others
Abbreviations
- \(a = \frac{{a'}}{{V_L }}\) :
-
specific interfacial area
- a′:
-
gas/liquid interfacial area
- B:
-
constant in Eq. (4)
- d:
-
diameter of the bubbles
- d:
-
mean diameter of the bubbles
- dS :
-
Sauter diameter
- EG :
-
relative gas hold up
- I:
-
current
- kL :
-
mass transfer coefficient across the gas/liquid interface
- kL′ :
-
local kL
- \(k_L * = \frac{{k_L a}}{{a/2}}\) :
-
LT−1
- \(k_L = \frac{{k_L a}}{a}\) :
-
LT−1
- Δ1:
-
longitudinal distance between the start and stop sensors
- Δ1B :
-
pierced length of the bubble
- t:
-
time
- Δt1 :
-
length of the square-wave signal at the start sensor
- Δt2 :
-
length of the square-wave signal at the stop sensor
- Δt12 :
-
time delay between start and stop signals
- V:
-
volume of the bubbling layer
- VL :
-
volume of the bubble free layer
- VB :
-
bubble volume
- vB :
-
bubble velocity
References
Akagawa, K. (1963). Trans Jap. Soc. Mech. Engrs. 29, 924
Ashley, M.J., Haselden, G.G. (1972). Trans. Inst. Chem. Engrs. 50, 119
Buchholz, R. (1978). Bestimmung von Blasengrößenverteilungen und der Zelldichte in Blasensäulenfermenter (Diplomarbeit) TU Hannover
Buchholz, R. (1978). Undersuchung der Struktur der Zweiphasenströmung in Blasensäulen-Bioreaktoren (Dissertation) TU Hannover
Buchholz, R., Adler, I., Schügerl, K. (1979). European J. Appl. Microbiol. Biotechnol. (in press)
Burgess, J.M., Calderbank, P.H. (1975). Chem. Eng. Sci. 30, 743
Calderbank, P.H., Rennie, J. (1962). Trans. Instn. Chem. Engrs. 40, 3
Iida, Y. (1972). Atomic Energy Soc. Japan 14, 337
Kalischweski, K., Schügerl, K. (1977). Chem. Ing. Techn. 49, 569
Nagel, O., Kürten, K., Sinn, R. (1972). Chem. Ing. Techn. 44, 367, 899
Porter, K.E., Davies, B.T., Wong, P.F.Y. (1967). Trans. Inst. Chem. Engrs. 45, T265
Schügerl, K., Lücke, J., Oels, U. (1977). Bubble column bioreactors. In: Advances in biochemical engineering. T.K. Ghose, A. Fiechter, N. Blakeborogh, eds., vol. 7 p. 1 Berlin, Heidelberg, New York: Springer
Serizawa, A. (1974). Dissertation, Kyoto University
Serizawa, A., Kataoka, I., Michiyoshi, I. (1975) Int. J. Multiphase Flow 2, 221
Zakrzewski, W., Bucholz, R. (1978). ‘Characterization of bubble columns by on-line measurements’ in ‘Modeling of Chemical reactors’, pp. 105–119, RT1;TCI, Technical University Hannover
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Buchholz, R., Schügerl, K. Bubble column bioreactors. European J. Appl. Microbiol. Biotechnol. 6, 301–313 (1979). https://doi.org/10.1007/BF00499160
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00499160