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Applied Biochemistry and Biotechnology

, Volume 14, Issue 3, pp 207–219 | Cite as

Simple measuring techniques for the determination of bubble- and bulk-phase velocities in bioreactors

  • A. Lübbert
  • T. Korte
  • B. Larson
Original Articles

Abstract

Ultrasound Doppler pulse velocimetry for the measurement of bubble velocities and local temperature pulse time-of-flow techniques for determining the flow velocities of the liquid phase are two complementary new measuring techniques to gain information on the fluid dynamic behavior of bioreactors. Both methods show considerable advantages over conventional techniques. They proved to provide reliable results during biotechnological cultivations. Results from runs in airlift loop bioreactors are reported.

Index Entries

Bulk-phase velocities, measurement of in bioreactors bubble-phase velocities, measurement of in bioreactors bioreactors ultrasound Doppler pulse velocimetry flow velocities fluid dynamic behavior airlift loop bioreactors 

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References

  1. 1.
    Lübbert, A., Diekmann, J.,and, Rotzoll, G., (1982), inResidence Time Distribution Theory in Chemical Engineering, Pethö, A., and Noble, R. D., eds., Verlag Chemie, Weinheim, FRG, pp. 223–227.Google Scholar
  2. 2.
    Larson, B., (1985),Time-of-Flow Measurements in Bubbly Flows by Means of Pseudorandom Temperature-Pulse-Sequences” (Laufzeitmessungen in Blasenströmungen mit Pseudostochastischen Temperaturimpulsfolgen); Diplom Thesis, University of Hannover (in German).Google Scholar
  3. 3.
    Lübbert, A., Korte, T., and Schügerl, K., (1983), inMeasuring Techniques in Gas-Liquid Two-Phase Flows, IUTAM Symposium Nancy, France, Delhaye, J. M., and Cognet, G., eds., Springer, Berlin, pp. 479–494.Google Scholar
  4. 4.
    Krautkrämer, J., and Krautkrämer, H., (1975),Material Testing With Ultrasound (Werkstoffprüfung mit Ultraschall), Springer Verlag, Berlin (in German).Google Scholar
  5. 5.
    Korte, T. and Lübbert, A., (1984), inParallel Computing 83, Int. Conf. on Parallel Computing, Berlin, 1983, Feilmeier, M., Joubert, J., and Schendel, U., eds., Elsevier, Amsterdam, pp. 341–344.Google Scholar
  6. 6.
    Korte, T., and Lübbert, A., (1985),Comp. Chem. Eng. 9, 19.CrossRefGoogle Scholar
  7. 7.
    Bendat, J. S., and Piersol, A. G., (1971),Random Data—Analysis and Measurement Procedures, Wiley-Interscience, New York, NY.Google Scholar
  8. 8.
    Korte, T. (1986)Measuring Techniques for the Investigation on the Hydrodynamics of Multiphase Flows in chemical reactors ( „Messtechnische Möglichkeiten bei der Untersuchung der Hydrodynamik in den Mehrphasenstroemungen chemischer Reaktoren), ongoing dissertation, Universität Hannover (in German).Google Scholar
  9. 9.
    Stravs, A. A., and von Stockar, U., (1985),Chem. Eng. Sci. 40, 1167.Google Scholar

Copyright information

© The Humana Press Inc 1987

Authors and Affiliations

  • A. Lübbert
    • 1
  • T. Korte
    • 1
  • B. Larson
    • 1
  1. 1.Institut für Technische ChemieUniversität HannoverHannoverGermany

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