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Bioprocess and Biosystems Engineering

, Volume 26, Issue 1, pp 69–74 | Cite as

Biological waste gas treatment with a modified rotating biological contactor. Ι. Control of biofilm growth and long-term performance

  • I. Vinage
  • P. Rudolf von RohrEmail author
Original Paper

Abstract

In this work, we introduce a modified rotating biological contactor (RBC) system and demonstrate its feasibility by applying the newly devised process to the biological treatment of artificial waste gas. In the proposed system, the waste gas is introduced to the bioreactor in the spacings between the rotating discs through a hollow shaft, thus allowing for intimate gas–liquid contact. A 91-l modified RBC containing 20 biofilm support discs 40 cm in diameter was used in the experiments. Toluene was used as the model pollutant, and the system was operated under standard operating conditions for more than one year in order to investigate its long-term performance and assess its ability to control the growth of the biofilm. It was demonstrated that the proposed system allows to efficiently control the growth of the biofilm, thus overcoming the clogging problem inherent in most conventional methods for the biological treatment of waste gas. Moreover, the system was shown to exhibit stationary long-term performance for a period of more than one year, hence indicating its feasibility for industrial application.

Keywords

Rotating biological contactor Biofilm Shear stress Toluene 

References

  1. 1.
    Sabo F, Fisher K (1996) Entwicklung und Erprobung eines neuartigen Rotor-Biofilters. VDI Berichte 1241:559–565Google Scholar
  2. 2.
    Weber FJ, Hartmans S (1996) Prevention of clogging in a biological trickle-bed reactor removing toluene from contaminated air. Biotechnol Bioeng 50:91–97Google Scholar
  3. 3.
    Rüdiger P (1999) Abluftreinigung in Biofilmreaktoren mit inerten Trägern, Diss. ETH No. 13229, ZurichGoogle Scholar
  4. 4.
    Schonduve P, Sara M, Friedl A (1996) Influence of physiologically relevant parameters on biomass formation in a trickle-bed bioreactor used for waste gas cleaning. Appl Microbiol Biotechnol 45:286–292CrossRefGoogle Scholar
  5. 5.
    Cox HHJ, Deshusses MA (1999) Biomass control in waste air biotrickling filters by protozoan predation. Biotechnol Bioeng 62:216–224PubMedGoogle Scholar
  6. 6.
    Sorial GA, Smith FL, Suidan MT, Biswas P, Brenner RC (1995) Evaluation of trickle-bed biofilter media for toluene removal. J Air Waste Manage Assoc 45:801–810Google Scholar
  7. 7.
    Laurenzis A, Heits H, Wubker SM, Heinze U, Friedrich C, Werner U (1998) Continuous biological waste gas treatment in stirred trickle-bed reactor with discontinuous removal of biomass. Biotechnol Bioeng 57:497–503Google Scholar
  8. 8.
    Cox HHJ, Deshusses MA (1999) Chemical removal of biomass from waste air biotrickling filters: screening of chemicals of potential interest. Water Res 33:2383–2391Google Scholar
  9. 9.
    Gai S, Kruger K, Kanne L, Mohr KH (2001) The rotary trickle-bed reactor—A new reactor concept for biological gas purification. Chem Eng Technol 24:5-14Google Scholar
  10. 10.
    Antonie RL (1976) Fixed biological surfaces—waste water treatment, the rotating biological contactor. CRC Press, Cleveland, OHGoogle Scholar
  11. 11.
    Vis PIM, Rinzema A (1991) Removal of ammonia from waste-gas with a rotating biological contactor. Paper presented at the International Symposium on Environmental Biotechnology, Ostend, BelgiumGoogle Scholar
  12. 12.
    Rudolf von Rohr P, Rüdiger P (2001) Rotating biological contactors. In: Kennes C, Veiga MC (eds) Bioreactors for waste gas treatment. Kluwer Academic, Dordrecht, pp 201–214Google Scholar
  13. 13.
    Okkerse WJH, Ottengraf SPP, Osinga-Kuipers B (2000) Biofilm thickness variability investigated with a laser triangulation sensor. Biotechnol Bioeng 70:619–629CrossRefPubMedGoogle Scholar
  14. 14.
    Characklis WG, Marshall KC (1990) Biofilms. John Wiley, New YorkGoogle Scholar

Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  1. 1.Institute of Process EngineeringETH ZurichZurichSwitzerland

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