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Effect of empty bed residence time on biotrickling filter performance: case study—triethylamine

  • M. Mirmohammadi
  • R. Bayat
  • H. Keshavarzi Shirazi
  • S. Sotoudeheian
Original Paper

Abstract

In this study, a laboratory-scale biotrickling filter (BTF) is used to remove Triethylamine (TEA) from gaseous wastes. The BTF is made of stainless steel with a height of 210 cm and an internal diameter of 21 cm packed with lava rocks. TEA elimination pattern was evaluated by changing empty bed residence times (EBRTs). The maximum elimination capacity (EC) has been determined to be 87 g/m3/h. At all EBRTs 52, 31, 20, and 10 s, contaminant transferring from gas phase to liquid was more than the EC. Also, the removal efficiency was 100 % for a mass loading of 100 g/m3/h. While the liquid recirculation velocity of 3.466 m3/m2/h was maintained, the flow rate was adjusted to 60, 100, 156, and 312 L/min. The results show that due to the high solubility of TEA in water for all the EBRTs, TEA can be solved in the circulated liquid and then be degraded gradually by microorganisms. Therefore, the least EBRT of 10 s is more appropriate.

Keywords

Air pollution Biotrickling filter Empty bed residence time (EBRT) Triethylamine 

Notes

Acknowledgments

The authors are most grateful to the laboratory staff of the Dept. of Environmental Engineering, Faculty of Environment, Tehran University, for their collaboration in this research.

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Copyright information

© Islamic Azad University (IAU) 2013

Authors and Affiliations

  • M. Mirmohammadi
    • 1
  • R. Bayat
    • 2
    • 3
  • H. Keshavarzi Shirazi
    • 1
  • S. Sotoudeheian
    • 2
  1. 1.Department of Environmental Engineering, Faculty of EnvironmentUniversity of TehranTehranIran
  2. 2.Department of Civil EngineeringSharif University of TechnologyTehranIran
  3. 3.TehranIran

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