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Co-treatment of H2S and toluene in a biotrickling filter

Publication ,  Journal Article
Cox, HHJ; Deshusses, MA
Published in: Chemical Engineering Journal
May 28, 2002

Biological treatment is an emerging technology for the treatment of publicly owned treatment works (POTWs) off-gases. Most of POTWs off-gases contain H2S and a wide range of volatile organic compounds (VOCs). Since co-treatment of odors and VOCs in biotrickling filters is a relatively unexplored area, the simultaneous biotreatment of H2S and toluene (as the model VOC) was investigated. The experimental setup included two identical biotrickling filters, one operated at pH 4.5 and the other one was operated at pH 7.0. High concentrations of H2S (up to 170ppmv) and toluene (up to 2.2gm-3) were supplied to determine the influence of the pH on the maximum performance. A rapid startup (a few days) was observed for both toluene and H2S removal in the neutral-pH biotrickling filter. In the acidic biotrickling filter, toluene degradation also started immediately but at a lower rate. However, after several weeks of operation, the toluene elimination capacity (EC) at low pH reached a steady value identical to this found in the neutral-pH biotrickling filter. H2S did not affect toluene degradation at concentrations up to 170ppmv at either pH. At a volumetric load of 100m3m-3h-1, maximum elimination capacities of 70gtoluenem-3h-1 (at 1.7gm-3 toluene) and 20gH2Sm-3h-1 (at 170ppmv H2S, the highest concentration tested) were observed. Microbial counting and activity measurements indicated the development of different microbial populations in the reactors. In the neutral-pH biotrickling filter, a population developed which had a limited tolerance to low pH. The population in the acidic biotrickling filter showed a broader pH range for removal of H2S and toluene. Overall, the results presented indicated that effective co-treatment of H2S and VOCs can be obtained in a single-stage biotrickling filter. © 2002 Elsevier Science B.V. All rights reserved.

Duke Scholars

Published In

Chemical Engineering Journal

DOI

ISSN

1385-8947

Publication Date

May 28, 2002

Volume

87

Issue

1

Start / End Page

101 / 110

Related Subject Headings

  • Chemical Engineering
  • 4016 Materials engineering
  • 4011 Environmental engineering
  • 4004 Chemical engineering
  • 0907 Environmental Engineering
  • 0905 Civil Engineering
  • 0904 Chemical Engineering
 

Citation

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Cox, H. H. J., & Deshusses, M. A. (2002). Co-treatment of H2S and toluene in a biotrickling filter. Chemical Engineering Journal, 87(1), 101–110. https://doi.org/10.1016/S1385-8947(01)00222-4
Cox, H. H. J., and M. A. Deshusses. “Co-treatment of H2S and toluene in a biotrickling filter.” Chemical Engineering Journal 87, no. 1 (May 28, 2002): 101–10. https://doi.org/10.1016/S1385-8947(01)00222-4.
Cox HHJ, Deshusses MA. Co-treatment of H2S and toluene in a biotrickling filter. Chemical Engineering Journal. 2002 May 28;87(1):101–10.
Cox, H. H. J., and M. A. Deshusses. “Co-treatment of H2S and toluene in a biotrickling filter.” Chemical Engineering Journal, vol. 87, no. 1, May 2002, pp. 101–10. Scopus, doi:10.1016/S1385-8947(01)00222-4.
Cox HHJ, Deshusses MA. Co-treatment of H2S and toluene in a biotrickling filter. Chemical Engineering Journal. 2002 May 28;87(1):101–110.
Journal cover image

Published In

Chemical Engineering Journal

DOI

ISSN

1385-8947

Publication Date

May 28, 2002

Volume

87

Issue

1

Start / End Page

101 / 110

Related Subject Headings

  • Chemical Engineering
  • 4016 Materials engineering
  • 4011 Environmental engineering
  • 4004 Chemical engineering
  • 0907 Environmental Engineering
  • 0905 Civil Engineering
  • 0904 Chemical Engineering