Sulfide oxidation in a biofilter

Claus Lunde Pedersen, Liu Dezhao, Michael Jørgen Hansen, Anders Feilberg, Louise Helene Søgaard Jensen, Lise Bonne Guldberg, Andreas Schramm, Lars Peter Nielsen

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    Abstract

    Observed hydrogen sulfide uptake rates in a biofilter treating waste air from a pig farm were too high to be explained within conventional limits of sulfide solubility, diffusion in a biofilm and bacterial metabolism. Clone libraries of 16S and 18S rRNA genes from the biofilter found no sulfide oxidizing bacteria but several fungal families including Trichocomaceae. A positive correlation was found between the presence of mold and sulfide uptake. However there have been no reports on fungi metabolizing hydrogen sulfide. We hypothesize that the mold increases the air exposed surface, enabling higher hydrogen sulfide uptake followed by oxidation catalyzed by iron-containing enzymes such as cytochrome c oxidase in a process uncoupled from energy conservation.
    Original languageEnglish
    Publication date2012
    Number of pages1
    Publication statusPublished - 2012
    Event14th International Symposium on Microbial Ecology: The Power of the Small - Bella Center, Copenhagen, Denmark
    Duration: 19 Aug 201224 Aug 2012
    Conference number: 14
    http://www.isme-microbes.org/isme14

    Conference

    Conference14th International Symposium on Microbial Ecology
    Number14
    LocationBella Center
    CountryDenmark
    CityCopenhagen
    Period19/08/201224/08/2012
    Internet address

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