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Biological oxidation of hydrogen in soils flushed with a mixture of H2, CO2, O2 and N2

Dugnani, Lucia ; Wyrsch, Isabelle ; Gandolla, Mauro ; Aragno, Michel

In: FEMS Microbiology Ecology, 1986, vol. 2, no. 6, p. 347-351

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    Title
    • Biological oxidation of hydrogen in soils flushed with a mixture of H2, CO2, O2 and N2
    Author
    • Dugnani, Lucia. Consorzio per l'Eliminazione dei Rifiuti del Luganese, Bioggio, Canton Tessin, Switzerland
    • Wyrsch, Isabelle. Laboratoire de Microbiologie, Institut de Botanique, Université de Neuchâtel, Chantemerle 22, 2000 Neuchâtel 7, Switzerland
    • Gandolla, Mauro. Consorzio per l'Eliminazione dei Rifiuti del Luganese, Bioggio, Canton Tessin, Switzerland
    • Aragno, Michel. Laboratoire de Microbiologie, Institut de Botanique, Université de Neuchâtel, Chantemerle 22, 2000 Neuchâtel 7, Switzerland
    Document Type
    • Postprint
    OAI-PMH Identifier
    • oai:doc.rero.ch:300535
    Summary
    A stainless steel cylinder filled with soil was flushed upstream with a H2/CO2/air mixture. The consequence was a strong enrichment of the aerobic, autotrophic hydrogen-oxidising microflora, which reached densities enabling them to oxidize 84.5 ml H2· dm−2· h−1 in the first 25-cm layer. H2 concentration profiles, hydrogen uptake activity and cell numbers correlated well with each other. Most of the organisms isolated were dinitrogen fixers. Thus, soils containing hydrogen-oxidising bacteria may act as a biological shield between H2-rich environments and air, and may be utilized as biofilters, e.g., in the waste-processing industry