Autotrophic denitrification using hydrogen oxidizing bacteria in continuous flow biofilm reactor

Scott W. Benedict, Tariq Ahmed, Kauser Jahan

    Research output: Contribution to journalArticlepeer-review

    2 Scopus citations

    Abstract

    Autotrophic denitrification was investigated in five bench-scale upflow attached growth reactors using hydrogen oxidizing bacteria under anoxic conditions. The performance of sand, granular activated carbon (GAC), crushed pumice, crushed volcanic rock, and plastic media were evaluated as the support material. The reactors were inoculated with acclimated cultures obtained from domestic sewage treatment plant. A synthetic solution containing nitrate was used as the influent. The reactor performance was evaluated by measuring influent and effluent nitrate concentration. The design parameters demonstrated that the effectiveness of autotrophic denitrification is comparable to that of the heterotrophic process and may be utilized economically for drinking water treatment either as the main process or as a supplemental process for ion exchange regenerant treatment.

    Original languageEnglish (US)
    Pages (from-to)197-214
    Number of pages18
    JournalToxicological and Environmental Chemistry
    Volume67
    Issue number1-2
    DOIs
    StatePublished - 1998

    All Science Journal Classification (ASJC) codes

    • Environmental Chemistry
    • Pollution
    • Health, Toxicology and Mutagenesis

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