Bioaugmentation of a Two-Stage Thermophilic (68°C/55°C) Anaerobic Digestion Concept for Improvement of the Methane Yield From Cattle Manure

Henrik Bangsø Nielsen, Zuzana Mladenovska, Birgitte Kiær Ahring

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The possibility of improving a two-stage (68°C/55°C) anaerobic digestion concept for treatment of cattle manure was studied. In batch experiments, a 10-24% increase of the specific methane yield from cattle manure and its fractions was obtained, when the substrates were inoculated with bacteria of the genus Caldicellusiruptor and Dictyoglomus. In a reactor experiment inoculation of a 68°C pretreatment reactor with Caldicellusiruptor resulted in a 93% increase in the methane yield of the pre-treatment reactor for a period of 18 days, but gave only a slight increase in the overall methane yield of the two-stage setup.
    Original languageEnglish
    JournalBiotechnology and Bioengineering (Print)
    Volume97
    Issue number6
    Pages (from-to)1638-1643
    ISSN0006-3592
    DOIs
    Publication statusPublished - 2007

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