Enhancing methane production during the anaerobic digestion of crude glycerol using Japanese cedar charcoal

Ryoya Watanabe, Chika Tada, Yasunori Baba, Yasuhiro Fukuda, Yutaka Nakai

    Research output: Contribution to journalArticlepeer-review

    39 Citations (Scopus)

    Abstract

    The use of Japanese cedar charcoal as a support material for microbial attachment could enhance methane production during anaerobic digestion of crude glycerol and wastewater sludge. Methane yield from a charcoal-containing reactor was approximately 1.6 times higher than that from a reactor without charcoal, and methane production was stable over 50days when the loading rate was 2.17g chemical oxygen demand (COD) L-1d-1. Examination of microbial communities on the charcoal revealed the presence of Uncultured Desulfovibrio sp. clone V29 and Pelobacter seleniigenes, known as 1,3-propandiol degraders. Hydrogenotrophic methanogens were also detected in the archaeal community on the charcoal. Methanosaeta, Methanoregula, and Methanocellus were present in the charcoal-containing reactor. The concentration of propionate in the charcoal-containing reactor was also lower than that in the control reactor. These results suggest that propionate degradation was enhanced by the consumption of hydrogen by hydrogenotrophic methanogens on the charcoal.

    Original languageEnglish
    Pages (from-to)387-392
    Number of pages6
    JournalBioresource Technology
    Volume150
    DOIs
    Publication statusPublished - 2013 Dec

    Keywords

    • Anaerobic digestion
    • Charcoal
    • Glycerol
    • Methane
    • Microbial community

    ASJC Scopus subject areas

    • Bioengineering
    • Environmental Engineering
    • Renewable Energy, Sustainability and the Environment
    • Waste Management and Disposal

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