Improvement of methane production from waste paper by pretreatment with rumen fluid

Yasunori Baba, Chika Tada, Yasuhiro Fukuda, Yutaka Nakai

    Research output: Contribution to journalArticlepeer-review

    51 Citations (Scopus)

    Abstract

    Cellulose hydrolysis is the rate-limiting step in anaerobic digestion. In the present study, waste paper was used as a model of cellulosic biomass and was pretreated with rumen fluid prior to methane production. To achieve a high methane yield, the reaction time of the pretreatment was examined. Waste paper was soaked with rumen fluid for 6 and 24. h at 37°C. Various volatile fatty acids, especially acetate, were produced by the pretreatment. Semicontinuous methane production was carried out over a 20-day period. The best daily methane yield was obtained by the 6-h pretreatment. The amount was 2.6 times higher than that of untreated paper, which resulted in 73.4% of the theoretical methane yield. During methane production, the cellulose, hemicellulose and lignin degradabilities were improved by the pretreatment. Pretreatment by rumen fluid is therefore a powerful method to accelerate the methane yield from a cellulosic biomass.

    Original languageEnglish
    Pages (from-to)94-99
    Number of pages6
    JournalBioresource Technology
    Volume128
    DOIs
    Publication statusPublished - 2013 Jan

    Keywords

    • Anaerobic digestion
    • Cellulosic biomass
    • Methane production
    • Pretreatment
    • Rumen fluid

    ASJC Scopus subject areas

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

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