Bioaugmentation with an anaerobic fungus in a two-stage process for biohydrogen and biogas production using corn silage and cattail

Bioresource Technology
Valentine Nkongndem NkemkaXiying Hao

Abstract

Bioaugmentation with an anaerobic fungus, Piromyces rhizinflata YM600, was evaluated in an anaerobic two-stage system digesting corn silage and cattail. Comparable methane yields of 328.8±16.8mLg(-1)VS and 295.4±14.5mLg(-1)VS and hydrogen yields of 59.4±4.1mLg(-1)VS and 55.6±6.7mLg(-1)VS were obtained for unaugmented and bioaugmented corn silage, respectively. Similar CH4 yields of 101.0±4.8mLg(-1)VS and 104±19.1mLg(-1)VS and a low H2 yield (<1mLg(-1)VS) were obtained for unaugmented and bioaugmented cattail, respectively. However, bioaugmentation resulted in an initial increase in CH4 and H2 production rates and also increased volatile fatty acid degradation rate for both substrates. Our study demonstrates the potential of bioaugmentation with anaerobic fungus for improving the digestibility of lignocellulose substrates for biogas and biohydrogen production.

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Citations

Jun 4, 2015·Waste Management·Valentine Nkongndem NkemkaXiying Hao
Oct 29, 2015·Environmental Science and Pollution Research International·Shantonu Roy, Debabrata Das
Mar 19, 2019·Annual Review of Chemical and Biomolecular Engineering·Igor A PodolskyMichelle A O'Malley
Dec 5, 2019·Applied Microbiology and Biotechnology·Emine Gozde OzbayramMarcell Nikolausz
Oct 14, 2020·Journal of Environmental Management·Mireille MartensStefan E B Weisner
Jun 24, 2020·Bioresource Technology·K DauptainH Carrere

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