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

Citation

Nkemka, V.N., Gilroyed, B., Yanke, J., Gruninger, R., Vedres, D., McAllister, T., Hao, X. (2015). Bioaugmentation with an anaerobic fungus in a two-stage process for biohydrogen and biogas production using corn silage and cattail, 185 79-88. http://dx.doi.org/10.1016/j.biortech.2015.02.100

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 VS and 295.4±14.5mLg VS and hydrogen yields of 59.4±4.1mLg VS and 55.6±6.7mLg VS were obtained for unaugmented and bioaugmented corn silage, respectively. Similar CH yields of 101.0±4.8mLg VS and 104±19.1mLg VS and a low H yield (<1mLg VS) were obtained for unaugmented and bioaugmented cattail, respectively. However, bioaugmentation resulted in an initial increase in CH and H 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. -1 -1 -1 -1 -1 -1 -1 4 2 4 2

Publication date

2015-06-01