Effects of microorganisms from cow and buffalo rumen on biogas production from Napier grass and rice straw Online publication date: Mon, 05-Jul-2021
by Suriya Sawanon; Piyanee Sangsri; Nusara Sinbuathong
International Journal of Global Warming (IJGW), Vol. 24, No. 2, 2021
Abstract: Biogas is a fuel that is affordable and provides resilience to climate change. In this study, microorganisms from cow and buffalo rumen were identified that were appropriate for digestion of Napier grass and rice straw alone and in co-digestion using cow manure to produce biogas. The feedstock concentration was 20% by fresh weight. The methane (CH4) yield was the key performance indicator for biogas production. The microorganism source had different effects on the biogas production from the digestion of Napier grass and rice straw and the co-digestion of these feedstocks with cow manure. The microorganisms from cow rumen were appropriate for the digestion of Napier grass, while those from buffalo rumen were appropriate for the digestion of rice straw. However, cow rumen microorganisms were appropriate for mixed feedstock co-digestion using 10% of either Napier grass or rice straw and 10% cow manure in 80% water.
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