P-62 ウシルーメン液を用いたリグノセルロース系バイオマス前処理の連続試験におけるpH低下が微生物群集構造に与える影響(BDF・メタン発酵,Poster Session)

概要

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Lignocellulosic biomass are potential raw materials for producing several high-value products. The hydrolysis of plant cell wall to monosaccharide and several monomers were considered the important step in lignocellulosic biomass decomposition. Then we tried to develop the effective decomposition method, which used rumen fluid when decomposition of plant cell wall prior to methane production. This method could increase volatile fatty acids production, and methane production from lignocellulosic biomass by effective decomposition. However, this study was examined only the batch experiment. Therefore, we investigated changing of the chemical properties and microbial community structure during continuous pretreatment of lignocellulosic biomass using rumen fluid. During the incubation period, pH was decreased below 6.0 after 3 days. Volatile fatty acids and biogas production was also significantly decreased after 3 days incubation. Microbial communities analyzed by PCR-DGGE method showed that bacterial communities were not changed during the incubation period. These results suggested that hydrolysis and methanogenic processes in rumen pretreatment system were limited by low pH, meanwhile bacterial communities were not changed during the incubation period.
一般社団法人日本エネルギー学会の論文
2014-01-08