期刊
BIORESOURCE TECHNOLOGY
卷 128, 期 -, 页码 94-99出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.09.077
关键词
Rumen fluid; Pretreatment; Cellulosic biomass; Methane production; Anaerobic digestion
资金
- Japan Society for the Promotion of Science (JSPS)
- Miyagi Prefectural Government Recycling Promotion Division
- Miyagi Organization for Industry Promotion
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 degrees 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. (C) 2012 Elsevier Ltd. All rights reserved.
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