期刊
BIORESOURCE TECHNOLOGY
卷 102, 期 24, 页码 11177-11182出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.09.077
关键词
Anaerobic digestion; Biogas; Biological pretreatment; Complex microbial agents; Chemical composition
资金
- National Science and Technology Major Project [2011ZX05009-004]
- Nation Basic Research Program of China (973 Program) [2011CB200 906]
A biological pretreatment with new complex microbial agents was used to pretreat corn straw at ambient temperature (about 20 degrees C) to improve its biodegradability and anaerobic biogas production. A complex microbial agent dose of 0.01% (w/w) and pretreatment time of 15 days were appropriate for biological pretreatment. These treatment conditions resulted in 33.07% more total biogas yield, 75.57% more methane yield, and 34.6% shorter technical digestion time compared with the untreated sample. Analyses of chemical compositions showed 5.81-25.10% reductions in total lignin, cellulose, and hemicellulose contents, and 27.19-80.71% increases in hot-water extractives; these changes contributed to the enhancement of biogas production. Biological pretreatment could be an effective method for improving biodegradability and enhancing the highly efficient biological conversion of corn straw into bioenergy. (C) 2011 Elsevier Ltd. All rights reserved.
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