期刊
BIORESOURCE TECHNOLOGY
卷 99, 期 17, 页码 8512-8515出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2008.03.028
关键词
wheat straw; biodegradation; steam explosion; Trametes versicolor
资金
- National Science Foundation of China [30471374]
- Chinese Advanced University [20060019041, 20050019029]
- Chinese Ministry of Education [105014]
The effect of steam explosion pretreatment on biodegradation of lignin in wheat straw was studied in this paper. Through experiments and analysis, 0.8 MPa operation pressure and 1:20 wheat straw to water ratio are optimum for destroying lignin and the maximum of lignin loss rate is 19.94%. After steam explosion pretreatment, the wheat straw was retted by Trametes versicolor for 40 days. Biodegradation rate of lignin was tested and the maximum of 55.40% lignin loss rate Was found on day 30. During the whole process of both steam explosion pretreatment and biodegradation, 75.34% lignin was degraded, without steam explosion the biodegradation of raw material the degradation rate of lignin was 31.23% only. FT-IR spectroscopy, TGA and SEM were used for further validating the results of biodegradation. (c) 2008 Elsevier Ltd. All rights reserved.
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