Enhancement of volatile fatty acids production from rice straw via anaerobic digestion with chemical pretreatment

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Rice straw is one of the most abundant renewable biomass sources and was selected as the feedstock for the production of volatile fatty acids (VFAs) from which microbial biodiesel can be produced. Two kinds of chemical pretreatments involving nitric acid and sodium hydroxide were investigated at 150 A degrees C with 20 min of reaction time. The nitric acid pretreatment generated the most hemicellulose hydrolyzate, while significant reduction of the lignin occurred with sodium hydroxide pretreatment. Anaerobic digestion of 20 g/L rice straw yielded 6.00 and 7.09 g VFAs/L with 0.5 % HNO3 and 2 % NaOH, respectively. The VFAs yield with 2 % NaOH was 0.35 g/g.
Publisher
SPRINGER
Issue Date
2015-08
Language
English
Article Type
Article
Citation

BIOPROCESS AND BIOSYSTEMS ENGINEERING, v.38, no.8, pp.1623 - 1627

ISSN
1615-7591
DOI
10.1007/s00449-015-1387-6
URI
http://hdl.handle.net/10203/204059
Appears in Collection
CE-Journal Papers(저널논문)CBE-Journal Papers(저널논문)
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