Simultaneous saccharification and fermentation of lignocellulosic residues pretreated with phosphoric acid-acetone for bioethanol production

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Bermudagrass, reed and rapeseed were pretreated with phosphoric acid-acetone and used for ethanol production by means of simultaneous saccharification and fermentation (SSF) with a batch and fed-batch mode. When the batch SSF experiments were conducted in a 3% low effective cellulose, about 16 g/L of ethanol were obtained after 96 h of fermentation. When batch SSF experiments were conducted with a higher cellulose content (10% effective cellulose for reed and bermudagrass and 5% for rapeseed), higher ethanol concentrations and yields (of more than 93%) were obtained. The fed-batch SSF strategy was adopted to increase the ethanol concentration further. When a higher water-insoluble solid (up to 36%) was applied, the ethanol concentration reached 56 g/L of an inhibitory concentration of the yeast strain used in this Study at 38 degrees C. The results show that the pretreated materials can be used as good feed-stocks for bioethanol production, and that the phosphoric acid-acetone Pretreatment can effectively yield a higher ethanol concentration. (C) 2009 Elsevier Ltd. All rights reserved.
Publisher
ELSEVIER SCI LTD
Issue Date
2009-07
Language
English
Article Type
Article
Keywords

CELL-RECYCLE BIOREACTOR; ETHANOL-PRODUCTION; RAPESEED PLANT; FUEL ETHANOL; STRAW; BERMUDAGRASS; HYDROLYSIS; CELLULOSE; BIOMASS; DIGESTIBILITY

Citation

BIORESOURCE TECHNOLOGY, v.100, no.13, pp.3245 - 3251

ISSN
0960-8524
DOI
10.1016/j.biortech.2009.01.021
URI
http://hdl.handle.net/10203/96834
Appears in Collection
CBE-Journal Papers(저널논문)
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