期刊
BIORESOURCE TECHNOLOGY
卷 102, 期 6, 页码 4573-4579出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.12.115
关键词
Sweet potato; Bioethanol; Simultaneous saccharification and fermentation (SSF); Viscosity reduction; Industry scale
资金
- State 863 Projects of China [2010AA101603]
- Ministry of Agriculture of the China [nycytx-16-B-15]
- Chinese Academy of Sciences [KSCX1-YW-11C4]
2010 The aim of this work was to research a bioprocess for bioethanol production from raw sweet potato by Saccharomyces cerevisiae at laboratory, pilot and industrial scales. The fermentation mode, inoculum size and pressure from different gases were determined in laboratory. The maximum ethanol concentration, average ethanol productivity rate and yield of ethanol after fermentation in laboratory scale (128.51 g/L, 4.76 g/L/h and 91.4%) were satisfactory with small decrease at pilot scale (109.06 g/L. 4.89 g/L/h and 91.24%) and industrial scale (97.94 g/L, 4.19 g/L/h and 91.27%). When scaled up, the viscosity caused resistance to fermentation parameters, 1.56 AUG/g (sweet potato mash) of xylanase decreased the viscosity from approximately 30000 to 500 cp. Overall, sweet potato is a attractive feedstock for be bioethanol production from both the economic standpoints and environmentally friendly. (C) 2011 Elsevier Ltd. All rights reserved.
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