Journal
BIORESOURCE TECHNOLOGY
Volume 129, Issue -, Pages 680-685Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.11.142
Keywords
Butanol; Continuous fermentation; Corn stover hydrolysate (CSH); Cane molasses; Dilution rate
Funding
- National High Technology Research and Development Program of China [2011CB710800]
- New Century Excellent Talents in University [NCET-11-0658]
- Natural Science Foundation of Jiangsu Province [BK2011150]
- Program of Introducing Talents of Discipline to Universities [111-2-06]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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Corn stover hydrolysate (CSH) and cane molasses were studied for butanol fermentation by Clostridium saccharobutylicum DSM 13864 in continuous fermentation. Using cane molasses as substrate, solvent of 13.75 g/L (butanol 8.65 g/L) and productivity of 0.439 g/L/h were achieved in a four-stage continuous fermentation at a gradient dilution mode of 0.15-0.15-0.125-0.1 h(-1). In continuous fermentation using CSH as substrate, total solvent titer of 11.43 g/L (butanol 7.81 g/L) and productivity of 0.429 g/L/h were reached at a dilution rate of 0.15 h(-1), and the steady process was continuously operated for 220 h without compromise in solvent titer. (C) 2012 Elsevier Ltd. All rights reserved.
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