Journal
BIORESOURCE TECHNOLOGY
Volume 118, Issue -, Pages 594-597Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.05.023
Keywords
Trichosporon coremiiforme; Butanol fermentation wastewaters; Microbial oil; Biodiesel
Funding
- industrialization project of high-new technology of Guangdong province [2009B011200008]
- Chinese Academy of Sciences [KSCX2-YW-G-063]
- support plan project of National Science and Technology [2012BAD32B07]
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From the distillation process after butanol fermentation, wastewaters mainly consisted of organic acids and residual sugars and with high COD (usually >20,000 mg/L) are generated. Without any pretreatment and adding other nutrients (nitrogen sources and trace elements), these wastewaters were used as substrate for microbial oil production by oleaginous yeast Trichosporon coremiiforme. After 5 days' lipid fermentation, all the sugars and organic acids measured were totally utilized by T. coremiiforme and a 68% of COD degradation could be obtained. The highest biomass and lipid content of T. coremiiforme on the wastewaters were 5.8 g/L and 19.1%, respectively. This work shows that T. coremiiforme is a promising strain for microbial oil production on the wastewaters after butanol fermentation. (C) 2012 Elsevier Ltd. All rights reserved.
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