期刊
BIORESOURCE TECHNOLOGY
卷 101, 期 22, 页码 8725-8730出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.06.112
关键词
Microalgae; Scenedesmus obliquus; CO2 fixation; Lipid production
资金
- Taiwan's Ministry of Economical Affairs [98-EC-17-A-10-S2-0066]
- Taiwan's National Science Council [NSC 98-2221-E-006-240-MY3, NSC 98-3114-E-006-012]
This study aimed to achieve higher CO2 consumption ability and lipid productivity of an indigenous microalgal isolate Scenedesmus obliquus CNW-N by a two-stage cultivation strategy. The microalga strain was first cultivated with 10% CO2 using a nutrient-rich medium to promote cell growth, which was followed by a nutrient-deficient condition to trigger lipid accumulation. The optimal biomass productivity, lipid productivity, and CO2 consumption rate were 292.50 mg L-1 d(-1), 78.73 mg L-1 d(-1) (38.9% lipid content per dry weight of biomass), and 549.90 mg L-1 d(-1), respectively. This performance is superior to the results from most of the related studies. Under the nutrient-deficient condition, the microalgal lipid was mainly composed of C16/C18 fatty acids (accounting for 89% of total fatty acids), which is suitable for biodiesel synthesis. (C) 2010 Elsevier Ltd. All rights reserved.
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