Abstract |
The green alga Botryococcus braunii is regarded as a potential source of renewable fuel due to its high lipid and hydrocarbon contents. However, the slow growth rate damaged its feasibility for biofuel production. In this study, a novel method of 'attached cultivation' was introduced to incubate B. braunii FACHB 357 (B race). A high biomass productivity of 6.5 gm(-2)d(-1) was achieved in single layer attached system at early stage of cultivation. At day 10, the biomass, lipid and hydrocarbon productivities were 5.5, 2.34 and 1.06 gm(-2)d(-1), respectively. Under nitrogen starvation condition, both of the contents of lipid and hydrocarbon were increased, whereas the profile of hydrocarbon kept almost unchanged, while the content for oleic acid (18:1) increased and linolenic acid (18:3) decreased. With a multi-layer photobioreactor, a biomass productivity of 49.1 gm(-2)d(-1) or a photosynthetic efficiency of 14.9% (visible light) were obtained under continuous illumination of 500 μmolm(-2)s(-1).
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Authors | Pengfei Cheng, Bei Ji, Lili Gao, Wei Zhang, Junfeng Wang, Tianzhong Liu |
Journal | Bioresource technology
(Bioresour Technol)
Vol. 138
Pg. 95-100
(Jun 2013)
ISSN: 1873-2976 [Electronic] England |
PMID | 23612166
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Copyright | Copyright © 2013 Elsevier Ltd. All rights reserved. |
Chemical References |
- Fatty Acids
- Hydrocarbons
- Lipids
- Nitrogen
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Topics |
- Biomass
- Cell Culture Techniques
(instrumentation, methods)
- Chlorophyta
(drug effects, growth & development, metabolism, radiation effects)
- Fatty Acids
(metabolism)
- Hydrocarbons
(metabolism)
- Light
- Lipids
(biosynthesis)
- Nitrogen
(pharmacology)
- Photobioreactors
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