Abstract
Under autotrophic conditions, highly productive biodiesel production was achieved using a semi-continuous culture system in Neochloris oleoabundans. In particular, the flue gas generated by combustion of liquefied natural gas and natural solar radiation was used for cost-effective microalgal culture system. In semi-continuous culture, the greater part (∼80 %) of the culture volume containing vegetative cells grown under nitrogen-replete conditions in a first photobioreactor (PBR) was directly transferred to a second PBR and cultured sequentially under nitrogen-depleted conditions for accelerating oil accumulation. As a result, in semi-continuous culture, the productivities of biomass and biodiesel in the cells were increased by 58 % (growth phase) and 51 % (induction phase) compared to the cells in batch culture, respectively. The semi-continuous culture system using two stage photobioreactors is a very efficient strategy to further improve biodiesel production from microalgae under photoautotrophic conditions.
Original language | English |
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Pages (from-to) | 1415-1421 |
Number of pages | 7 |
Journal | Bioprocess and Biosystems Engineering |
Volume | 38 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2015 Jul 29 |
Keywords
- Closed-photobioreactor
- Flue gas
- Natural sunlight
- Neochloris oleoabundans
- Photoautotrophic biodiesel production
- Semi-continuous process
ASJC Scopus subject areas
- Biotechnology
- Bioengineering