期刊
BIORESOURCE TECHNOLOGY
卷 289, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.121682
关键词
Thin-layer cascade photobioreactor; Microchloropsis salina; Lipid production; Nitrogen limitation; Reactor cascade; Continuous production; CO2 conversion efficiency
资金
- Bavarian State Ministry for Economic Affairs, Regional Development and Energy (Munich, Germany) [LABAY 89A]
- Bavarian State Ministry of Science and the Arts (Munich, Germany) [LABAY 89A]
- TUM Graduate School (Technical University of Munich, Germany)
Microalgal biomass is considered as the most promising feedstock for sustainable production of liquid fuels. Lipid production with Microchloropsis salina was studied in open thin-layer cascade (TLC) photobioreactors with a surface area of 8 m(2) applying a physically simulated Mediterranean summer climate. High lipid concentrations of up to 6.6 g L-1 with 46% (w w(-1)) total lipids in dry cell mass were achieved in two-phase batch processes applying a nitrogen limitation. The two-phase batch process was transferred into a continuously operated reactor cascade of two TLC photobioreactors. Microchloropsis salina cells were produced continuously in the first photobioreactor, whereas continuous lipid production was enabled in the second, nitrogen-limited TLC photobioreactor resulting in continuous production of 3.0 g L-1 lipids with a high overall lipid space-time-yield of 0.2 g L-1 d(-1). The control of alkalinity to about 10 mM resulted in high CO2 conversion efficiencies of 84-87%.
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