NDLI: Outdoor open thin-layer microalgal photobioreactor: potential productivity

Content Provider	Springer Nature Link
Author	Doucha, J. Lívanský, K.
Copyright Year	2008
Abstract	We have previously estimated the productivity and photosynthetic efficiency of the microalga Chlorella sp. grown in an outdoor open thin-layer photobioreactor under climate conditions typical of the Middle European region, i.e. with many days unsuitable for intensive growth of algae (cloudy and rainy days, low air temperature, low solar PAR input).To estimate the real potential productivity of the bioreactor, we collected data on algae yields obtained during clear summer day periods. Cultivation was performed in fed-batch cycles in a bioreactor with a 224 m$^{2}$ culture area (length 28 m, slope 1.7%), and a 6–7 mm-thick layer of algal culture. The suspension volume in the bioreactor was 2,000 L. The mean values found for Třeboň (49°N), Czech Republic, as an average of several sunny summer cultivation periods in July, were: net areal productivity, P $_{net}$ = 38.2 g dry weight (DW) m$^{-2}$ day$^{-1}$; net volumetric productivity, P$_{vol,}$ = 4.3 g algal DW L$^{-1}$ day$^{-1}$, photosynthetic efficiency (based on PAR), η$_{net}$ = 7.05%. The peak values were: P $_{net}$ about 50 g (DW) m$^{-2}$ day$^{-1}$, η$_{net}$ about 9%. Algal growth rate was practically linear up to high biomass densities (40–50 g DW L$^{-1}$, corresponding to an areal density of 240–300 g DW m$^{-2}$), at which point the culture was harvested. The concentration of dissolved oxygen increased from about 10 mg L$^{-1}$ at the beginning to about 23 mg L$^{-1}$ at the end of culture area at noon. Use of the above-described technology for economical production of bioethanol is proposed.
Starting Page	111
Ending Page	117
Page Count	7
File Format	PDF
ISSN	09218971
Journal	Journal of Applied Phycology
Volume Number	21
Issue Number	1
e-ISSN	15735176
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-05-22
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Productivity Photobioreactor Thin layer Sunny days Bioethanol Ecology Plant Physiology Freshwater & Marine Ecology Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Plant Science Aquatic Science

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Erratum to: Outdoor open thin-layer microalgal photobioreactor: potential productivity

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