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Growth of algal biomass in laboratory and in large-scale algal photobioreactors in the temperate climate of western Germany

C. Schreiber, D. Behrendt, G. Huber, C. Pfaff, J. Widzgowski, B. Ackermann, A. Müller, V. Zachleder, Š. Moudříková, P. Mojzeš, U. Schurr, J. Grobbelaar, L. Nedbal,

. 2017 ; 234 (-) : 140-149. [pub] 20170307

Language English Country England, Great Britain

Document type Journal Article

Persistent link   https://www.medvik.cz/link/bmc17023197

Growth of Chlorella vulgaris was characterized as a function of irradiance in a laboratory turbidostat (1L) and compared to batch growth in sunlit modules (5-25L) of the commercial NOVAgreen photobioreactor. The effects of variable sunlight and culture density were deconvoluted by a mathematical model. The analysis showed that algal growth was light-limited due to shading by external construction elements and due to light attenuation within the algal bags. The model was also used to predict maximum biomass productivity. The manipulative experiments and the model predictions were confronted with data from a production season of three large-scale photobioreactors: NOVAgreen (<36,000L), IGV (2,500-3,500L), and Phytolutions (28,000L). The analysis confirmed light-limitation in all three photobioreactors. An additional limitation of the biomass productivity was caused by the nitrogen starvation that was used to induce lipid accumulation. Reduction of shading and separation of biomass and lipid production are proposed for future optimization.

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$a Growth of algal biomass in laboratory and in large-scale algal photobioreactors in the temperate climate of western Germany / $c C. Schreiber, D. Behrendt, G. Huber, C. Pfaff, J. Widzgowski, B. Ackermann, A. Müller, V. Zachleder, Š. Moudříková, P. Mojzeš, U. Schurr, J. Grobbelaar, L. Nedbal,
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$a Growth of Chlorella vulgaris was characterized as a function of irradiance in a laboratory turbidostat (1L) and compared to batch growth in sunlit modules (5-25L) of the commercial NOVAgreen photobioreactor. The effects of variable sunlight and culture density were deconvoluted by a mathematical model. The analysis showed that algal growth was light-limited due to shading by external construction elements and due to light attenuation within the algal bags. The model was also used to predict maximum biomass productivity. The manipulative experiments and the model predictions were confronted with data from a production season of three large-scale photobioreactors: NOVAgreen (<36,000L), IGV (2,500-3,500L), and Phytolutions (28,000L). The analysis confirmed light-limitation in all three photobioreactors. An additional limitation of the biomass productivity was caused by the nitrogen starvation that was used to induce lipid accumulation. Reduction of shading and separation of biomass and lipid production are proposed for future optimization.
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$a Behrendt, Dominik $u Institute of Bio- and Geosciences/Plant Sciences (IBG-2), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany.
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$a Huber, Gregor $u Institute of Bio- and Geosciences/Plant Sciences (IBG-2), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany.
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$a Pfaff, Christian $u Institute of Bio- and Geosciences/Plant Sciences (IBG-2), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany.
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$a Widzgowski, Janka $u Institute of Bio- and Geosciences/Plant Sciences (IBG-2), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany.
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$a Ackermann, Bärbel $u Institute of Bio- and Geosciences/Plant Sciences (IBG-2), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany. $7 gn_A_00001012
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$a Müller, Andreas $u Institute of Bio- and Geosciences/Plant Sciences (IBG-2), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany.
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$a Zachleder, Vilém $u Institute of Bio- and Geosciences/Plant Sciences (IBG-2), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany; Laboratory of Cell Cycles of Algae, Center AlgaTech, Institute of Microbiology CAS, Opatovický mlýn, 37981 Třeboň, Czech Republic.
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$a Moudříková, Šárka $u Institute of Bio- and Geosciences/Plant Sciences (IBG-2), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany; Institute of Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 12116 Praha 2, Czech Republic.
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$a Mojzeš, Peter $u Institute of Bio- and Geosciences/Plant Sciences (IBG-2), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany; Institute of Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 12116 Praha 2, Czech Republic.
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$a Schurr, Ulrich $u Institute of Bio- and Geosciences/Plant Sciences (IBG-2), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany.
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$a Grobbelaar, Johan $u Institute of Bio- and Geosciences/Plant Sciences (IBG-2), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany; Department of Plant Sciences, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa.
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$a Nedbal, Ladislav $u Institute of Bio- and Geosciences/Plant Sciences (IBG-2), Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany. Electronic address: l.nedbal@fz-juelich.de.
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