Journal article
Turbidostat operation of outdoor pilot-scale photobioreactors
Algal research (Amsterdam), Vol.18, pp.198-208
09/01/2016
DOI: 10.1016/j.algal.2016.06.006
Abstract
The effect of biomass concentration on areal productivity and photosynthetic efficiency of Nannochloropsis sp. CCAP211/78 was studied in three outdoor pilot-scale photobioreactors: an open raceway pond (OPR), a horizontal tubular (HT) photobioreactor and a vertically stacked horizontal tubular (VT) photobioreactor. The reactors were operated continuously as turbidostat at different biomass concentrations. For all systems highest areal productivities were obtained on days with a high light intensity, while the highest photosynthetic efficiencies were obtained on days with a low light intensity. Ground areal biomass concentration exceeding 51gm−2 had a negative effect on the areal productivity and photosynthetic efficiency. No significant effect of biomass concentration on the productivity was found for the HT at ground areal biomass concentration lower than 51gm−2. Also for the VT, no significant effect of biomass concentration was found with the exception of the highest biomass concentration of 2.0gL−1 (68gm−2) resulting in decreased productivity. For the open raceway pond the highest biomass concentration (0.5gL−1 or 94gm−2) resulted in significantly lower areal productivity, compared to the lower biomass concentration (0.25gL 47gm−2). Highest areal productivities were obtained for OPR and VT, most likely due to more efficient light interception. In this study we observed that night biomass loss was coupled to net growth. At lower biomass concentrations and concomitant higher growth rates the specific biomass loss rate was higher. Microalgal specific light absorption coefficient was correlated to biomass concentration; higher biomass concentrations resulted in higher specific absorption coefficients, resulting in a steeper light gradient in the microalgal cultures.
Details
- Title: Subtitle
- Turbidostat operation of outdoor pilot-scale photobioreactors
- Creators
- Jeroen H. de Vree - Wageningen University & ResearchRouke Bosma - Wageningen University & ResearchRick Wieggers - Wageningen University & ResearchSnezana Gegic - Wageningen University & ResearchMarcel Janssen - Wageningen University & ResearchMaria J. Barbosa - Bioprocess Engineering, AlgaePARC, Wageningen University, P.O. Boxs 16, 6700 AA Wageningen, the NetherlandsRené H. Wijffels - Nord University
- Resource Type
- Journal article
- Publication Details
- Algal research (Amsterdam), Vol.18, pp.198-208
- DOI
- 10.1016/j.algal.2016.06.006
- ISSN
- 2211-9264
- eISSN
- 2211-9264
- Publisher
- Elsevier B.V
- Grant note
- name: Dutch Ministry of Economic Affairs, Agriculture and Innovation, award: TRCDKI/2010/0956; name: Province of Gelderland and Biosolar Cells; DOI: 10.13039/100004349, name: BASF; name: BioOils; name: Drie Wilgen Development; name: DSM; DOI: 10.13039/100004371, name: Exxon Mobil; name: GEA Westfalia Separator; name: Heliae; name: Neste; name: Nijhuis; name: Paques; name: Cellulac; name: Proviron; name: Roquette; DOI: 10.13039/501100007164, name: SABIC; name: Simris Alg; name: Staatsolie Suriname; name: Synthetic Genomics; DOI: 10.13039/501100007185, name: TOTAL; DOI: 10.13039/100007190, name: Unilever
- Language
- English
- Date published
- 09/01/2016
- Academic Unit
- International Programs; Spanish and Portuguese
- Record Identifier
- 9984397910302771
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