Journal article
Comparison of growth of Tetraselmis in a tubular photobioreactor (Biocoil) and a raceway pond
Journal of Applied Phycology, Vol.26(1), pp.247-255
2014
Abstract
Microalgae cultivation systems can be divided broadly into open ponds and closed photobioreactors. This study investigated the growth and biomass productivity of the halophilic green alga Tetraselmis sp. MUR-233, grown outdoors in paddle wheel-driven open raceway ponds and in a tubular closed photobioreactor (Biocoil) at a salinity of 7 % NaCl (w/v) between mid-March and June 2010 (austral autumn/winter). Volumetric productivity in the Biocoil averaged 67 mg ash-free dry weight (AFDW) L-1 day-1 when the culture was grown without CO2 addition. This productivity was 86 % greater, although less stable, than that achieved in the open raceway pond (36 mg L-1 day-1) grown at the same time in the autumn period. The Tetraselmis culture in the open raceway pond could be maintained in semi-continuous culture for the whole experimental period of 3 months without an additional CO2 supply, whereas in the Biocoil, under the same conditions, reliable semi-continuous culture was only achievable for a period of 38 days. However, stable semi-continuous culture was achieved in the Biocoil by the addition of CO2 at a controlled pH of ~7.5. With CO2 addition, the volumetric biomass productivity in the Biocoil was 85 mg AFDW L-1 day-1 which was 5.5 times higher than the productivity achieved in the open raceway pond (15 mg AFDW L-1 day-1) with CO2 addition and 8 times higher compared to the productivity in the open raceway pond without CO2 addition (11 mg AFDW L-1 day-1), when cultures were grown in winter. The illuminated area productivities highlight an alternative story and showed that the open raceway pond had a three times higher productivity (3,000 mg AFDW m-2 day-1) compared to the Biocoil (850 mg AFDW m-2 day-1). Although significant differences were found between treatments and cultivation systems, the overall average lipid content for Tetraselmis sp. MUR-233 was 50 % in exponential phase during semi-continuous cultivation
Details
- Title
- Comparison of growth of Tetraselmis in a tubular photobioreactor (Biocoil) and a raceway pond
- Authors/Creators
- E.J. Raes (Author/Creator) - Murdoch UniversityA. Isdepsky (Author/Creator) - Murdoch UniversityK. Muylaert (Author/Creator) - Knowledge Unlatched (Germany)M.A. Borowitzka (Author/Creator) - Murdoch UniversityN.R. Moheimani (Author/Creator) - Murdoch University
- Publication Details
- Journal of Applied Phycology, Vol.26(1), pp.247-255
- Publisher
- Springer Verlag
- Identifiers
- 991005540139207891
- Copyright
- © 2013 Springer Science+Business Media Dordrecht.
- Murdoch Affiliation
- School of Veterinary and Life Sciences
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.171 Photoproductivity
- 3.171.477 Microalgae Biotechnology
- Web Of Science research areas
- Biotechnology & Applied Microbiology
- Marine & Freshwater Biology
- ESI research areas
- Plant & Animal Science