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Microalgae Production using a Hybrid Photobioreactor-Open Pond System for Biofuel Precursors and Co-Products

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Global interest in microalgae cultivation continues to escalate in response to the world’s quest for sustainable biofuel feedstocks, protein feeds and nutraceuticals. However, significant challenges remain in the large scale photoautrophic production of microalgal biomass at reasonable cost, and multifarious threats exist to achieving consistent, robust cultivation systems in an integrated technology line-up. Emphasis must be placed on the generation of intracellular lipid biofuel precursors, protein, and high value products, such as omega-3 fatty acids, if the techno-economics are to be viable for commercialization of the technology. Adopting a biorefinery approach to microalgae cultivation must be emphasized, as well as application of advanced biotechnologies to boost productivity. Techniques such as the use of fixed-carbon sources in a mixotrophic system, and the use of cell selection techniques such as flow cytometry for improved strain phenotypes will be highlighted.

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  • Jeff OBBARD Department of Civil & Environmental Engineering, National University of Singapore, Singapore, Scientific Advisor, Cellana LLC, Natural Energy Laboratory of the Hawaiian Authority (NELHA), Kona-Kailua, Hawaii, USA.

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