Journal
BIORESOURCE TECHNOLOGY
Volume 127, Issue -, Pages 216-222Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.09.100
Keywords
Microalgae; Biodiesel; Attached cultivation; Biomass productivity; Photosynthetic efficiency
Funding
- Key Technologies R&D Program from Ministry of Science and Technology of China [2011BAD14B01]
- Solar Energy Initiative Plan [KGCX2-EW-309]
- International Innovation Partnership Program from Chinese Academy of Sciences
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The potential of microalgae biofuel has not been realized because of low productivity and high costs associated with the current cultivation systems. In this paper, an attached cultivation method was introduced, in which microalgae cells grew on the surface of vertical artificial supporting material to form algal film. Multiple of the algal films were assembled in an array fashion to dilute solar irradiation to facilitate high photosynthetic efficiency. Results showed that a broad range of microalgae species can grow with this attached method. A biomass productivity of 50-80 g m(-2) d(-1) was obtained outdoors for Scenedesmus obliquus, corresponding to the photosynthetic efficiency of 5.2-8.3% (total solar radiation). This attached method also offers lots of possible advantages over traditional open ponds, such as on water saving, harvesting, contamination controlling and scale-up. The attached cultivation represents a promising technology for economically viable production of microalgae biofuels. (C) 2012 Elsevier Ltd. All rights reserved.
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