期刊
BIORESOURCE TECHNOLOGY
卷 102, 期 8, 页码 5129-5137出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.01.078
关键词
Reactor orientation; Light dilution; Photosynthetic efficiency; Productivity; Chlorella sorokiniana
资金
- University of Huelva and Junta de Andalucia (Proyectos de Excelencia) in Spain [AGR-4337]
- SenterNovem subsidy (the Netherlands) [02013]
The productivity of a vertical outdoor photobioreactor was quantitatively assessed and compared to a horizontal reactor. Daily light cycles in southern Spain were simulated and applied to grow the microalgae Chlorella sorokiniana in a flat panel photobioreactor. The maximal irradiance around noon differs from 400 mu mol photons m(-2) s(-1) in the vertical position to 1800 mu mol photons m(-2) s(-1) in the horizontal position. The highest volumetric productivity was achieved in the simulated horizontal position, 4 g kg culture(-1) d(-1). The highest photosynthetic efficiency was found for the vertical simulation, 1.3 g of biomass produced per mol of PAR photons supplied, which compares favorably to the horizontal position (0.85 g mol(-1)) and to the theoretical maximal yield (1.8 g mol(-1)). These results prove that productivity per unit of ground area could be greatly enhanced by placing the photobioreactors vertically. (C) 2011 Elsevier Ltd. All rights reserved.
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