Abstract：
:The improvement of photosynthetic efficiency in a 100 m2 raceway reactor by enhancement of light regime to which the cells are exposed is here reported. From Computational Fluid Dynamics it was calculated that the light exposure times ranged from 0.4 to 3.6 s while the exposure times to darkness were much longer, from 6 to 21 s. It was demonstrated that these times are too long for light integration, the cells fully adapting to local irradiances. This phenomenon was validated in the real outdoor raceway at different seasons. Simulations allows to confirm that if total light integration is achieved biomass productivity can increase up to 40 g/m2·day compared to 29 g/m2·day obtained considering local adaptation, which is close to the experimental value of 25 g/m2·day. This paper provides clear evidence of microalgae cell adaptation to local irradiance because of the unfavourable cell movement pattern in raceway reactors.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Barceló-Villalobos M,Fernández-Del Olmo P,Guzmán JL,Fernández-Sevilla JM,Acién Fernández FGdoi
10.1016/j.biortech.2019.02.032subject
Has Abstractpub_date
2019-05-01 00:00:00pages
404-411eissn
0960-8524issn
1873-2976pii
S0960-8524(19)30226-3journal_volume
280pub_type
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