Abstract：
:The luminostat regime has been proposed as a way to maximize light absorption and thus to increase the microalgae photosynthetic efficiency within photobioreactors. In this study, simulated outdoor light conditions were applied to a lab-scale photobioreactor in order to evaluate the luminostat control under varying light conditions. The photon flux density leaving the reactor (PFD(out)) was varied from 4 to 20 μmol photons m(-2)s(-1)and the productivity and photosynthetic efficiency of Chlorella sorokiniana were assessed. Maximal volumetric productivity (1.22g kg(-1)d(-1)) and biomass yield on PAR photons (400-700 nm) absorbed (1.27 g mol(-1)) were found when PFD(out) was maintained between 4 and 6 μmol photons m(-2)s(-1). The resultant photosynthetic efficiency was comparable to that already reported in a chemostat-controlled reactor. A strict luminostat regime could not be maintained under varying light conditions. Further modifications to the luminostat control are required before application under outdoor conditions.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Cuaresma M,Janssen M,van den End EJ,Vílchez C,Wijffels RHdoi
10.1016/j.biortech.2011.05.076subject
Has Abstractpub_date
2011-09-01 00:00:00pages
7871-8issue
17eissn
0960-8524issn
1873-2976pii
S0960-8524(11)00761-9journal_volume
102pub_type
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