@article{10272/24959, year = {2011}, month = {5}, url = {https://hdl.handle.net/10272/24959}, 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 (PFDout) was varied from 4 to 20 micromol photons m-2 s-1and the productivity and photosynthetic efficiency of Chlorella sorokiniana were assessed. Maximal volumetric productivity (1.22 g kg-1 d-1) and biomass yield on PAR photons (400–700 nm) absorbed (1.27 g mol-1) were found when PFDout was maintained between 4 and 6 micromol 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.}, organization = {This work was financially supported by the University of Huelva and Junta de Andalucía (Proyectos de Excelencia, AGR-4337) in Spain.}, title = {Luminostat operation: A tool to maximize microalgae photosynthetic efficiency in photobioreactors during the daily light cycle?}, doi = {10.1016/j.biortech.2011.05.076}, author = {Cuaresma Franco, María and Janssen, Marcel and van den End, Evert Jan and Vílchez Lobato, Carlos and Wijffels, René H.}, }