Biomass production and physiology of Chlorella vulgaris during the early stages of immobilized state are affected by light intensity and inoculum cell density

The interest for biofilm-based systems microalgae and related compounds production has been increasing lately. Although extensive literature reported on productivity, the physiological characterization (photosynthetic activity composition) of attached cells at early stages biofilm development seldom investigated. In this work, effect light intensity inoculum cell density 3-days Chlorella vulgaris biofilms developed membranes was studied. Biomass clearly impacted by mechanism photo-limitation occurring in acclimated to low (50 μmol m−2 s−1). A higher electron transport capacity lower chlorophyll content high (500 s−1) were also measured which are line with patterns observed suspended cultures. addition, optimal conditions terms (250 combined (4.8 × 106 cm−2) or (28.8 identified optimize biomass lipids production, respectively. On whole, measuring profiles immobilized initial provides information efficiently operate systems.