Control of CO2 Input Conditions During Outdoor Culture of Chlorella Vulgaris in Bubble Column Photobioreactors
Scientists from Singapore conducted a study to optimize the CO2 usage during outdoor microalgae cultivation in order to increase the CO2 to biomass conversion efficiency. Different CO2 input conditions were studied.
A 2% CO2 with intermittent supply did not affect the algal growth as compared to having a continuous supply of 2% CO2. During both the input conditions the conversion efficiency of CO2 to biomass doubled, with reduction in amount of CO2 used by 50%. These results could be applied for large-scale microalgae production in order to minimize cultivation and energy costs.