| 초록 |
The production of biofuels using microalgae can reduce inappropriate usage of fossil fuels to results in environment problems such as air pollution and global warming. Also, microalgal cultivation in the ocean could reduce large portion of energy needed to regulate mixing, light, and temperature condition. In this study, Tetraselmis sp. MBEyh04Gc was cultivated and the effect of CO2 filling frequency was investigated in offshore cultivation using tubular module photobioreactors (TM-PBRs). As the results, biomass concentration and biomass productivity were 0.78 g L-1 and 6.8 g m-2 d-1 in the PBRs filled with CO2 every 3 days. In the PBRs filled with CO2 every 6 days, biomass concentration and biomass productivity were significantly increased to 3.18 g L-1 and 12.6 g m-2 d-1. The results indicate that CO2 filling frequency should be considered to improve the biomass concentration by maintaining the pH of culture within optimal range for maximal biomass productivity. |
