| 초록 |
Supplying CO2 for microalgal cultivation might be difficult because of high transportation energy and low carbon utilization efficiency in marine cultivation. Whereas, NaHCO3 could be used as the alternative for carbon source of algal culture. In this study, effect of NaHCO3 concentration on the biomass productivity of Tetraselmis sp. MBEyh04Gc, was investigated. The microalgae were cultured in Floating Cube Photobioreactors (FC-PBRs) in the Young-Heung Island, Incheon, Korea. Initially, 4.0 g/L NaHCO3 was added to the cultures, and after 11 days of cultivation, when the cultures entered stationary phase, 0.0, 2.0 and 4.0 g/L NaHCO3 were supplemented additionally. The biomass productivities were 0.19, 0.28 and 0.38 g/L/day in 0.0, 2.0 and 4.0 g/L NaHCO3 supplemented groups, respectively. Maximum biomass productivity was attained by supplying 4.0 g/L NaHCO3. The results indicate that NaHCO3 could be used as a carbon source alternative to CO2 gas for biomass production in FC-PBRs. |
