| 초록 |
Large quantities of fertilizers and water requirements are obstacles for economic and sustainable production of biofuels from microalgae. Seawater can provide both nutrients and water, so using seawater for microalgae cultivation can decrease the microalgal biofuel production cost. However, seawater contains total suspended solids (TSSs) which could affect the microalgal biomass productivity. In this study, the effect of TSSs in natural seawater from West Sea on microalgal biomass productivity of a marine microalga, Tetraselmis sp. KCTC12429BP was investigated. TSSs were collected from seawater of Yeongheung Island, Incheon, and were added to artificial seawater with f/2-Si medium with and without sterilization. Sterilized TSSs decreased 11% of overall biomass productivity, while non-sterilized TSSs decreased biomass productivity by 17%. This result suggest that TSSs include microbes that negatively affect microalgal biomass productivity. Thus, when using natural seawater for microalgal cultivation, simple and cheap methods to eliminate the inflow of TSSs need to be implemented. |
