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http://dx.doi.org/10.15433/ksmb.2014.6.2.118

Investigation of Microalgal Growth, Tetraselmis sp. KCTC12432BP by Supplying Bicarbonate on the Ocean Cultivation  

Cho, Yonghee (Department of Biological Engineering, Inha University)
Shin, Dong-Woo (Department of Biological Engineering, Inha University)
Lee, Sangmin (Department of Biological Engineering, Inha University)
Jeon, Hyonam (Department of Biological Engineering, Inha University)
Ryu, Young-Jin (Department of Biological Engineering, Inha University)
Lee, Jong-Chan (Department of Biological Engineering, Inha University)
Lim, Sang-Min (Department of Biological Engineering, Inha University)
Lee, Choul-Gyun (Department of Biological Engineering, Inha University)
Publication Information
Journal of Marine Bioscience and Biotechnology / v.6, no.2, 2014 , pp. 118-122 More about this Journal
Abstract
The ocean provide great benefits for microalgal mass cultures with maintaining stable temperature due to high specific heat, mixing by wave energy, and providing large area for large-scale microalgae cultures. In this study, we cultivated a marine green microalga, Tetraselmis sp. KCTC12432BP, using marine photobioreactors on the ocean for investigating the effect of $NaHCO_3$ concentration on the biomass productivities and evaluating the potential of ocean microalgae culture. The culture medium consist of three fold concentrated f/2-Si with 4 g/L of $NaHCO_3$, which is dissolved in natural seawater. After 11 days of cultivation, the cultures reached stationary phase at biomass concentration of 1.6 g/L. At that time, $NaHCO_3$ concentration of 0, 2, and 4 g/L were fed to the cultures. The daily productivities of 0.11, 0.19, 0.30 g/L/day were attained with feeding rate of 0, 2, and 4 g/L $NaHCO_3$, respectively. Biomass productivity of Tetraselmis sp. KCTC12432BP was a function of the $NaHCO_3$ feeding rate as expected. This research shows that the microalgae can grow with $NaHCO_3$ as carbon source in marine photobioreactors on the ocean while exploiting various benefits of ocean cultivation.
Keywords
microalgae; ocean cultivation; biodiesel; sodium bicarbonate;
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