| 초록 |
Recently there have been many efforts to develop the measures to reduce the amount of CO2 in the combustion gas from the thermal power plant and the steel industry. Among the various approaches, there has been considerable interest in biological CO2 fixation from the viewpoint of clean and energy-efficient technique. In this work, we studied on the development of a novel microbial culture system (photobioreactor) for maximizing the rate of CO2 fixation. To achieve the more economic process, we developed the various types of enclosed photobioreactors with high surface-to-volume ratios (S/V). As a model photosynthetic microorganism, Synechococcus sp PCC6301, an unicellular cyanobacterium, was chosen since it grows at higher rate than eucaryotic algae. Then several effects such as inlet CO2 concentration, irradiance, aeration rate, and temperature on cell growth were investigated for the optimal cultivation. At this optimal culture condition, the performances of the newly-designed photobioreactors were compared from the viewpoint of CO2 fixation rate.
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