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- W2945067720 abstract "A bubble column photobioreactor (BCPBR) was developed to cultivate microalgae providing high specific growth rate, specific productivity and fatty acid content. Chlorococum humicola TISTR 8551 was obtained from TISTR. The BCPBR was fabricated from a clear acrylic column with a working volume of 10 L and a column height to diameter ratio of 4.0. The microalgae was grown under batch and semi-continuous cultivations in BG-11 mixed with trace metal solution (TMS) 1 mL/1 L of culture broth while pH was maintained within a range of 6.5 – 8.5 at 28-32 o C. An initial optical density of cell was 0.1 and air was fed into the BCPBR for 24 h. Light was obtained from cool-white fluorescence with an intensity of 3,500 lux with light and dark period of 12 h/12 h. The culture period of batch cultivation was 14 days and these for semi-continuous cultivation were three culture broth replaced length of 3, 5 and 7 days. It was found that the highest specific growth rate of 0.162 day - 1 was obtained from batch cultivation. The length of culture broth replacement exhibited little effect on the specific growth rate during semi-continuous cultivations. The specific productivity of 0.742 g L - 1 day - 1 gained from batch cultivation was higher than those of semi-continuous cultivations. This was due to all the length of culture broth replacement periods were not long enough to provide the algae to growth efficiently. These experimental results indicated that the batch cultivation was better condition. However, an amount of accumulated fatty acid obtained from both batch and semi-continuous cultivations was slightly different with 20-26 percent of accumulated cell dry weight. Keywords : green microalgae, photobioreactor, specific growth rate, specific productivity" @default.
- W2945067720 created "2019-05-29" @default.
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- W2945067720 date "2019-05-13" @default.
- W2945067720 modified "2023-09-24" @default.
- W2945067720 title "Development of a Bubble Column Photobioreactor for Microalgal Culture" @default.
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