• Journal of the Korea Organic Resources Recycling Association
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• v.23 no.1
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• pp.38-44
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• 2015

We have investigated the productivity of microalgae, Nannochloropsis sp., using highly efficient vertical photobioreactor which has been developed by the company IMBiz. This experiment was performed in the field for one month with 2 sets of 2 tons of media under autotrophic cultural mode. In the culture with 0.1% of $CO_2$, the average daily productivity was shown to be up to 0.953g per liter, and 0.574g per liter in the culture with only ambient air. The temperature ranged from $20^{\circ}C$ to $31^{\circ}C$, and it didn't make any differences on the productivity. The light intensity ranged from 5,000 Lux to 40,000 Lux. The light has been appeared to have a very close relationship with the productivity of microalgae. Meanwhile, the harvesting method of pressurefloating attempted in this photobioreactor was found to be very effective.