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http://dx.doi.org/10.4491/KSEE.2011.33.8.591

Cultivation of Chlorella Sp. Using Light Emitting Diode  

Lee, Tae-Yoon (Department of Environmental Engineering, Pukyong National University)
Choi, Bo-Ram (Department of Environmental Engineering, Pukyong National University)
Lee, Jea-Keun (Department of Environmental Engineering, Pukyong National University)
Lim, Jun-Heok (Department of Environmental Engineering, Pukyong National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.33, no.8, 2011 , pp. 591-597 More about this Journal
Abstract
The purpose of this study was to determine optimum conditions for the cultivation of Chlorella sp. FC-21 using light emitting diodes (LEDs). Specific growth rate and cell concentration were measured for the reactors at the illuminations of different wavelengths of LEDs. Among various types of LEDs, red LEDs were the most effective light source, and also greatest increases of specific growth rate and cell concentrations were obtained when light intensity of red LEDs increased. The specific growth rate decreased when initial cell concentration increased due to the shading effect of each cell in the reactor. To determine beneficial effect of aeration to cell cultivation, micro-air bubbles were aerated at 0.35 vvm in the reactor at the illumination of red LEDs. Two and ten times greater specific growth rate and cell concentration were obtained when aeration was applied. From this study, we found that red LEDs with aeration were the most appropriate light source for the cultivation of Chlorella sp. FC-21.
Keywords
Light Emitting Diodes; Chlorella sp. FC-21; RED LEDs; Carbon Dioxide; Photobioreactor;
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Times Cited By KSCI : 2  (Citation Analysis)
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