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http://dx.doi.org/10.4491/KSEE.2012.34.9.630

Optimum Cultivation Condition of Dunaliella Salina: Effects of Light Emitting Diode as a Lighting Source, Temperature, Light Intensity and Air Flow Rates  

Choi, Boram (Department of Environmental Engineering, Pukyung National University)
Kim, Dongsu (Department of Environmental Engineering, Pukyung National University)
Lee, Taeyoon (Department of Environmental Engineering, Pukyung National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.34, no.9, 2012 , pp. 630-636 More about this Journal
Abstract
The purpose of this study was to determine optimum wavelength, light intensity, aeration rate, and temperature for the cultivation of Dunaliella salina illuminated by various types of light emitting diode. Growth rates of Dunaliella salina were faster at higher temperature than the growth rate at lower temperature. Among the culturing temperatures, $22^{\circ}C$ was the optimum temperature for the growth of Dunaliella salina. White LED was the most efficient light source and lower light intensity (3,000 Lux) resulted in better biomass production (1.30 g/L). The value of aeration varied between 0 and 2.4 vvm at the illumination of 3,000 Lux of white light emitting diode. Highest specific growth rate of $1.12day^{-1}$ was obtained at no-aeration and lower specific growth rates were obtained for other aeration tests, which indicated that aeration could be harmful for the cultivation of Dunaliella salina.
Keywords
Light Emitting Diode; Photo-Bioreactor; Dunaliella salina; Optimum Wavelength; Light Intensity; Aeration;
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