Effect of Temperature, Light Intensity and pH on the Growth Rate of Chlorella Vulgaris
온도, 광세기 및 pH에 따른 Chlorella Vulgaris 증식률

Hee-Jeong Choi, Seung-Mok Lee
2011 Journal of Korean Society of Environmental Engineers  
The aim of this study was to investigate the efficiency of temperature, light intensity and pH on the growth rate of Chlorella vulgaris (C. vulgaris). The size of C. vulgaris (FC-16) was 3-8 µm, having round in shape. The cells of C. vulgaris (FC-16) was cultured in the Jaworski's Medium with deionized water. To evaluate the efficiency of temperature, light intensity and pH on the growth rate of C. vulgaris, six different fractions of temperature (10℃, 15℃, 20℃, 25℃, 30℃, 35℃), various light
more » ... ), various light intensities (100-800 µEm -2 s -1 ) and seven different fractions of pH (3, 4, 5, 6, 7, 7.5, 9) were prepared. The growth rate of C. vulgaris cultivation was approximately 5.2 to 5.5 times faster, the concentration of Chlorophyll a was also 5 to 5.5 times higher, and cell volume per unit area was 14% higher at 25℃ to 30℃ than those at 10℃. Therefore, the optimal temperature for cultivation of C. vulgaris was estimated 25℃ to 30℃. The growth rate of C. vulgaris increased slowly up to 5 days, exploded after 5 days until 15 days, and then stoped after that. The optimum cultivation period of C. vulgaris was estimated as 15 days. The optimum pH for the growth rate of C. vulgaris was determined pH 7 to 7.5.
doi:10.4491/ksee.2011.33.7.511 fatcat:362gnd4nzrbq7hjixfu4eucl6y