Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Effect of Photo Bioreactor with Optical Panel on the Growth Rate of Chlorella vulgaris

도광판 삽입 반응기가 Chlorella vulgaris 증식에 미치는 영향

  • Choi, Hee-Jeong (Department of Environmental Engineering, Kwandong University) ;
  • Lee, Seung-Mok (Department of Environmental Engineering, Kwandong University)
  • Received : 2012.05.23
  • Accepted : 2012.07.27
  • Published : 2012.07.30
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Abstract

The aim of this study was to investigate the efficiency of optical panel (OP) on the growth rate of Chlorella vulgaris (C. vulgaris). The size of C. vulgaris (FC-16) was 3~$8{\mu}m$, having round in shape. The cells of C. vulgaris was cultured in the Jaworski's Medium with deionized water at $22^{\circ}C$ for 15 days. For this experiment, three light samples were prepared to evaluate the efficiency of OP on the growth rate of C. vulgaris; OP with LED (Light Emitting Diode) (Run 1), Fluorescent light (Run 2) and LED (Run 3). The specific growth rate of C. vulgaris for Run 1 was found to be 14 times and 5 times faster than Run 2 and Run 3, respectively. In addition, the average biomass of C. vulgaris for Run 1 was measured 11.79 g/L in 11 days. This means that the biomass for Run 1 was reached 30 times and 6.5 times higher than Run 2 and Run 3, respectively. This may be due to the fact the OP was increased the light uniformity and hindered the shading effects in photobioreactor. Therefore, the growth rate of biomass in photobioreactor with OP is compared better than the without OP used other photobioreactor.

본 연구는 도광판이 Chlorella vulgaris (C. vulgaris)의 증식률에 미치는 영향을 알아보고자 하였다. 각 조건에서의 효율을 평가하기 위하여 C. vulgaris (FC-16) (3~$8{\mu}m$)를 Jaworski's Medium에 온도 $22^{\circ}C$에서 15일 증식시킨 뒤, 광원을 도광판 + LED (Run 1), 형광등 (Run 2) 그리고 LED (Run 3) 로 나누어 바이오매스의 증식률에 미치는 영향을 실험하였다. 실험결과, C. vulgaris의 비증식속도는 Run 1이 Run 2에 비해 14배 그리고 Run 3에 비해 5배 높은 비증식속도를 나타내었다. 11일을 증식시킨 후 C. vulgaris의 평균바이오매스를 비교한 결과 Run 1은 11.79 g/L를 나타내어 Run 2에 비해 30배 그리고 Run 3에 비해 6.5배나 많은 바이오매스를 나타내었다. 도광판을 사용할 경우 빛의 균일한 분포를 증가시키고 그림자 효과를 저해시켜 바이오매스의 증식률이 도광판을 사용하지 않은 반응기에 비해 월등히 높았음을 알 수 있었다.

Keywords

Acknowledgement

Supported by : 한국연구재단

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