Effect of Photo Bioreactor with Optical Panel on the Growth Rate of Chlorella vulgaris

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 µm, having round in shape.The cells of C. vulgaris was cultured in the Jaworski's Medium with deionized water at 22℃ 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.