ผลของตัวแปรต่อการตรึงคาร์บอนไดออกไซด์โดยสาหร่ายขนาดเล็กในเครื่องปฏิกรณ์ชีวภาพ / ชาญชัย อมรรัตนานุเคราะห์ = Effect of variables on carbon dioxide fixation by microalgae in bioreactor / Chanchai Amornrattananukhor
Microalgae is an alternative for removing carbon dioxide from combustion processes back to biomass form. Thus in this research, Chlorella sp. was cultured to study the effects of light intensity, carbon dioxide concentration, feed rate of carbon dioxide, and the speed of mixing on the growth in NS III media under 30.9 degree celcius and 12-12 hours of light-dark period. It was found that only light intensity affects the growth efficiency of Chlorella sp. From the experimental result, the relasionship for predicting the growth can be described as: µ = 0.00025235I + 0.5116 where µ was the growth coefficient of Chlorella sp. and I was the light intensity. The condition providing the maximum growth coefficient was at 3000 lux light intensity, 12 L/hr CO₂ feed, with 10% CO₂ concentration and 100 rpm mixing speed. The growth coefficient was 1.16 per day. For carbon dioxide fixation, it was found that, at the same condition, the maximum biomass was produced. The carbon content was 149.72 µg/ml solution.