Algae species and the medium were placed into a glass cylinder (100 cm × 50 cm × 50 cm) with a volume ratio of 1:20.
Then this algae solution was cultured by two fluorescent lights (30 W) with the light cycle of L: D = 12 h: 12 h. The algae
solution was cultured under stirring by a turbine stirrer (12 W) with a period of 10 min/h until a largest concentration was
obtained.