OPTIMIZED CULTURE CONDITIONS FOR CHLORELLA SP. BASED ON NITROGEN AND PHOSPHORUS ABSORPTION KINETICS

Achieving large-scale cultivation of microalgae and accessing effectively to the target product are the significant foundation for suitable culture conditions. But it lacks the strategy on absorption and utilization of nitrogen and phosphorus for large-scale breeding of Chlorella. This study did experiment on the growth of Chlorella and the consumption of nitrogen, phosphorus under the condition of static culture, ventilation and aeration external carbon source culture, using fed-batch sampling methods on training process. The results showed that the pH of algal liquid slightly decreased and changed between 7 to 9. In the algae culture of ventilation and carbon source in fed-batch sampling optimization, the growth rate was affected slightly in the middle and the highest biomass was up to 3565 mg/(L[bullet]d) per unit of time.