Cultivation of <i>Chlorella sorokiniana</i> in a bubble-column bioreactor coupled with cooking cocoon wastewater treatment: effects of initial cell density and aeration rate

Abstract Previous studies have documented that Chlorella sorokiniana could grow well on cooking cocoon wastewater (CCW) with a maximum biomass of 0.49 g/L. In order to further enhance the production and nutrient removals, bubble-column bioreactor was designed performed cultivate C. in CCW, two main cultivation parameters were investigated this work. Results showed algal biomass, specific growth rate, productivity 2.83 g/L, 0.854 d−1, 476.25 g/L/d, respectively, achieved when alga cultivated an initial cell density 0.8 g/L aeration rate 3.34 L air/L culture/min; meanwhile, removal efficiencies ammonium, total nitrogen, phosphorus, chemical oxygen demand reached 97.96, 85.66, 86.43%, which significantly higher than obtained our previous studies. Moreover, compositions cells varied changes conditions (i.e., rate). Thus, it is concluded (1) suitable for coupled CCW treatment (2) affected production, removals alga.