CO2 transfer rates were characterized at full-scale in an algal open pond.
A pH set point above optimal value of 7.2 reduces CO2 losses and algal productivity.
Water level does not impact CO2 losses and operational costs but energetic needs.
Reducing the paddle wheel rotation speed from 29 to 13 rpm lowers CO2 losses by 61%.
Optimizing the design of CO2 injection could reduce CO2 costs by a factor 3.3.