Experimental evaluation demonstrates effective CO2 capture and biomass sedimentation in microalgae, suggesting a practical approach for energy-efficient cultivation.
Key Points
This research aims to assess how oscillatory flow conditions affect microalgal CO2 capture and biomass harvesting efficiency.
Cultivation of Chlorella vulgaris in an oscillatory flow reactor with varied frequencies (0.5–2.5 Hz) and amplitudes (6–18 mm)
Assessment of biomass productivity, CO2 capture, nutrient removal, and sedimentation kinetics
Statistical analysis to identify key influencing factors
Maximum biomass concentration attained at 2.5 Hz|6 mm was 592 mgDW L−1 with a productivity of 5.36 mgDW L−1 h−1
Complete nitrogen and near-complete phosphorus removal achieved (100% and 91%, respectively)
Sedimentation kinetics followed the Gompertz model with a rate constant of k = 4.60 h−1 at 0.5 Hz|6 mm