Figure 2

Total nitrogen (TN) concentration under different dilution ratios during microalgae cultivation. (a) TN concentration changes in control 1 (BG-11), control 2 (domestic wastewater; DWW), and control 3 (livestock wastewater; LWW). (b) TN concentration changes for T/L dilution ratios of 75%, 50%, and 25%. (c) TN concentration changes for D/L dilution ratios of 75%, 50%, and 25%. T/L and D/L represent the dilution of tap water to LWW and DWW to LWW (v/v), respectively.