Figure 1

Experimental assessment of the tolerance capability in synthetic wastewater. Comparison of growth rates of four Chlorella strains (Chlorella sorokiniana BD09, Chlorella sorokiniana BD08, Chlorella sp. Dachan, and Chlorella sorokiniana UTEX 1602) in (a) pure BG11 culture system as the control group, (b) low concentration treatment group, (c) middle concentration treatment group, and (d) high concentration treatment group. The visualization of concentrations among the four strains in synthetic wastewater culture for 3 days was present in (e).