Fig. 2
From: Optimal cultivation concentration of duckweed for pollutant removal from biogas slurry
Productivity curve of duckweed at different biogas slurry concentrations. (A), (B), and (C) represent productivity at 7 days, 14 days, and 21 days, respectively. CK: No biogas slurry added; 2-10%: Biogas slurry added at the percentages indicated on the labels. The data represent three replicates for each treatment.
