Figure 7

Methane production from bioaugmentation treatment at 1, 2, and 4% initial volatile solid concentration (IVC) of each substrate, including cassava bagasse (CB) (a), Napier grass (NG) (b), sugarcane bagasse (SB) (c), and filter cake (FC) (d). C (control) indicates the non-bioaugmentation treatment at various %IVC of each substrate.