Figure 3

Torque and impeller speed profiles during enzymatic hydrolysis of arundo and spruce at controlled power inputs. Torque (A,C) and impeller speed (B,D) during enzymatic hydrolysis of arundo (A,B) and spruce (C,D) at controlled power input. For around (A,B), the power input was kept constant at 0.10 W for 10% WIS, 0.17 W for 15% WIS and 0.46 W for 20% WIS. All spruce experiments were performed at a constant power input of 0.46 W regardless of WIS content. Blue = 10% WIS, Green = 15% WIS and Red = 20% WIS.