However, comparing with the ratio 3:2 and the ratio 2:3, the
ratio 2:3 degraded with 90 g corncob made better use of corncob
than the ratio 3:2 with 200 g corncob, but the ratio 3:2 produced
more biogas and methane than the ratio of 2:3 in the same working
volume, the ratio 3:2 provided greater economic value.