for all M:WM ratios except M:WM 70:30 and 0:100
(P> 0.05). Similarly, at OL40 and OL60, increasing waste milk concentration significantly increased production (P< 0.05), except for
M:WM 0:100 and treatment with inhibition (M:WM 10:90 at
OL40). However, compared to M:WM 70:30, the production for
M:WM 50:50, 30:70 and 10:90 at OL20 were not significantly higher (P> 0.05). The greatest production (59.5 mL g
1
VS fed) was obtained at OL40 for M:SW 30:70.
Hydrogen yield observed in thi