From: Enhancing methane production using anaerobic co-digestion of waste activated sludge with combined fruit waste and cheese whey
Waste activated sludge: mixed fruit and cheese whey (%)
100/0
95/5
90/10
85/15
Protease (mm)
21.0 ± 0.3
23.5 ±0.7
24.6 ± 0.6
25.6 ± 0.8
Cellulase (mm)
26.5 ± 0.4
27.5 ± 0.6
28.1 ± 0.4
29.3 ± 0.8