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Table 1 Characterizations of the substrates and inoculum

From: Enhancing methane production using anaerobic co-digestion of waste activated sludge with combined fruit waste and cheese whey

Characterizations Waste activated sludge Fruit waste Cheese whey inoculum
TCOD (g/l) 52.10 ± 0.70 32.51 ± 0.71 92.45 ± 0.82 38.21 ± 0.02
SCOD (g/l) 4.02 ± 0.50 12.45 ± 0.30 53.65 ± 0.91 3.550 ± 0.078
VS (g/l) 33.12 ± 0.52 20.52 ± 0.52 70.12 ± 0.81 25.15 ± 0.031
VSS (g/l) 30.01 ± 0.36 11.64 ± 0.12 32.10 ± 0.40 23.11 ± 0.09
TS (g/l) 41.25 ± 0.62 23.12 ± 0.48 84.34 ± 0.79 32.34 ± 0.012
TSS (g/l) 36.8 ± 0.56 14.43 ± 0.21 39.66 ± 0.57 28.45 ± 0.12
pH 6.54 ± 0 5.71 ± 0 5.88 ± 0 7.72 ± 0
C/N 10 ± 0.2 19 ± 0.4 35 ± 0.5 7 ± 0.3
Alkalinity (mg CaCO3/l) 3050 ± 25 1100 ± 25 2550 ± 44 3710 ± 52