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Table 2 Characterizations of mixed substrates

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

COD (g/l)

52.1 ± 0.06

53.12 ± 0.06

54.78 ± 0.06

55.31 ± 0.06

SCOD (g/l)

4.020 ± 0.08

6.23 ± 0.11

7.12 ± 0.09

8.51 ± 0.21

VS (g/l)

33.12 ± 0.02

34.41 ± 0.82

34.91 ± 0.92

35.33 ± 0.82

VSS (g/l)

30.01 ± 0.06

28.91 ± 0.52

29.45 ± 0.61

30.27 ± 0.4

TS (g/l)

41.25 ± 0.02

42.68 ± 0.55

44.11 ± 0.71

44.72 ± 0.52

TSS (g/l)

36.8 ± 0.06

35.96 ± 0.72

35.21 ± 0.81

34.87 ± 0.83

pH

6.54 ± 0

6.51 ± 0

6.49 ± 0

6.46 ± 0

C/N

10 ± 0.2

13.5 ± 0.3

15.12 ± 0.25

16.33 ± 0.52

Alkalinity (mg CaCO3/l)

3050 ± 25

2651 ± 0.43

2570 ± 56

2450 ± 63