Substrate ratio

Biogas (Nm3/kg VS)

CH4

(Nm3/kg VS)

%CH4

pHstart

pHend

%VS reduction

Varying MP and CP

0:1:0

0.26

0.18b

50.2

7.54

6.01

64.06

1:2:0

0.21

0.10c

51.5

7.29

6.03

63.29

1:1:0

0.38

0.21b

55.1

7.67

6.26

64.95

2:1:0

0.63

0.32a

57.0

7.58

6.38

65.22

1:0:0

0.62

0.28a

50.5

7.34

6.11

66.40

Varying MP and SP

0:0:1

0.29

0.14c

48.8

7.64

5.94

64.37

1:0:2

0.44

0.21b

48.5

7.44

6.01

62.97

1:0:1

0.79

0.38a

52.9

7.23

6.41

61.73

2:0:1

0.79

0.41a

55.7

7.67

6.43

66.81

1:0:0

0.62

0.28b

50.5

7.34

6.11

66.40

Varying CP and SP

0:0:1

0.29

0.14c

48.8

7.64

5.94

64.37

0:1:2

0.68

0.36a

56.9

7.34

6.43

66.65

0:1:1

0.58

0.34a

52.9

7.77

5.86

59.05

0:2:1

0.71

0.39a

57.7

7.09

5.9

59.28

0:1:0

0.26

0.18b

50.2

7.54

6.01

64.06

Varying MP, CP and SP

1:1:1

0.57

0.30a

52.7

7.56

6.39

63.11

1:1:4

0.71

0.32a

54.0

7.83

6.42

61.81

1:4:1

0.31

0.14c

53.8

7.51

5.73

63.27

4:1:1

0.37

0.16b

51.7

7.21

7.97

64.63

SV and SP*

SV

0.29

0.13c

54.5

7.91

7.37

61.75

SP*

0.70

0.32a

53.4

7.48

6.31

67.14