Environmental Engineering Reference
In-Depth Information
TABLE 14.3 Properties of typical feedstocks for the anaerobic digestion process (Batstone et al., 2002; Nasir et al., 2012a; Nasir et al., 2012b)
k
h
b
CH
4
c
TDM
ODM
N
COD
Biogas
(g.kg
−1
)
(g.kg
−1
)
(g.kg
−1
)
(g.kg
−1
)
(d
−1
)
( .kg
−1
)
Feedstock
Biodeg (%)
Composition
(%)
Pig manure
200
160
7.0
176
20
CH
2.27
O
0.91
N
0.094
0.05
23
57
MSW
300
240
1.8
264
25
CH
2.08
O
0.97
N
0.016
0.20
48
52
OFMSW
300
270
3.0
297
50
CH
2.10
O
0.96
N
0.024
0.20
106
53
Slaughterhouse
200
180
6.0
260
80
CH
2.59
O
0.74
N
0.065
0.10
118
66
Maize silage
400
360
1.2
396
80
CH
2.05
O
0.97
N
0.007
0.20
231
51
Grass
350
315
1.1
347
60
CH
2.05
O
0.97
N
0.007
0.15
151
52
Sewage sludge
a
50
45
1.2
50
35
CH
2.18
O
0.94
N
0.057
0.07
12
55
Food waste
300
270
2.5
351
75
CH
2.32
O
0.85
N
0.019
0.25
169
58
The reported values have been compiled from a wide range of literature sources and should be considered as indicative, since reported values may vary bya
factor of two at least.
a
A mixture of primary and secondary sludge is assumed.
b
Indicative hydrolysis rate constants reported are for mesophilic digestion; typically, thermophilic rate constants are a factor of two higher.
c
It is assumed that the biodegradable and nonbiodegradable fractions of organic carbon have the same elemental composition.
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