Environmental Engineering Reference
In-Depth Information
taBle 32.7
Farm Waste substrates and Biogas yields
vs in
ts (%)
Biogas yield (m
3
/kg
of organic ts)
substrate for Biogas Production
ts (%)
Spent grain
20-26
80-95
0.5-1.1
Yeast
10-18
90-95
0.72
Stomach content of pigs
12-15
80-84
0.3-0.4
Rumen content (untreated)
12-16
85-88
0.3-0.6
Vegetable wastes
5-20
76-90
0.3-0.4
Fresh greens
12-42
90-97
0.4-0.8
Grass cuttings (from lawns)
20-37
86-93
0.7-0.8
Grass silage
21-40
87-93
0.6-0.8
Corn silage
20-40
94-97
0.6-0.7
Straw from cereals
86
89-94
0.2-0.5
Cattle manure (liquid)
6-11
68-85
0.1-0.8
Cattle excreta
25-30
75-85
0.6-0.8
Pig manure (liquid)
2-13
77-85
0.3-0.8
Pig excreta
20-25
75-80
0.2-0.5
Chicken excreta
10-29
67-77
0.3-0.8
Sheep excreta
18-25
80-85
0.3-0.4
Horse excreta
25-30
-
0.4-0.6
Waste milk
8
90-92
0.7
Whey
4-6
80-92
0.5-0.9
taBle 32.8
liquid manure and Biogas yield per lsu
liquid manure [m
3
per animal]
ts
(%)
Biogas yield
(m
3
lsu/day)
lsu
per day
per month
per year
Cattle
Feeder cattle, cow
1
0.05
1.5
18.0
Dairy cow, stock bull, trek ox
1.2
0.055
1.65
19.8
Feeder bull
0.7
0.023
0.69
8.3
7-17
0.56-1.5
Young cattle (1-2 years)
0.6
0.025
0.75
9.0
Calf breeding (up to 1 year)
0.2
0.008
0.24
2.9
Feeder calf
0.3
0.004
0.12
1.4
Pigs
Feeder pigs
0.12
0.0045
0.14
1.62
Sow
0.34
0.0045
0.14
1.62
Young pigs (up to 12 kg)
0.01
0.0005
0.015
0.18
2-13
0.60-1.25
Young pigs (12-20 kg)
0.02
0.001
0.03
0.36
Young pigs (over 20 kg)
0.06
0.003
0.09
1.08
Young pigs (45-60 kg) Young sow (up to 90 kg)
0.16
0.0045
0.14
1.62
Poultry
Young feeder, poultry, young hens (up to 1200 g)
0.0023
0.0001
0.006
0.07
Young feeder, poultry, young hens (up to 800 g)
0.0016
0.0001
0.006
0.07
20-34
3.5-4.0
Lying hen (up to 1600 g)
0.0030
0.0002
0.006
0.07
LSU, Livestock unit (500 kg of live weight)
