Source Biodegradable N C/N
material [%]
Maramba, Felix: Biogas and Waste A. Animal Dung
Recycling - The Phillipine
Experience; Metro Manila, 1. Hog 2.8 13.7
Phillipines, 1978, p. 43
2. Carabao 1.6 23.1
3. Cow 1.8 19.9
4. Chicken 3.7 9.65
5. Duck 0.8 27.4
6. Pugo 5.0 6.74
Household Wastes
1. Nightsoil 7.1 6.72
2. Kitchen waste 1.9 28.60
C. Crop Residues (air-dry)
1. Corn stalks 1.2 56.6
2. Rice straw 0.7 51.0
3. Corn cobs 1.0 49.9
4. Peanut hulls 1.7 31.0
5. Cogon 1 07 -
6. Bagasse 0.40 -
D. Others
1. Kangkong 4.3 7.8
2. Water lily 2.9 11.4
3. Grass
trimmings 2.5 15.7
Barnett, A. et al.: Biogas Night soil 6 6-10
Technology in the Third World;
Ottawa, Canada, 1978, p. 51 Cow manure 1.7 18
Chicken manure 6.3 7.3
Horse manure 2.3 25
Hay, grass 4 12
Hay, alfalfa 2.8 17
Seaweed 1.9 79
Oat straw 1.1 48
Wheat straw 0.5 150
Bagasse 0.3 150
Sawdust 0.1 200-500
Kaltwasser, Bernd: Biogas; Night soil 6.0 5.9-10
Wiesbaden, FRG, 1980, pp. 35-36
Cow manure 1.7 16.6-25
Pig manure 3.8 6.2-12.5
Chicken droppings 6.3 5-7.1
Horse manure 2.3 25
Sheep manure 3.8 33
Hay 4.0 12.5-25
Lucernes 2.8 16.6
Algae 1.9 100
Oat straw 1.1 50
Wheat straw 0.5 100-125
Cane trash
(bagasse) 0.3 140
Sawdust 0.1 200-500
Cabbage 3.6 12.5
Tomatoes 3.3 12.5
Mustard (runch) 1.5 25
Potato peels 1.5 25
Rice straw 0.6 67
Corn straw 0.8 50
Fallen leaves 1.0 50
Soybean stalks 1.3 33
Peanut shoots 0.6 20
Table B2: Nitrogen-content and C/N-ratio data for a selection of organic substrates, compiled from various sources
Source: Production and Utilization of Biogas in Rural Areas of Industrialized and Developing Countries, Schriftenreihe der gtz, No. 97, pp. 71-72
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