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Nitrogen-content and C/N-ratio of Organic Substrates
| Source | Biodegradable material | N [%] |
C/N |
|---|---|---|---|
| Maramba, Felix: Biogas and Waste Recycling - The Phillipine Experience; Metro Manila, Phillipines, 1978, p. 43 | A. Animal Dung | ||
| 1. Hog | 2.8 | 13.7 | |
| 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 Technology in the Third World; Ottawa, Canada, 1978, p. 51 | Night soil | 6 | 6-10 |
| 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; Wiesbaden, FRG, 1980, pp. 35-36 | Night soil | 6.0 | 5.9-10 |
| 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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