Table 2 An overview of biogas yield data from co-digestions available in literature
From: Alternative energy supply system to a rural village in Ethiopia
Feedstock | Feeding ratio | Biogas yield | Unit | Ref. |
|---|---|---|---|---|
Cow dung (CD) | 100:0 | 0.280 | m3/kg of TS | |
Crop residues (CR) | 100:0 | 0.400 | m3/kg of TS | |
CD alone | 100:0 | 0.233 | m3 CH4 per kg VS | [47] |
CD and CR | 60:40 | 0.268 | m3 CH4 per kg VS | |
CD alone | 100:0 | 0.210 | m3/kg of VS | [48] |
CD, CR, and energy crops (EC) | 50:25:25 | 0.540 | m3/kg of VS | |
CD and corn stover (CS) | 25:75 | 0.356 | m3/kg of VS | |
CD and corn stover (CS) | 50:50 | 0.325 | m3/kg of VS | |
CD alone | 100:0 | 0.230 | m3/kg of VS | [41] |
CD and crop silage (CSi) | 90:10 | 0.465 | m3/kg of VS | |
CD and crop silage (CSi) | 80:20 | 0.477 | m3/kg of VS | |
Human excreta alone | 100:0 | 0.35–0.5 | m3/kg of TS | |
Food waste and human feces | N/A | 0.410 | m3 CH4/kg of VS | [43] |
CD, urine, and water | 50:0:50 | 37 | L/kg of fresh dung | [42] |
CD, urine, and water | 50:35:15 | 48 | L/kg of fresh dung |