Current Status and Future Prospects of Small-Scale Household Biodigesters in Sub-Saharan Africa

Table 4

Generation of biogas from selected feedstock [28, 31, 65, 101].

Feedstock	Daily production (kg head^-1)	%DM	Biogas yield (m^3 kg DM^-1)	Biogas yield (m^3 head^-1 d^-1)
Pig manure	2	17	0.25–0.5	0.128
Cow manure	8	16	0.2–0.3	0.32
Chicken manure	0.08	25	0.35–0.8	0.01
Human excreta	0.5	20	0.35–0.5	0.04
Food waste	—	34	0.55	—
1 : 1 mixture of cow manure and human excreta	—	18	0.407	—
1 : 1 mixture of food waste and human excreta	—	27	0.489	—
Alfafa	—	14-35	0.43-0.65	—
Rice straw	—	87	0.18	—
Rice straw	—	86	0.014-0.018	—
Bagasse	—		0.165 (m^3/kg organic DM)	—