Investigation of Biogas Energy Yield from Local Food Waste and Integration of Biogas Digester and Baking Stove for Injera Preparation: A Case Study in the University of Gondar Student Cafeteria

Table 5

Basic information on the physical properties of the substances [6].

No.	Type	Quantity
1	Density of food waste	1160 kg/m^3
2	Density of human waste	1000 kg/m^3
4	Water content of the human manure	90%
5	Water content of urine	94%
6	Organic content of food waste	85%
7	Energy content of biogas	38 MJ/m^3
8	Gas production rate from human waste	0.078 m^3/kg
9	Gas production rate from food waste	0.05 m^3/kg
10	Retention time from food waste	24 days