Evaluating the Potential of Domestic Animal Manure for Biogas Production in Ethiopia

Table 3

Range of pH in animal manure digesters.

Days	pH range
	Cow dung	Sheep manure	Pig manure
1–5	6.88	6.00	7.00
6–10	6.00	6.50	6.80
11–15	5.40	5.80	4.90
16–20	5.10	5.50	5.10