Parameter

Hydrolysis/acidogenesis

Methane synthesis

Temperature

25˚C - 35˚C

Mesophilic 32˚C - 42˚C Thermophilic 50˚C - 58˚C

pH value

5.2 - 6.3

6.7 - 7.5

C:N ration

10 - 45

20 - 30

Dry matter content

<40% DM

<30% DM

required C:N:P:S ratio

500:15:5:3

600:15:5:3

Trace elements

No requirements

Essential: Fe, Mn, Zn, Cu, Ni, Co, Mo, Se