ANAEROBIC DIGESTION OF GRASS PHYTOMASS IN MODEL BIOFERMENTERS
MUNOZ, J. O., VANA, J., HAVRLAND, B.
Abstract
In the realized experiment in double 50 I anaerobic
fermenters yield and composition of biogas from fresh grass phytomass and from
grass hay was detected in both cases at cofermentation with pig sewage. It was
inquested, that at compliance of coincident procedural conditions in both fermenters
was for 1 Kg. of dry matter charge won 163 - 164 I of biogass and 80,26 - 62,76
I of methane with slight differences between fresh grass phytomass and grass
hay. On 1 kg. of non-combustible substances for charge there was a slightly
higher production in grass hay 211,1 I of biogas in comparison with 208,7 I
on fresh grass.
The experiment proved the convenience of grass haying for anaerobic digestion
in winter season and the convenience of substrate cofermentation realized on
base of grass phytomass with pig sewage.
Key words:
anaerobic digestion, methanogenic fermentation, grass biogasification, grass
hay, biogas, methane.