0 a gas containing methane that can be burned as a fuel, produced by dead plants and animals as they decay --
However, at the highest risk level, the enterprise allocations were crop (0.75 ha), dairy (1 unit), fishery (0.25 ha), mushroom (0.72 units), apiary (2 units) and biogas (1 unit).
Biogas fermentation residue was the only soil amendment and the crops planted were alternated every year since 2002.
Animal slurry is anaerobically digested in biogas plants with the purpose of producing energy.
Therefore, only slight variations were expected in the digested slurry and in the two fractions produced by separation immediately after the digested slurry leaves the biogas plant.
Producing and using biogas for traction would require unrealistically large, high-pressure storage facilities on the farm to meet peak season demand.
The fertilizing effect of compost and biogas residues from source separated household waste.
The biogas would then have been passed through a specially developed tubular solid oxide fuel cell that generates electricity directly.
The solid component is used for biogas production.
