Methaanproductie van dikke mestfracties: met en zonder voorbehandeling

This report presents the international knowledge about the methane yields of solid manure fractions and the possibilities to increase the methane yields by pre-treatment. The methane yields of solids fractions in batch tests were globally in the range of 40 to 60 m3 per tonne. Promising pre-treatment technologies to increase the methane yield are: thermal treatment, two-stage digestion, steam explosion and thermochemical pre-treatment. Most research of pre-treatment technologies only looked at the increase in methane yield, but not at the increased consumption of electricity and chemicals nor at the economic return.