Anaerobic digestion of industrial hemp–Effect of harvest time on methane energy yield per hectare
- The highest biomass yield, 16 tonnes dry matter per hectare on an average, and the highest methane energy yield per hectare was achieved when the hemp was harvested in September or October, with an average gross methane energy yield of 136 ± 24 GJ per hectare.
- There was no significant difference in the specific methane yield between the harvest times; the average being 234 ± 35 m3 per tonne volatile solids.
- Biogas from hemp turned out to be a high yielding alternative to the currently dominating renewable transportation fuels produced from crops grown in Sweden: ethanol from wheat and biodiesel from rapeseed.
Anaerobic digestion of industrial hemp–Effect of harvest time on methane energy yield per hectare (PDF Download Available). Available from: http://www.researchgate.net/publication/251628713_Anaerobic_digestion_of_industrial_hempEffect_of_harvest_time_on_methane_energy_yield_per_hectare [accessed Jun 29, 2015].