Typically 60-65% methane (CH4) and 30-35% carbon dioxide (CO2). The CO2 can also be removed to create renewable natural gas (RNG) which can be injected into natural gas pipelines.
It depends. If a fermentation step is introduced before the digester tank, then ammonia gas can be diverted to an Ammonia recovery unit, and Nitrogen could be recovered at this point. This would leave Phosphorus and Magnesium for recovery from the digester tank(s).
Thanks!
Good video, would anyone know the return on investment for a dairy AD, or information regarding feasibility?
+James Ryan Farmpower in WA State may be able to help you with the payout return timeframes.
The product is methane and carbon dioxide; what are the rates (80/20, 50/50)? What happens with the carbon dioxide?
Thanks
Typically 60-65% methane (CH4) and 30-35% carbon dioxide (CO2). The CO2 can also be removed to create renewable natural gas (RNG) which can be injected into natural gas pipelines.
The CO2 is being wasted !!!!!
Nutrient recovery is done after the metane froduction from biogas or before production???
After the solids leave the digester tank
It depends. If a fermentation step is introduced before the digester tank, then ammonia gas can be diverted to an Ammonia recovery unit, and Nitrogen could be recovered at this point.
This would leave Phosphorus and Magnesium for recovery from the digester tank(s).