There is some research suggesting that separating swine manure into solids and liquids can slightly reduce greenhouse gas (GHG) emissions emitted from the manure itself. It is not likely to be significant enough for separation to be a viable strategy by itself.
The primary reason to use solid-liquid manure separation is to prepare manure for further treatment in a system that can:
- generate energy (such as anaerobic digestion, thermal technologies, etc.)