What material can I use to feed a biodigester?
In theory, any organic material can be decomposed anaerobically to produce biogas, but some materials work better than others. In general, materials need to be rich in energy and easily digestible. Manure works very well, coming from cows, pigs, or horses. Biodigesters can be fashioned from septic tanks, but the waste production is often not enough to produce enough biogas, and cleaning agents (bleach etc.) kill the anaerobic bacteria necessary for digestion. Plant material can be used, but acidic matter should be avoided, for they disturb the anaerobic processes. Plant matter is also often low-energy and slow to digest, creating a number of difficulties for digesters relying solely on such material.
