PDF I just now Stumbled upon this posting from a fellow in Europe. Does anyone know what they do with the biomass left over after the methane digester is done with it?
http://conceptpop.com/80000-homes-powered-by-chicken-manure#comment-1387
How about in the US? Are there any large-scale methane digesters here? The American midwest has miles and miles of pig lots and cattle ranches as well as bazillions of chickens. All of these animals spend at least some of their lives crowded into relatively small lots. It should be technically possible / financially feasible to collect their waste and pass it through a digester on its way to a compost pile somewhere. Then it would, preferably, be used locally to enrich the soil that provided the feed for the animals or else bagged for use elsewhere.
Like on MY garden.
