Engineering360: "Killing Two Environmental Problems with One Biogas Digester"

Not exactly lemonade, but there again, no one was handing them lemons.

The nitrogen carbon ratio is the most important aerobacly or not !...temp and duration are key as well ... scrubbing for clean gas a must, CO2 and NOx....as a rural solution on individual bases is ok , in a community setting, consideration of systems engeniring is a must , ...as per ex. the direct mix into the soil...or its dehydration .

It is an interesting concept, maybe urban chickens, grass clippings, and the home generator? I would not want to get any Mexican sunflower started here. I think it already grows in New Mexico (in the USA) also, but maybe I am thinking about a native wild sunflower that resembles the sunflowers in agriculture, but with smaller blooms.

In fact, various sub-species of Mexican Sunflower are a favorite of gardeners, but I wonder how farmers feel about these species once they get out in the fields and perhaps interfere with crops?