Supergas: Biogas Brewed From Dung

I visited a hospital in rural Cameroon a few years back that had a fairly large cattle operation (yes, on the hospital campus), and they used a biogas collector there as well. The cattle grazed on the hillsides during the day and their nights in a corral with a concrete pad underneath. In the morning all their dung was washed down into the collector bag, which was quite large, and black so as to absorb more solar heat. The biogas that was collected was used to heat water and sterilize instruments in the hospital. Very ingenious.

"...produce 4 cubic meter of gas". To produce or as storage?

When I was a kid I had a vision of a Jetsons' like scenario where people ride a slidewalk into a plexiglass tube so they could fart, and their methane would be captured.

"Excuse me, I have to go to the Fartitorium."

It cool to see the gaseous product made by cattle can be used for something useful.

fascinating... I wonder how long it takes to fill up one of those balls.