Biogas Digester Turns Manure Into Cooking Gas!

This simple biogas digester at ECHO can create cooking gas from cow manure. A family of four can cook for months on the gas from just one drum of manure sludge. Methane is created by the anaerobic composting of manure by methane-producing bacteria. Harnessing this process replaces the need for firewood. Great appropriate technology for the developing world. The biogas pressure tank is simply an inverted drum in a barrel of water, held in place with an innertube strap that provides pressure as the gas rises. Amazingly simply but highly engineered.

Видео Biogas Digester Turns Manure Into Cooking Gas! канала David The Good