Build Your Own Biogas Generator

 ...extract from biogas generator

"The apparatus you are going to build uses a discarded 18 litre water container as the “digester.” A mixture of water and animal manure will generate the methane, which you will collect in a plastic balloon. The 18 litre water container performs the same task as the stomach of a livestock animal by providing the warm, wet conditions favored by the bacteria that make the methane."

"Biogas is actually a mixture of gases, usually carbon dioxide and methane. It is produced by a few kinds of microorganisms, usually when air or oxygen is absent. (The absence of oxygen is called “anaerobic conditions.”) Animals that eat a lot of plant material, particularly grazing animals such as cattle, produce large amounts of biogas. The biogas is produced not by the cow or elephant, but by billions of microorganisms living in its digestive system. Biogas also develops in bogs and at the bottom of lakes, where decaying organic matter builds up under wet and anaerobic conditions."

So what is the measure of success?  If your Bunsen burner ignites, your biogas generator is a success!

Build Your Own Biogas Generator, A valuable little publication useful in the home or school.

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