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Collect enough of the good stuff and you could be on to a winner, by popping it into one of these.
An Anaerobic Digester.
What is Anaerobic Digestion?
Put simply, Anaerobic digestion means using micro organisms, that thrive in an environment starved of oxygen, to
break stuff down.In this case the stuff being broken
down is Pooh.
What’s in it for me?
Methane gas
Free, super rich compost
Lower/no sewerage bills
Preserve natural resources
You Need Pooh(And a lot of it.)
1000lbs of human waste produces about 0.6 cubic meters of methane (BioGas)
Producing enough BioGas (Methane) from a small
household may not be viable as a single resource, but there are many communities, such as in India, the Philippines and Haiti that already use BioGas on a
community level.
Why are other feedstocks important?
The microorganisms that produce methane (BioGas), do so by breaking down acids in Pooh
(very complicated scientific stuff.)
Our Pooh is very acidic because of what we eat and how it is processed.
Introducing things like Barley straw and animal manure, creates a more rich and balanced
environment inside the digester, which means more BioGas.
Simple Bio Digester designs.
A simple design using an inverted water sealed barrel and a tank for collecting
the gas.
A slightly more complex design for the home or small
project.
Community Scaled IdeasBioGas digesters lend themselves extremely
well to large scale community projects, as the feedstock (Pooh etc) can be collected in much
larger volumes.
Totally Tropical PoohMicro organisms responsible for producing BioGas work
well in warm conditions, such as in the tropics.
So, if you are planning a project elsewhere it is worth considering what sort of digester you will use, and how
you will keep it at the ideal temperature.(Ideal conditions exist between 45-55 degrees
centigrade.)
Links and useful resources.
http://large.stanford.edu/courses/2010/ph240/cook2/
http://www.appropedia.org/Biogas_from_human_waste