Hi leobeno,
You'll find detailed instructions on how to build a Biogas generator
(with photos and illustrations), here:
http://www.re-energy.ca/t-i_biomassbuild-2.shtml
You can download the construction plans (in a PDF file), here:
http://www.re-energy.ca/pdf/cp3.pdf
I hope these instructions are clear for you.
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Basics priciples & background info:
Biogas Generator - Basic Principles
http://www.re-energy.ca/t-i_biomassbuild-1.shtml
Background information on Biomass Energy
http://www.re-energy.ca/t-i_biomassenergy.shtml
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Testing your biogas generator after you've built it:
"For the first few weeks, your biogas generator will produce mainly
carbon dioxide. When the aerobic bacteria use up all the oxygen inside
the bottle, the anaerobic bacteria, which make methane, can take over.
It can take up to a month for the generator to start making biogas
with enough methane to be flammable.
When gas begins to accumulate in the balloon, test it by attempting to
light the Bunsen burner:
1. First, open the clamp or valve so that biogas can flow back from
the balloon to the Bunsen burner.
2. Have a friend squeeze the Mylar balloon gently while you attempt to
light the Bunsen burner with a match or spark igniter.
3. If your Bunsen burner ignites, your biogas generator is a success!"
http://www.re-energy.ca/t-i_biomassbuild-1.shtml#test_it
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Sources to obtain water bottles & manure:
"Water bottle: Many hardware and grocery stores now sell purified
water that they bottle on site. They often collect containers that can
no longer be refilled because of dirt or damage to the bottle. These
unrefillable bottles are frequently available for free. Ask to speak
to the clerk in charge of refilling bottles. Ask for a used cap as
well.
Mylar balloons: Check with any local florist or novelty store.
Tubing, valves, T-connectors, barb fittings: Check at your local
hardware or plumbing supply store.
Manure: If you do not know someone who has domesticated rabbits,
sheep, llamas or other similar pellet-producing animals, you can often
purchase sheep or steer manure by the bag at your local garden
center."
(same page - see "Sources")
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Message board - Subject: "Information about obtaining Biogas (Methane)"
Roberto says:
"The easiest way is to have a 20 littre drum and puor down the bottom
what ever you want exchanged into methane (biogas) and pour in with
the mixture some sort of bacteria and water you need to make it into a
slurry at the top of your 20 littre drum have a hose coming out at the
other end of the hose have a container that you would use to contain
your methane then onto of your drum have a wieght and in you hose
somewhere have a tap. the wieght will push down forsing gas to come
out but when you turn the tap off the pressure will build and force
the wieght back up. but if theres to much pressure theres a chance it
will combust."
http://peopleinaction.info/board/1/75.html
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I hope this information enables you construct an effective biogas
generator. If anything is unclear in my answer, please request a
clarification and I will try to assist further.
Best of luck,
jackburton-ga
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