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Procedure:
A. Storage system
1. Cut a 20cm piece of copper tubing.
2. Sanded the sharp edges of cut tubing.
3. Pushed tubing into neck of balloon passed sleeve inside balloon leaving
some tubing outside.
4. Tested tube to make sure air could easily move in and out by blowing
air in and squeezing it out.
5. Taped the neck of the balloon securely so air could not escape from
anywhere but the tube.
6. Attached vinyl tubing to the copper tubing and secured with tape.
7. On other end of tubing attached a needle valve and secured them with
sealant tape and made sure it was tight.
8. Attached tubing to other side of needle valve, tightened and secured
it with sealant tape.
9. On other end of tubing attached a T-connecter and secured it with
sealant tape.
10. On other opening of T-connector attached tubing, tightened and secured
it with sealant tape.
11. At the end of the tubing attached a needle valve, tightened and
secured it with sealant tape.
12. Attached tubing to the end of that needle valve.
13. Drilled hole in cork with ¼” bit.
14. Secured the tubing into the cork.
15. On the final opening of the T-connecter assembled earlier attached
tubing and secured with sealant tape.
16. On the end of the tubing attached a needle valve, this valve is
where the methane is burned.
B. Bio-gas generator
1. Removed cap on 18L water bottle.
2. Used funnel to fill 10 liters of manure after mixing with some water.
(fig 7-1)
Image of mixing manure with water.
3. Filled 6 liters of water (this left 2 liters in order to allow the
mixture to expand when it gets hot and from the air that is produced)
and stirred the mixture with a doweling.
4. Put cap back on and secured to make sure there were no holes along
the sides.
5. Made a hole in the middle of cap so the methane could pass through.
6. Pushed cork into hole of the cap.
7. Made sure all valves are open expect the end valve where the methane
is burned.
8. Wrapped the container in a black garbage bag (to stop the growth
of algae when exposed to the sun).
(fig 7-2) This shows
the setup of the digester after its completion. In the picture on the
right (taken a couple of weeks after building the apparatus) you can
notice how the bottom looks like its all smooth and has no bubbles while
the portion at the top you can see it has bubbles. The reason for this
is because after a certain point of time the bacteria die and once this
happens they form the "sludge" at the bottom. Once this happens
the container can no longer produce gas because the bacteria has died
the "sludge" can be used as fertilizer.
(fig 7-3) Apparatus
setup.
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