As
we all know that Biogas typically refers to a gas produced by the breakdown of
organic matter in the absence of oxygen,
"Biogas
is produced by the anaerobic digestion or fermentation of biodegradable
materials such as manure, sewage, municipal waste, green waste, plant material,
and crops, Biogas comprises primarily methane (CH4) and carbon dioxide (CO2)
and may have small amounts of hydrogen sulphide (H2S), moisture and siloxanes.
The
gases methane, hydrogen, and carbon monoxide (CO) can be combusted or oxidized
with oxygen. This energy release allows biogas to be used as a fuel"
True
but this is the definition of Wikipedia not mine....
The
working portion made simple is that by putting all your kitchen wastes and
vegetable wastes (avoiding onion peels, lemon, orange waste, egg shells and
bones in the meat...and other non degradable objects) in the biogas plant
gives you ample energy.
For
the starters we use cow dung (around 20 buckets of them) diluted with water
(cow dung have millions of small bacterias in them), we have to cultivate these
bacteria inside the plant by giving them the waste food, as a result their
excreta which I believe is used for cooking. We have to take care in not
killing the bacteria by avoiding the above said materials.
After
installing your plant you have to wait for 10-15 days to let the gas fill your
tank. After that you can connect it to your stove (Specially designed for the Biogas
plant, provided with it) as the methane gas is heavier than the LPG, and
moreover it’s not in the form of Liquid, so it cannot come out the normal gas
stove. Another good part of this gas is there’s no danger in it if it’s left
open. Only loss is the gas you loose.
After
you start using your gas plant you will get around 15-20 minutes of gas. For that
you have to put around 2 kg of waste and 2 liters of water. (The water you
get after washing your rice or left over water of cleansing fish or meat, the
water we get after the rice is cooked can also be used don’t use plain water
with the waste). In waste you can include leftover vegetables, leftover
food, fish or meat waste etc. continue this for two weeks after two weeks
slowly increase the waste by half a kg say 2 ½ kg of waste and 2 ½ liters of
water. Another two weeks and another increase.
Likewise
you can reach a level of 7 kg’s of waste and 7 liters of waste water, upon
reaching this we can get a minimum of 3 hour of continuous gas.
At
present I am getting 4 hours of gas 1½ hour in the morning, 1½ hours in the
noon and another hour in the night. That’s my experience.
One
thing you have to keep in mind is never increase the waste suddenly. If you
have a party or function in your house or neighbor, you’ll have more waste, I
say you store it another closed plastic container. You can also collect the
extra waste in the container, allow the waste to decay there for a day and then
put the waste, this way of storing-decaying process I have noticed a great
speed in converting the waste into gas.
There
is an outlet from where the remains of waste put in the plant comes out in the
form of slurry. The amount of waste you put in the plant is the same amount of
slurry which comes out, that is another reason why you should not put more
waste suddenly, this way more bacteria goes out and your remaining bacterias will
suffer doing over load of work, which in result will low your production.
This
slurry is a great insecticide and fertilizer.
Dilute
a quantity of slurry thrice and you can spray it on you plants, a good organic
insecticide against pests.
Dilute
it twice to water your crop a great organic fertilizer for you plants.