Biogas at Home- Cheap and Easy

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Introduction: Biogas at Home- Cheap and Easy

About: Brain of an Engineer, Heart of an Artist. I love the process of making things and it makes me happy!

Hi there, I am Sahas chitlange, aging 14, from India. here is my homemade cheap and easy to build mini Biogas plant. It burns for approx. 20-30 mins on a bunsen burner. you can add anything from your kitchen waste ( Exept Onion peels and eggshells). In 12 hours the Gas is ready for use. It is very easy and cost effective to build (only 2-3 dollars) and gives many useful products.

the end products of this system are:
1) Methane : (Can be used as a fuel)
2) Slurry : (the spent slurry is exellent manure)

The main components oof this system are:

1) Inlet pipe
2) digester tank
3) gas holder tank
4) slurry outlet pipe
5) gas outlet pipe

~

Snapchat and Instagram: @chitlangesahas

I'd love to connect with you guys on Snapchat and Instagram, I document the experience, learning lessons and also answer questions on those platforms. Looking forward to connect! Here is my username for both: @chitlangesahas


Snapcode

Step 1: Chose the Correct Container

You will have to chose a correct size container which will act as a digester tank. My one is liters tank. I got it from scrap.

Step 2: Make Holes

Make holes in the tank for Inlet and outlet. For this I took a old iron rod and heated it to make holes. CAUTION: rod is really very hot.

Step 3: Fix the Inlet and Outlet Pipes

Glue the Inlet pipe and the Outlet pipe with any water proof adhesive. 

Step 4: Making the Gas Holder Tank

I took a paint bucket of 20 lts for making a gas holder tank. this tank holds the gas produced. The tank is overturned and fixed with a valve used for plumbing purposes.

Step 5: Time to Mix the Cow Dung !

mix the cow dung (5kg for 50 liters) and add water to  make a fine slurry. Now put the slurry in the digester tank.

Step 6: Almost Finished!

Put the gas holder tank overturned in the digester tank after adding the slurry . REMEMBER: open the valve while putting the gas holder tank. the mini plant takes 10-15 days for the first time to get output. For the first time, the gas in the tank wont burn as it contains Carbon Dioxide gas, if fortunately it burns then good or wait for the second time. You can detect how much gas is there in this system, the gas holder tank will rises up as the gas is produced.  

Step 7: Working Photos

The photos of the system working are provided....... the heat is so much that it melts a thin sheet of tin in just 2 mins!!!! if you like this i'able please like and comment....

Step 8:

Hydroponics and Indoor Gardening Contest

Participated in the
Hydroponics and Indoor Gardening Contest

Home Remedies Contest

Participated in the
Home Remedies Contest

Build My Lab Contest

Participated in the
Build My Lab Contest

Instructables Outdoor Projects Contest

Participated in the
Instructables Outdoor Projects Contest

3 People Made This Project!

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250 Comments

0
RonaD2
RonaD2

6 weeks ago on Step 5

good day sir. id love to try this but with chicken dung. what do you think is the best ratio of water and chicken dung for it to produce a biogas? thank you so much.

0
josé antonioc3
josé antonioc3

5 years ago

the last picture confuses me, why the paint bucket is "floating". i belive that it must be well atachet and sealed inside the tank. i mean, i believe the tank must be completly sealed, except by inlet pipe, outlet pipe and the vale. if the gas holder thank is floating over the slurry, how much gas it can contain and how much gas scape from digester tank?

Last question, why do you put that bricks over the gas holder tank?

sincerely i hope you can answer. i am very interested in this proyect, but need more information and alternatives to use the cow dung. i live in the middle of the city and can't get it.

thanks for your attention

0
Starlyte
Starlyte

Reply 3 years ago

The top bucket NEEDS to expand/move as it recuperates the gas.

I guess you could find a way to put a rubber seal round its' "path", between the muck bucket and the expansion bucket.

I was thinking about that too. Unless you are lucky enough to find 2 buckets, one that fits upside down in the other PERFECTLY, then I suppose you need a seal. Some one said he built a cage on the top of the gas bucket to stop it taking off, which seems to me a doable idea.

I love this project, it's the final touch for an autonom house!

0
RickH106
RickH106

Reply 4 months ago

the bottom tank is half-filled with water or slouch,, that is the seal /the rims of the upside-down bucket are under the slouch ..
Fill a glass with water,, put inside an empty smaller glass, .. the air won't scape .. the water is your seal ..
The gas will lift the upside-down container ,,,and the weight will supply pressure for a steady flow of gas
This system has a problem
it needs a mechanical moving part inside, to keep the slouch consistently liquid to spill through the outlet.
the heavy particles sit at the bottom. and need to be open and thick slouch removed often

Untitled-design-3-1.png
0
sb54
sb54

Question 2 years ago on Introduction

Hi, very cool system. Are there any cautions on flammability/combustibility? thank you

0
RickH106
RickH106

Answer 4 months ago

went the gas is out it will dissipate .deluted gas won't alight .. you need a very small nozzle for the gas to ignite. No danger of flammability/combustibility
But if you produce gas in a sealed container, with no escape valve .. The pressure will rupture the tank and in large cases will explode, add a flame it will ignite
https://www.youtube.com/watch?v=plLh7xznyWY

0
MugaruraJ
MugaruraJ

1 year ago

How can I apply that idear on my pit latrine and generate power.....which device will convert generated gas into power or electricity..

0
RickH106
RickH106

Reply 4 months ago

You still need to add dung and water for a steady supply of gas

m4_ss5_fig5.13.small.jpg
0
langatp2
langatp2

11 months ago

H, nice project. My question is , what do I use go purify the mathene gas,?

0
RickH106
RickH106

Reply 4 months ago

purify methane gas is an industrial process .. methane gas contains 25% of water vapour In areas of cold nights and warm days .. this vapour will condense into water inside the hose and Block the Hose. The process of purifying is done by freezing the gas. the water will be solid as ice at Minus 10 degrees .. other gases will separate at different temperatures ... Methane must be cooled below its critical temperature of -82.3 °C in order to be liquified under pressure.

0
RickH106
RickH106

Reply 4 months ago

The most cost effective system if you have the space

had made digestor.jpgunnamed (1).jpg
0
osbornphilipe
osbornphilipe

Question 5 months ago

I also noticed you did not put lid on the digester top, can't some gas escape out?

0
RickH106
RickH106

Answer 4 months ago

Lid has tobe on ..and completed sealed .

0
osbornphilipe
osbornphilipe

Question 5 months ago

What's the correct ratio of dung to water when mixing?

0
RickH106
RickH106

Answer 4 months ago

50/50

0
awanh2
awanh2

3 years ago

Hello sir i make a biogas plant of 20 litre but methane gas is not formed.second thing is thai if i do feeding once a time mean if i do feeding today with 1:1 and third thing is that when i do feeding second time PLZ help me i am waiting for your reply thanks alot sir

0
RickH106
RickH106

Reply 4 months ago

You have a leak. if after 7 days you have no gas Check for leaks .. to test,put the end of the hose in a bottle with water .. if you have bubbles is working

0
yadu nathK
yadu nathK

4 years ago

hello sir the digester tank which you are showing in picture is which size? i mean 20 ltr,30ltr or 50 ltr.for it we need cow dunk.but i don't have cow dunk.first time i can manage but i live in city area.every time it is not available so what to do

0
RickH106
RickH106

Reply 4 months ago

That Photo is a 30-gallon drum .. in the City you can use Human waste. water and cornmeal .. or waste from grain processing usually used for animal feed .. But you have to add bacteria from Dung or Human waste to keep it going. ,