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


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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:

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Participated in the
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Participated in the
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Participated in the
Instructables Outdoor Projects Contest

3 People Made This Project!

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220 Discussions

0
i_diala
i_diala

Question 15 hours ago on Step 7

It is a very good demonstration. Thanks.
My question is with the gas holder fitment into the digester. What will prevent escape of gas between the two chambers.
Innocent Nigeria

0
ungaboy47
ungaboy47

Question 3 months ago on Step 7

Sijaelewa hapo inamaana mtungi wagesi unaufunikia kwenye pipa uliloweka kinyesi cha ng'ombe ama inakuwaje hapo

0
DonF66
DonF66

3 months ago

please is there any ratio for mixing the cow dung
secondly what is ment by 5kg-50lets i dont get it clear
is any chemecal involve

0
timadeyi18
timadeyi18

Question 3 months ago on Step 8

This a great idea and project. But pls how much waste digester tank in litres do I need for a continuous supply of gas for a family of 6people

0
MugaruraJ
MugaruraJ

6 months ago

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

1
MugaruraJ
MugaruraJ

6 months ago

Why is there a gap btn the digester tank and agas holder tank. Can't that let the gas escape

1
JahmelB
JahmelB

1 year ago on Step 8

I thought the anaerobic bacteria is only activated when oxygen isn't present. Is it ok for air to enter the system?

0
shagunjain2005
shagunjain2005

Reply 6 months ago

I wanted to ask the same question.... Please respond

0
Kaypharo
Kaypharo

Question 7 months ago on Step 4

The gas holder tank, is it covered on the other end or just insert in into the dung slurry?

1
RUMBUNKIFI
RUMBUNKIFI

Question 10 months ago on Step 6

pls what's the inlet and outlet for and are they covered

0
moseskusena99
moseskusena99

Answer 10 months ago

To allowe oxygen in to speed reaction

0
AnujS67
AnujS67

Reply 8 months ago

But wont the gas run out, if we open it.

0
AnujS67
AnujS67

Question 8 months ago on Step 8

Just saw the entire process, want to understand 2 things
1) what is the inlet and outlet for.
2) why do have to put valve on the top and open it.

0
cowsblike
cowsblike

Question 11 months ago on Step 2

what was the size of this container?

0
sb54
sb54

Question 1 year ago on Introduction

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

1
itsDutt
itsDutt

Question 1 year ago on Step 5

hy can i use kitchen waste + cow dung? is there any ratio about it or not?

0
etruth
etruth

Question 1 year ago on Step 7

i dont really understand what you did here can you please explain clearly

2
PaulM676
PaulM676

1 year ago on Step 7

I like your idea is great for a starter,I will make this one as a proto type,because I am getting off the grid soon I only need to buy an inverter
Thank you. For your idea

Aussie. Paul. 12/10/2018

0
JaiJ14
JaiJ14

Question 1 year ago on Step 3

Why is the puspose of the pipes? Why is the design like that