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Mini Bio-gas plant using food waste, decomposable organic material and kitchen waste

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I have been searching for some method of using the food waste, decomposable organic material and kitchen waste efficiently, and came across information on producing bio-gas from organic waste.

The bio-gas produced from food waste, decomposable organic material and kitchen waste, consisting of methane and a little amount of carbon di oxide is an alternative fuel for cooking gas (LPG). Also, the waste materials can be disposed off efficiently without any odor or flies and the digested slurry from the bio-gas unit can be used as an organic manure in the garden.

Components of the Bio-gas Plant

The major components of the bio-gas plant are a digester tank, an inlet for feeding the kitchen waste, gas holder tank, an outlet for the digested slurry and the gas delivery system for taking out and utilizing the produced gas.

This project is also useful for students to have a hands-on learning experience in constructing a Mini Bio-Gas Plant, using locally available material.

Material Required:

1. Empty PVC can 50 ltrs capacity: 1 No. (to be used as Digester Tank)
2. Empty PVC can 40 ltrs capacity: 1 no. (to be used as Gas Holder Tank) (Make sure the smaller can fits inside larger one and moves freely)
3. 64 mm dia pvc pipe: about 40 cm long (to be used for feeding waste material)
4. 32 mm dia pvc pipe: about 50 cm long (fixed inside gas holder tank as a guide pipe)
5. 25 mm dia pvc pipe: about 75 cm long (fixed inside the digester tank as a guide pipe)
6. 32 mm dia pvc pipe: about 25 cm long (fixed on digester tank to act as outlet for digested slurry)
7. M-seal or any water-proof adeshive
8. Gas outlet system: Please see Step 4 below for required materials and construction

Tools required

Do not require many tools here. A hack saw blade for cutting the cans & pipes and a sharp knife for cutting holes on the cans are all the tools we need.

Additional accessories

A single burner bio-gas stove or a Bunsen Burner used in school laboratories
 
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sir, can you send me the whole process of gobar gas formation and

the quantity of gas produced in 100 kg of gobar and other wastes

and the list of gas consumers at large scale around gwalior

at neerajmits16@gmail.com

thank you

Neeraj Sharma

knyaksyesterday

hi

can you please send me the details through keithnyaks@gmail.com. I wanna use it for a fuel technology module@my university.

Regards

Sir

can you please send me the details through singh_inderpalkk@yahoo.com. I wanna use it for a science project in my school.

Regards

Inderpal Singh

please go through the files sent to your mail id and come back if you have any doubts

Sir

can you please send me the details through singh_inderpalkk@yahoo.com. I wanna use it for a science project in my school.

Regards

Inderpal Singh

Sir

can you please send me the details through singh_inderpalkk@yahoo.com. I wanna use it for a science project in my school.

Regards

Inderpal Singh

Sir

can you please send me the details through singh_inderpalkk@yahoo.com. I wanna use it for a science project in my school.

Regards

Inderpal Singh

Sir

can you please send me the details through singh_inderpalkk@yahoo.com. I wanna use it for a science project in my school.

Regards

Inderpal Singh

Sir,,

I am really interested in this system, I wish to apply it in my native place, and it can reduce the costs to LPG and will be a good step for families.

Please send me the details to my mail id so that we can plan to implement in our area for whole families. my mail id is sujis1985@gmail.com

antoniraj (author)  sujiths.suresh.73 days ago
Please go through attached files sent to you for more information

may you forward details to me too please? dsdansan092@gmail.com

antoniraj (author)  dsdansan0926 days ago
Please see attached files sent to you for more details

Can you pls forward me the how-to-do to my mail mangala_anand@yahoo.com. Thanks sir in advance.

antoniraj (author)  asundararajan8 days ago
Please see attached files sent to you
JohnsonA9 days ago

Sir, after going through your details of bio-gas plant I have some doubts to clear with you:

1-As the Gas Holder tank is small in dia which goes into the Gas Digester tank, will it not be loosing/escaping the gas produced from the periphery of gap between digester tank and holder tank? (thought-why to lose on even that much gas however minuscule it may be! and thinking why it should be like that, anyway we can control the filling up of the Gas Digester tank to that of half level)

2-Can't we use / make / construct an air tight container tank for Gas Digester and another one separately as Gas Holder tank? If this is possible then kindly send me your idea of constructing it, if possible along with images to my email id: janthony769@gmail.com

3-I find all models of the bio-gas Digester tanks have one in-let and one out-let and on through the out-let most of them (images & videos) have shown only a waterish liquid coming out of this but there is no mention of how the Slurry -the after product- is removed out. Could you please elaborate on this point further?

My email id: janthony769@gmail.com

Thank You.

antoniraj (author)  JohnsonA9 days ago
Hi JohnsonA,

1. Though some gas will escape through the gap between digester tank and gas holder tank, it is very minimal and will not affect the functioning of the system. If you want to trap this escaping gas also, you need to provide a water seal in which the gas holder tank will move up and down. Please refer the pic below on how to provide a water seal:

2. You can construct an air tight container with a fixed dome in which the top portion will act as gas holder and the digested slurry will drained out due to the gas pressure.

3. The liquid thing oozing out of the outlet is the digested slurry. The solid waste is digested by the microorganisms and turn them into tiny bits. The fully digested particles become lighter and rise up to the surface. When you add more waste, the digested particles at the top gets drained out along with water.

Please heck your mail for more details
Water seal.jpg
This is it!
Thank you Sir for being so fast. I really appreciate your write ups and illustrations.

Thank You once again...

yo.rj00710 days ago

I would like to prepare a prototype for my household requirement.

Could you please share me the step by step procedure of this project to my mail id

bboyrexmec11@gmail.com

antoniraj (author)  yo.rj0079 days ago
Please see attached files sent to your mail
antoniraj (author)  antoniraj9 days ago
your mail id seems to be wrong.. please provide a working mail id
Nida Eman10 days ago

Dear Sir,

I am in 11th grade PCMB right now, and i'm really interested in applying this mechanism in my school - DPS Bangalore South. My and a group of my classmates are also making a paper presentation for the Indian Institute Of Science, along with a working model.

Could you please send me further details about this project on my email id : nida.eman19@yahoo.com

It would be great help if you could reply to this as soon as you receive it, because, we're on a time limit......

Thank you.

antoniraj (author)  Nida Eman9 days ago
Please see files sent to your mail id

Hi Sir,

I am very lucky in seeing the article posted by you. i am very much impressed and interested in doing the project.

Could you please share me the step by step procedure of this project to my mail id reddam.ramesh@gmail.com.

Thanking you sir...

antoniraj (author)  ramesh.reddam10 days ago
Please go through the files sent to your mail id
santu138113 days ago

Sir, Thanks for this article. I would like to try this at home. Can you please provide me the details. My id is "100santosh@gmail.com"

Thanks in advance.

antoniraj (author)  santu138112 days ago
Please see files sent to your mail id
MevittaJ13 days ago

Sir, could you please tell me the materials used for gas outlet and how to fix it?

Please reply fast.

antoniraj (author)  MevittaJ12 days ago
You can see in Step 4 items I have used for the gas outlet. The required items are as below:

1. Ball valve : one no ( to adjust the gas flow)
2. 'T' joint : one no ( to connect the gas holder and the ball valve)
3. Cap to block one end of 'T' joint : one no
4. Coupling or Adapter : one no (to connect vertical end of 'T' in to the gas collector)
5. Nipple: one no (added to the coupling in to the gas collector)
6. Gas pipe (flexible) : two meters
7. Barb : one no (fitted with the gas pipe, to join with the Ball valve)
8. Clip : one no (used for crimping the barb with the gas pipe and make it leak-proof)
9. Teflon tape : one roll (used as thread tape in all joints)

You can get them from hardware stores selling LPG related products. If you are a student and want to make for demonstration at school, you can use materials used in drip irrigation system. All of the items other than gas pipe are threaded so there is no problem fixing them. I have used teflon tape over the threads to prevent any leakage. You can use M-seal or Araldite to fix them permanently, but you have to leave the joints to cure for about 24 hours

Hi! I want to make a miniature version of the biogas reactor with a maximum volume of 5 litres. Can you please mail me the required details on swasti.dhagat@gmail.com?

antoniraj (author)  swastidhagat12 days ago
Practically a miniature version with 5 ltrs digester tank is of no use. The gas produced will be negligible. However for demonstration at school, you can make one. Please see attached files sent to your mail for more details
AlvesB17 days ago

Hi...i actually made the project.

However I could not collect any Gas.Should we put waste upto brim or Half or Less than Half?? I put till just below the slurry output pipe.Is it right or wrong?

Please reply fast as i have to submit it by this week!!!

antoniraj (author)  AlvesB17 days ago
you should not feed waste at first. Empty the digester tank and add about half the tank of diluted cow dung slurry. To speed up the process add little bit of country made jaggery. you will get gas within two days. Now you got the microorganisms from the cow dung, you can start adding kitchen waste. But getting gas from waste will take time
aronaldo219 days ago

Hi sir,

I am school student.I am very interested in these thing.So shall i know what is the efficency

antoniraj (author)  aronaldo217 days ago
Hi,

What I have posted here is a working prototype. with a 50 litr capacity digester tank you can add only 200 to 250 grams of food waste per day, which will produce about 50 to 60 grams of biogas.

Good work.... request for more details and material for use . Please mail to gaganbajaj39@gmail.com

antoniraj (author)  bajaj.saab.3717 days ago
Please see attached files sent to your mail for more information
Chackomath21 days ago

Would you plz send the details to my id chackobiji@gmail.com

antoniraj (author)  Chackomath21 days ago
Please see files sent to your mail
Chackomath21 days ago

please send me the details of it to my email id chackobiji@gmail.com

Thank you sir.

Respected sir

My self Nitesh Kumar ,i have a dairy so i want to setup a bio gas plant ,at my home in bhagalpur bihar ,what is the cost of bio gas project ,i have 80 buffaloes , my email id is nitesh_kumaryadav@yahoo.co.in,so sir plz help me

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