I am not sure if you know the person in the video but he forgot to mention something very obvious but not to those who are not familiar with methane digesters: the wide inlet pipe at the top must be long enough to go down inside the tank all the way to about 3/4s of the depth so that every time you remove cap to add more manure mix (digester food) the gas does not escape :) It is also very helpful to have a plunger-like mechanism to use inside the pipe to push the new undigested manure to ''stir'' the contents to help impeove the digestion process. There is a Danish dual tank digester design where the pressure built up in the lower tank is periodically released (through a pressure regulator valve mechanism) causing the liquid content that had been pushed up in the higher tank to suddenly drain back into the lower tank thereby stirring the contents. They reported a rise in as production by 20-25% as a result of this "stirring" action. Cheers.
Good day, I'm a start of, I need a more thorough understanding, step by step explanation of this, for dummies probably Please if you can help me ASAP I will appreciate this
@@chinonyeokoro2647 I am pretty sure I answered your question a few days ago, but it seems YT has deleted it!! Maybe because it contained links to other videos on YT???
@@UPGardenr Hi, same problem as the reply I wrote to the chap below, YT has deleted it maybe because it contained a link to the Danish website of superflex and supergas???
I was worried he was going to start talking about the different kinds of manure he has and skip over all the details of the digester, but he didn't! +1 Liked the fire arrester as well.
But the government won't let people use their brains because it's hard to tax dreams. Imagine phoning a council in England and saying I'm gonna run my home off cow farts, they would be round like a shot with a clipboard.
Brilliant effort. I will start educating my village people in the bio gas field. Am based in Zambia . this really does work as I have experimented on a very small scale. Thankyou.
Be great to see a long term update on this video. Noticed the internal rails to stabilise the inner vessel, a weight on top of the inner vessel would create a small amount of extra pressure for the flame at the burner..... Great video
I just started looking up biofuels made at home and came across this video. This is awesome! And the cleanliness of the design is something I'm probably going to try myself.
I think the concept is awesome, as long as you know what you are doing! I have read in articles, that it is important to know safety protocols, as these gases are toxic and some people have accidentally harmed themselves without a full understanding of safety issues.
Europe definitely needs to start getting into these methods to heat their homes this coming 2022 winter with the Russia Ukraine war not showing signs of ceasefire. #Europeans start investing in nature. Time to get your hands dirty and build natural biogas digesters. Alll the best and thank you for sharing a detailed video Sir
This is the best biodigester video I found. A lot of other videos are sketchy, and you don't want to have a leaky system as Methane has more than 25x more global warming effect than CO2.
Now all you need to do is train the livestock to relieve themselves in a pen with a grate that feeds into the tank and you'll basically have it feed itself everyday. Seriously, great video. I needed the visuals to understand the concept. Beautiful explanation.
Really good and clear setup, and I am sure they will have a water bore hole and solar/wind and solar not just for electricity but to heat water also, possibly ground heat pumps. Pure free sustainable energy.
Love the tank in water for indicating how much gas is in there. Brilliant. I'm just blown away with this whole set up. Why aren't people building gas collecting plants over refuse tip vents, instead of it just getting released into the atmosphere and wasting a valuable resource?
In the developed parts of the world it’s common practice to install gas collection systems in landfill which suck the biogas out of the site for fuel for electrical generation. Several megawatts of power are often generated for 10 to 20 years after the sites are closed. In lesser developed parts of the world the gas vents to atmosphere. 🙁
The concept is intriguing to me as I'm asking question how to adapt wastewater biosphere to colder climate? I'm also amused his partner chimed in on safety. She actually raises a valid point. As a Yank born Filipino, I'm impressed by the ingenuity of my animal farming cousins. Fascinating video. Magaling ng video mo.
Wonderful concept, THIS is the answer to a lot of energy needs! I first saw it in Mad Max, Beyond Thunderdome, I'm very interested in building something like this but there's an issue with the cat litter that will no doubt get in too as the cat-box is the best source of animal waste for me right now.
Is there a follow up video? Things that have changed, lessons, discoveries, improvements etc? Has the safety mechanism been tested yet? We would love to see a video of that experiment as well. Amazing work friends, this is a mechanism that can change society fundamentally! Sending love from Vancouver Island
Well covered, this is really a good way to turn that greenhouse waste into a little btt of CO2 and Water. Permaculture principles met: Obtain a yield, and Produce no waste! Thanks for sharing
I have been researching through the 'Net is recent days for any information I can get on my new interest which happen to be production of biogas. I find this video quite educative and even the discuss that follows it. I will keep in touch. I hope to start building mine pretty soon. I will surely come back for some help. Benjamin (Port Harcourt, Nigeria)
Aye this is one of the best introductions to a practical home digester I have seen. Wonderful presentation, would love to have some updates if possible :)
I love your video; it has taught me a lot. Good explanation. I think you should always light your match before opening the gas for safety. Very nice video.
Brilliant set up I really like your scrubber and flash back arrester And floating storage Very safe very neat Great knowledge Well done brother Thanks for sharing
Very detailed, other biogas digesters do not have all this measures in place. would like to have the manual for this and more videos as well for cleaner energy.
Congratulations sir, this is by far the best video that I have seen, I have few questions 1. After how much time do we need to replace this Steel wool & water which removes CO2? or how do we know that it's time to change them? 2. How much steel wool do we need if put 100kg waste per day? 3. Can I use copper wool instead of steel wool? 4. can we use bleach in water that removes CO2?
I suggest that 26 years ago to a Hutterite colony that had a fairly large hog operation. they had a large concrete tank for holding the effulant to 'digest' before being trucked as fertilizer to the fields. The tank was 50 feet across and open topped - I suggested they close the top and collect the methane, filter etc and compress to large pressure vessels, that they could draw from for cooking and heating during the long Canadian winters. Didn't do it.
So, to make ~30L to ~35L of methane per day, how much (average kg per day) organic matter do you have to add daily to your digester to get a steady 30L to 35L output of methane? Do you ever have to add in any more manure or does it continue to work as long as you keep the microbes fed? If yes, how much & how often?
It is an ongoing process. Keep the tank filled up for best result. There are other videos on how bio digester works on inside. 👍🏼 thanks for posting this content. Really love the ways that don’t utilize mains gas or electricity. Taking polution done by large corp to feed us energy, down to nothing if we do it ourselves. Creating energy from natures wheel of life. ❤
Nice. We've known about this for decades, but guess what industries have fought this tech the most? Oil. Petroleum. Power. Automobile. Gas. Because they will not allow competition despite it being a MUCH greener gas.
This is what most of the landfill sites run their generator from. They capture the gas from the decomposing matter, capture the gas for the generator and then power the sites needs partially or fully this way
As others have said, this is the best practical methane digester application video on RUclips. For a research project, if you really want to know how it works, look up L. John Fry's book on the journey to forever website! Mike
Great set-up and one I may "borrow" in future. I would say for those interesting in building similar, that it is quite unusual for one to work so well above ground... and by unusual, I mean he lives somewhere hot. Those in more northern latitudes need to consider how to keep the digester not just warm, but at a constant temperature. Ideally around 35 degrees.
Thats a great design, if you don't mine I have some suggestions. 1 please paint your digester black, 2 please stop adding cow dunk from now on please add house wast. you will get 10 time greater methane. Add 1 kg sugar every month.
+Kalpesh B Thanks so much for the excellent practical suggestions. Your suggestions, if I understand correctly are about temperature and feed mix. These suggestions and questions have been raised by a few folk on earlier posts so I have copied some earlier responses here: The anaerobic decomposition seems to be very temperature dependent. I have since added a heat exchange to the digester using 15mm black plastic water pipes and circulating warm water around the digestor in a closed system. The pipes return the ‘cooled’ water to the house roof so it can be ‘reheated by solar radiation’. There is a small plastic reservoir at the high point in the system to allow for any expansion in the water. The pipes around the digester are insulated with old blankets and strong plastic sheets taken from advertising banners. To pump the water there is a small 12volt circulation pump connected directly to a 10watt solar voltaic panel. It seems to work quite well - not sure how long it will last. I have also covered the pipes on the roof with 2litre coke bottle to create a long chain of interlocking mini hot-houses just to give the heat absorption some help! Photos won't copy to this post, so I've shared them on Google+, hope you can see them. I have read that it is ‘best’ to have a mix of organic feed. The reason for this is complex and interesting. From what I understand it has to do with the process of decomposition giving rise to various populations of different bacteria feeding and growing and producing ‘feed’ for other populations of bacteria. There are said to be four main processes during the decomposition: hydrolysis, acidogenesis, acetogenesis, and methanogenesis, and these four steps are associated with particular bacteria. Most methane is produced during the final step: methanogenesis. Once again from what I understand a good mix of organic feed at the beginning would allow the populations for each step to flourish because there would not be a limit on their particular feed. Here is a representation of a graphic from the excellent Biogas Handbook which can be found at : www.lemvigbiogas.com/BiogasHandbook.pdf Chapter 3 supports your suggestion best. Also find a useful diagram here: elderslie.wix.com/elderslie#!biogas-cooking/c229f It seems cow dung has a relatively low methane yield on its own so it would be best to begin introducing a feed mix from kitchen scraps and some food waste together with the cow dung, in this way fats and proteins would also be part of the initial feed mix. Another reference form Mike Reynolds (see comments) is an oldie but a goodie: journeytoforever.org/biofuel_library/MethaneDigesters/MD1.html#synergy
+Shau 78 HI I am not actually. Its faster to grow bacteria in house waste rather than cow dunk, because of the sugar content. but you should always start with cow dung as it good for beginning process. all scientific bio digester or CNg producers using the same methods. I like his design it's the most accurate video on web.
I would have liked to see you do things while explaining. (IE. Filling the digester with "Fuel", emptying out liquid from the barrel kind of thing) Neat video
Hi Wayne. Great video - Thanks. If you were to redo it from scratch, what would you change if anything? Would you make a larger one to get more methane out per day?
I have found this nice information on domestic biogas which is really helpful. Though i have read most the posts and replies below i would like to know the tentative dimensions (distances) of inlet pipe location inside the digester, exact desired location (elevation) of outlet pipe, max liquid level in digester ( or the distance left for the gas accumulation inside digester. I guess those will affect a lot with production. Also would like to know if we need to drain out all the matter from the digester at some point of time in future. For how much time we can go by adding new material on daily basis?
Thank you that was really awesome I was just got through speaking of methane gas today I love it when I observed things that I was trying to discover more of myself
One of the best and most comprehensive videos. I am into hydroponic farming, and want to use the CO2 in a controlled enclosed environment during the day. How can I extract CO2 gas from the water?
Wonderful video , how did you do the water float and Co2 filtration part ? the design mechanism ... Also , for the slurry delivery , the pipe delivers it to the bottom of the tank right ?
I have three questions Sir, 1 Don't you need to insulate your digester? 2 Don't you need to have some means to stir the digester? 3 Do you have some means of removing accumulated solids from the bottom of the digester? Great idea using compacted steel wool as a scrubber and firestop.
That's the cleanest methane flame I've ever seen from a biodigester. How often do you need to change the steel wool? Also, do you think there's a practical way to store the gas in fairly large quantities?
Dear Wayne, I asked myself the same question and wonder if that could be possible to do the filter of some kind of clear plastic (or even glass) material in order to visualize the reaction between the Fe and the H2S. This could be a good parameter to decide when to change the wool. What do you think?
I've installed systems that don't have a scrubber, and the flame is a little less blue, so I think something in your cleaning process is working. Does the gas have an odour? Water vapour( and amonnia) is present in the gas produced. Some water may be removed by oxidation of the steel wool, but water vapour would be reintroduced in your water trap. Despite this, do you think the steel wool might last longer if the scrubber was installed after the water trap? Do you get water blockages in the pipes run along the floor? Many more questions!
Everything I wanted to know about biodigester I learned on this vídeo..... O Melhor Biodigestor ( TOP BIODIGESTER ) PARTE 1 & 2...with subtitles in english.
Great video, very neat system and very clear explanation. Could you increase the pressure by placing some extra weight on top of the container in the water container?
I'm not sure on the amount of time but it handles higher temperature that steel wool and doesn't break down as fast, the sulphite might not get taken out as I think but not sure that it is filtered by iron oxide which isn't in bronze but you could always rust up some steel wool and filter it through before you get to the arrestor l, also a good addition is a pressure release ball valve, it's just a spring holding a ball, like out of an old mouse, to a hole on your water flashback chamber so if it does ever get back that far the system won't just implode on itself it will pull the ball down and release the pressure then spring back and reseal
i have seen one guy doing this in my area, he collects the editble waste of everyone in his street to feed his biogas plant for his needs and i also thought it was such a great idea to get waste turned to gas but reality is that its easier said than done and i gave a like to this video so bye now
Very nice setup .-well done . A question or two - what can you power on 35 L's of methane ? how many liters of water could you boil on 35 L? - Could you power a hot water unit? thx
very good video. I am planning to make a bio digester my self,can you please tell me why was it important to have the storage tank floating in water. why can we just use a pressure Guage?
I am not sure if you know the person in the video but he forgot to mention something very obvious but not to those who are not familiar with methane digesters: the wide inlet pipe at the top must be long enough to go down inside the tank all the way to about 3/4s of the depth so that every time you remove cap to add more manure mix (digester food) the gas does not escape :)
It is also very helpful to have a plunger-like mechanism to use inside the pipe to push the new undigested manure to ''stir'' the contents to help impeove the digestion process. There is a Danish dual tank digester design where the pressure built up in the lower tank is periodically released (through a pressure regulator valve mechanism) causing the liquid content that had been pushed up in the higher tank to suddenly drain back into the lower tank thereby stirring the contents. They reported a rise in as production by 20-25% as a result of this "stirring" action. Cheers.
Do you have a web site for the Danish system
Good day,
I'm a start of, I need a more thorough understanding, step by step explanation of this, for dummies probably
Please if you can help me ASAP I will appreciate this
@@chinonyeokoro2647 I am pretty sure I answered your question a few days ago, but it seems YT has deleted it!! Maybe because it contained links to other videos on YT???
@@UPGardenr Hi, same problem as the reply I wrote to the chap below, YT has deleted it maybe because it contained a link to the Danish website of superflex and supergas???
This is one of the better uploads on Biodigesters I've seen. No crap background music and human narration!
Love the no music
Well.presented, clear, concise, to the point. Useful. Thank you.
Had just enough personalization to be personal, too, without the "Let me spend 45 minutes telling you Way TMI!"
there's definitely crap tho
I was worried he was going to start talking about the different kinds of manure he has and skip over all the details of the digester, but he didn't! +1 Liked the fire arrester as well.
The mind is definitely a terrible thing to waste. Nature gives us literally everything.Amazing stuff sir.
A waist is also a terrible thing to mind
J
But the government won't let people use their brains because it's hard to tax dreams. Imagine phoning a council in England and saying I'm gonna run my home off cow farts, they would be round like a shot with a clipboard.
Great setup! Nice to see someone doing it properly removing the unwanted byproducts before burning.
Brilliant effort. I will start educating my village people in the bio gas field. Am based in Zambia . this really does work as I have experimented on a very small scale. Thankyou.
We dont have a lack of resources. We have a lack of innovators.
We? Who is "we"?
No we have a govt. That makes innovation and independence illegal in the u.s..
@@AlexeySherstnevmust not be talking about us we lol bcuz I built an HHO generator for my truck works great lol.
How long before this is either made illegal or heavily carbon taxed.
Be great to see a long term update on this video. Noticed the internal rails to stabilise the inner vessel, a weight on top of the inner vessel would create a small amount of extra pressure for the flame at the burner.....
Great video
Hello there: Absolute clarity in explaining the concepts. Thanks to the team involved. :)
Finally somebody put it all together and showed all the parts and what goes where. Good vid. Thank you for posting it.
I just started looking up biofuels made at home and came across this video. This is awesome! And the cleanliness of the design is something I'm probably going to try myself.
Thank you very much for alternate sources of cooking.
The best description of a methane generator I've seen online so far. 5 Stars from me!
I think the concept is awesome, as long as you know what you are doing! I have read in articles, that it is important to know safety protocols, as these gases are toxic and some people have accidentally harmed themselves without a full understanding of safety issues.
Europe definitely needs to start getting into these methods to heat their homes this coming 2022 winter with the Russia Ukraine war not showing signs of ceasefire. #Europeans start investing in nature. Time to get your hands dirty and build natural biogas digesters. Alll the best and thank you for sharing a detailed video Sir
This is the best biodigester video I found. A lot of other videos are sketchy, and you don't want to have a leaky system as Methane has more than 25x more global warming effect than CO2.
This is the best tutorial I have seen on a biodigester. Great set up too ! Thanks for posting
One of the most well done setup!!! Especially closed floating drum! Clean and sanitary. Thank you so much for showing!
What's the purpose on the floating drum,I couldn't understand
@@Daffodil956 Just a way to store methane gas and raises when full sinks when empty
Best video on home biogas set up, very informative and to the point. Thanks for uploading
Now all you need to do is train the livestock to relieve themselves in a pen with a grate that feeds into the tank and you'll basically have it feed itself everyday. Seriously, great video. I needed the visuals to understand the concept. Beautiful explanation.
🙌🏼🙌🏼🙌🏼 I’ve been hunting for the best Biodigester explainer video, this one tops the list! Thx brother for sharing this innovation!
Just a quick thank you for sharing your idea in this very explicit post. Thank you !
Interesting lesson .... another way to work towards removing dependence on the grid. Thanks for sharing. Maureen
Really good and clear setup, and I am sure they will have a water bore hole and solar/wind and solar not just for electricity but to heat water also, possibly ground heat pumps. Pure free sustainable energy.
This is one of the more refined videos that I have seen. Thank you for the same.
Please keep posting.
Neat and clean biodigester and simply explained . Thanks
Brilliant! You really have simplified the process that makes it understood by anyone.
Very clear and omprehensive information explained in a simple professional and scientific way. Thank you indeed.
Love the tank in water for indicating how much gas is in there. Brilliant. I'm just blown away with this whole set up. Why aren't people building gas collecting plants over refuse tip vents, instead of it just getting released into the atmosphere and wasting a valuable resource?
In the developed parts of the world it’s common practice to install gas collection systems in landfill which suck the biogas out of the site for fuel for electrical generation. Several megawatts of power are often generated for 10 to 20 years after the sites are closed. In lesser developed parts of the world the gas vents to atmosphere. 🙁
Congratulations Sir! Thanks for showing The World your wonderful set up! Regards.
If it was possible I was gonna give this video extra like. This is well explained 10/10
Very very great video, seven years later! Well done and thank you!
The concept is intriguing to me as I'm asking question how to adapt wastewater biosphere to colder climate?
I'm also amused his partner chimed in on safety. She actually raises a valid point.
As a Yank born Filipino, I'm impressed by the ingenuity of my animal farming cousins. Fascinating video. Magaling ng video mo.
Wonderful concept, THIS is the answer to a lot of energy needs! I first saw it in Mad Max, Beyond Thunderdome, I'm very interested in building something like this but there's an issue with the cat litter that will no doubt get in too as the cat-box is the best source of animal waste for me right now.
Cat waste doesn't produce methane. Cow dung, rabbit poop, etc does.. cow dung is the best choice though
Great lesson. This can save us a lot of money. Thanks for posting.
I bet the Gas and Electric companies hate these types of educational videos. lol (Like) 👍
Is there a follow up video? Things that have changed, lessons, discoveries, improvements etc? Has the safety mechanism been tested yet? We would love to see a video of that experiment as well.
Amazing work friends, this is a mechanism that can change society fundamentally!
Sending love from Vancouver Island
From Kenya bungoma county l have bio gas plant but l don't where get the stove
Great concept. I would like to see some follow up videos of latest experiments.
Congratulions guy !! This video was the best i´ve found. Thank u for share
this is one of the cleanest biogas plant i have ever seen
Well covered, this is really a good way to turn that greenhouse waste into a little btt of CO2 and Water. Permaculture principles met: Obtain a yield, and Produce no waste!
Thanks for sharing
I have been researching through the 'Net is recent days for any information I can get on my new interest which happen to be production of biogas. I find this video quite educative and even the discuss that follows it. I will keep in touch. I hope to start building mine pretty soon. I will surely come back for some help. Benjamin (Port Harcourt, Nigeria)
Hi Ben, what's your progress with the biogas digester?
Would you like to share updates?
Loves These biogas videos. I create my own biogas right at home a small biogas i built very cheap. i actual run a two small motors with the biogas .
Can you please tell me how much of your energy is provided by your biodigester biofuel?
Aye this is one of the best introductions to a practical home digester I have seen. Wonderful presentation, would love to have some updates if possible :)
An update was provided in the comments search for the word update
I love your video; it has taught me a lot. Good explanation.
I think you should always light your match before opening the gas for safety. Very nice video.
Brilliant set up
I really like your scrubber and flash back arrester
And floating storage
Very safe very neat
Great knowledge
Well done brother
Thanks for sharing
Thanks to RUclips for keeping it this long for me to see it in Tanzania after yrs...bravo to ALL God Bless Your Efforts
Thank u in advance for the unique tutorial video I hv ever seen. these shows how good a u in organic chemistry.
Very detailed, other biogas digesters do not have all this measures in place. would like to have the manual for this and more videos as well for cleaner energy.
This video is more applicable more now than ever.
Thank you, it was a very detailed description and well designed system. The best I have seen so far. Thanks again!
Can u help me answer some questions??
Congratulations sir, this is by far the best video that I have seen, I have few questions
1. After how much time do we need to replace this Steel wool & water which removes CO2? or how do we know that it's time to change them?
2. How much steel wool do we need if put 100kg waste per day?
3. Can I use copper wool instead of steel wool?
4. can we use bleach in water that removes CO2?
I suggest that 26 years ago to a Hutterite colony that had a fairly large hog operation. they had a large concrete tank for holding the effulant to 'digest' before being trucked as fertilizer to the fields. The tank was 50 feet across and open topped - I suggested they close the top and collect the methane, filter etc and compress to large pressure vessels, that they could draw from for cooking and heating during the long Canadian winters. Didn't do it.
Good job. You made it simple and all steps taken are technically correct.Best video and best description
I love this system and I cannot wait to build the exact same setup . South Africans really know how to do off grid projects.
So, to make ~30L to ~35L of methane per day, how much (average kg per day) organic matter do you have to add daily to your digester to get a steady 30L to 35L output of methane? Do you ever have to add in any more manure or does it continue to work as long as you keep the microbes fed? If yes, how much & how often?
It depends on the type of organic matter you use
It is an ongoing process. Keep the tank filled up for best result. There are other videos on how bio digester works on inside. 👍🏼 thanks for posting this content. Really love the ways that don’t utilize mains gas or electricity. Taking polution done by large corp to feed us energy, down to nothing if we do it ourselves. Creating energy from natures wheel of life. ❤
Your inputs have to be equal to outputs.
@@cofferooster998cow manure. This was specified in the video, OP's just commenting on the logistics.
Only need manure first time yes
Fantastic! Just so wonderful. Thanks for the video
heres my like for being south African :P,
This by far the best I've seen to date
Nice. We've known about this for decades, but guess what industries have fought this tech the most? Oil. Petroleum. Power. Automobile. Gas. Because they will not allow competition despite it being a MUCH greener gas.
This is what most of the landfill sites run their generator from. They capture the gas from the decomposing matter, capture the gas for the generator and then power the sites needs partially or fully this way
As others have said, this is the best practical methane digester application video on RUclips. For a research project, if you really want to know how it works, look up L. John Fry's book on the journey to forever website!
Mike
@Wayne Peddie thats a great project, can you reach me at juniorkeresepe@gmail.com i have a few questions for you
Thank you for the video. Very simple and informative. Interesting info regarding the steel wool in the two processes it's used in.
Very cool and educating :)
Waiting for more videos like this
I knew this man plays football from the beginning of the video, I was proven right at 1:50
After football he kicks the pipe, not the bucket.
I went back to the vid to check! Spot on!!
Great set-up and one I may "borrow" in future. I would say for those interesting in building similar, that it is quite unusual for one to work so well above ground... and by unusual, I mean he lives somewhere hot.
Those in more northern latitudes need to consider how to keep the digester not just warm, but at a constant temperature. Ideally around 35 degrees.
Must be from Zimbabwe
Thats a great design, if you don't mine I have some suggestions. 1 please paint your digester black, 2 please stop adding cow dunk from now on please add house wast. you will get 10 time greater methane. Add 1 kg sugar every month.
This produces methane?
+Kalpesh B
Thanks so much for the excellent practical suggestions. Your suggestions, if I understand correctly are about temperature and feed mix. These suggestions and questions have been raised by a few folk on earlier posts so I have copied some earlier responses here:
The anaerobic decomposition seems to be very temperature dependent. I have since added a heat exchange to the
digester using 15mm black plastic water pipes and circulating warm water around the digestor in a closed system. The pipes return the ‘cooled’ water to the house roof so it can be ‘reheated by solar radiation’. There is a small plastic reservoir at the high point in the system to allow for any expansion in the water. The pipes around the digester are insulated with old blankets and strong plastic sheets taken from advertising banners. To pump the water there is a small 12volt circulation pump connected directly to a 10watt solar voltaic panel. It seems to work quite well - not sure how long it will last. I have also covered the pipes on the roof with 2litre coke bottle to create a long chain of interlocking mini hot-houses just to give the heat absorption some help!
Photos won't copy to this post, so I've shared them on Google+, hope you can see them.
I have read that it is ‘best’ to have a mix of organic feed. The reason for this is complex and interesting. From what I understand it has to do with the process of decomposition giving rise to various populations of different bacteria feeding and growing and producing ‘feed’ for other populations of bacteria. There are said to be four main processes during the decomposition: hydrolysis, acidogenesis, acetogenesis, and methanogenesis, and these four steps are
associated with particular bacteria. Most methane is produced during the final step: methanogenesis. Once again from what I understand a good mix of organic feed at the beginning would allow the populations for each step to flourish because there would not be a limit on their particular feed.
Here is a representation of a graphic from the excellent Biogas Handbook which can be found at : www.lemvigbiogas.com/BiogasHandbook.pdf Chapter 3 supports your suggestion best.
Also find a useful diagram here: elderslie.wix.com/elderslie#!biogas-cooking/c229f
It seems cow dung has a relatively low methane yield on its own so it would be best to begin introducing a feed mix
from kitchen scraps and some food waste together with the cow dung, in this way fats and proteins would also be part of the initial feed mix.
Another reference form Mike Reynolds (see comments) is an oldie but a goodie:
journeytoforever.org/biofuel_library/MethaneDigesters/MD1.html#synergy
+Kalpesh B Why do you discourage use of cow dung please?
+Shau 78 HI I am not actually. Its faster to grow bacteria in house waste rather than cow dunk, because of the sugar content. but you should always start with cow dung as it good for beginning process. all scientific bio digester or CNg producers using the same methods. I like his design it's the most accurate video on web.
Thanks.
I would have liked to see you do things while explaining. (IE. Filling the digester with "Fuel", emptying out liquid from the barrel kind of thing)
Neat video
using steel wool to remove H2S sounds great. Thanks for sharing
Please What does the steel wool look like??
I like your biodigester - biogas system.
Hi Wayne.
Great video - Thanks.
If you were to redo it from scratch, what would you change if anything?
Would you make a larger one to get more methane out per day?
Short and informative video - thanks for uploading.
amazing setup..wow cant believe this quality methane gas can be made at home
I have found this nice information on domestic biogas which is really helpful.
Though i have read most the posts and replies below i would like to know the tentative dimensions (distances) of inlet pipe location inside the digester, exact desired location (elevation) of outlet pipe, max liquid level in digester ( or the distance left for the gas accumulation inside digester. I guess those will affect a lot with production.
Also would like to know if we need to drain out all the matter from the digester at some point of time in future. For how much time we can go by adding new material on daily basis?
Excelente Servicio y práctico, un gran ahorro económico. Gracias por tan valiosa enseñanza , 👍🙏
Thank you that was really awesome
I was just got through speaking of methane gas today
I love it when I observed things that I was trying to discover more of myself
Good way of filtering the SO2.
Nice set up
Great video. Good steady flow of explanations on what you did, and nice hardware setup too. Well done.
Can I ask u some questions I didn’t understand in the set up??
This is really great. Thank you so much sir for the information.
One of the best and most comprehensive videos. I am into hydroponic farming, and want to use the CO2 in a controlled enclosed environment during the day. How can I extract CO2 gas from the water?
I like the floating accumulator, also releases gas safely when there is excess!
Hi John. I didn't understand how the floating accumulator worked.. Do you have any insight into that?
Echt cool und super für den Hausgebrauch. Geniale Arbeit.
Wonderful video , how did you do the water float and Co2 filtration part ? the design mechanism ... Also , for the slurry delivery , the pipe delivers it to the bottom of the tank right ?
I have three questions Sir,
1 Don't you need to insulate your digester?
2 Don't you need to have some means to stir the digester?
3 Do you have some means of removing accumulated solids from the bottom of the digester?
Great idea using compacted steel wool as a scrubber and firestop.
Thanks in a million. Great content. Awesome. Grade: A+💥
That's the cleanest methane flame I've ever seen from a biodigester. How often do you need to change the steel wool? Also, do you think there's a practical way to store the gas in fairly large quantities?
Rusting is an exothermic process and can easily get out of hand.
Dear Wayne, I asked myself the same question and wonder if that could be possible to do the filter of some kind of clear plastic (or even glass) material in order to visualize the reaction between the Fe and the H2S. This could be a good parameter to decide when to change the wool. What do you think?
On landfills where they run the gas in to large engines i think they use carbon to clean up the gas before it gets to the engine.
And?
I've installed systems that don't have a scrubber, and the flame is a little less blue, so I think something in your cleaning process is working. Does the gas have an odour?
Water vapour( and amonnia) is present in the gas produced. Some water may be removed by oxidation of the steel wool, but water vapour would be reintroduced in your water trap. Despite this, do you think the steel wool might last longer if the scrubber was installed after the water trap?
Do you get water blockages in the pipes run along the floor?
Many more questions!
That was cool. The Australian Sir Paul McCartney teaching us about biodigesters.
Thank you so much for your video.
What happens to the gas if you do not use the scrubber and allow it bubble in water?
Thanks for the instructions! Looks great! Do you have a list of all the materials to go shopping for? 🛒
Everything I wanted to know about biodigester I learned on this vídeo..... O Melhor Biodigestor ( TOP BIODIGESTER ) PARTE 1 & 2...with subtitles in english.
Great video, very neat system and very clear explanation.
Could you increase the pressure by placing some extra weight on top of the container in the water container?
i bet
Incredible! More people should do this.
Fellow South African here, How long can you cook on that little flame when the reserve is full of gas?
Wo... ha... simple and great way of explaining stuff.... good going...
Great stuff. Question- how do you clean out the digester when the material is spent ?.
bronze wool works better,steel wool can set on fire inside the arrestor on some occasions
I would try crushed charcoal in this location. Iron with a bit of moisture can ignite and burn the whole place down.
@@andrewpaczuski6381 it is proven and tested to use a crushed charcoal?
better to use stainless, or a “gas fuse” like silica sand, or a bubbler as a flashback device.
after how much time do we need to replace this bronze wool & how much % of hydrogen Sulphite can filter by this wool as compared to steel wool?? tnx.
I'm not sure on the amount of time but it handles higher temperature that steel wool and doesn't break down as fast, the sulphite might not get taken out as I think but not sure that it is filtered by iron oxide which isn't in bronze but you could always rust up some steel wool and filter it through before you get to the arrestor l, also a good addition is a pressure release ball valve, it's just a spring holding a ball, like out of an old mouse, to a hole on your water flashback chamber so if it does ever get back that far the system won't just implode on itself it will pull the ball down and release the pressure then spring back and reseal
Thanks so much for the shared video, I have learnt much from this. God bless your heart
I want one! My little farm would really make good use of it!
Very creative!
Science- you gotta love it!
Going to boil some eggs...
.....how much does it cost?
Oh, about 4 cows.....
i have seen one guy doing this in my area, he collects the editble waste of everyone in his street to feed his biogas plant for his needs and i also thought it was such a great idea to get waste turned to gas but reality is that its easier said than done and i gave a like to this video so bye now
Brilliant! I love his accent almost as much as I love the biodigester.
There were parts of the set up I didn’t understand, can I ask u ?!
Wow Amazing information
Very nice setup .-well done . A question or two - what can you power on 35 L's of methane ? how many liters of water could you boil on 35 L? - Could you power a hot water unit? thx
very good video. I am planning to make a bio digester my self,can you please tell me why was it important to have the storage tank floating in water. why can we just use a pressure Guage?
Thanks for the great video! It's a very good system.