Bro you still did a good job filming and explaining a big thanks for that

Ty so much just learned about h2s tday~

Great 1st question

Man i love the idea of concenverting one residential home septic tank into a biodigester tank that creates free Biogas! I think a local cow farm created an underground methane tank They decided to connect their biogas to a power generator and create another stream of income for their business by selling power back to the grid 🌟 🤩 🌟

Same! Ty for building a whole channel on this topic!

greetings from southern Brasil

Do you have a link for the filter housings?

what type of compress I can use?? for example can I sue regulare air compressor?? I have concen with igniting the methan as I compress the gas?? any feed back would be appreciated

This is a great resource.

I calculated energy consumption for filling a high pressure 4500PSI tank, it would take about 8Kwh to fill a 33L tank. That tank would contain about 100Kwh of energy if it were 90% methane, if I were to use that methane on a 40% efficient generator (very optimistic) and then use the energy from that generator to power the compressor, I would require 20Kwh of my gas to do so. Meaning to store 100Kwh of 90% methane gas at 4500psi I waste 20% of the energy of the gas. It's an ok number, the problem comes when you realize biogas is not 90% methane, but much less.

If you know someone with a biogas digester, you can also use a sample from his/her digested fluid 👍

Poop

I presume the biogas is all methane and has less calorific value than propane, hence you need to up the flow rate?

why not have a presser relief valve in place of the bubbler. Also you could have the compressor attached permanently. have a valve between the digester and the gas storage area. so they digester does not end up with vacuum. hope that can help out have a 2 or 3 bar presser relief valve 2 bar is 29 psi and 3 bar is 43 psi

I am a CNG/LPG kit installer by profession and I compressed my biogas and run my cng car with it. Only thing you have to do is tune the kit a little richer just like you did with your stove/burner to compensate for the leaner gas. You get just a little less power but it works fine. My concern is that biogas has a small percentage of Hydrogen that might make the steel tanks brittle overtime and they might explode eventually under pressure. I have type 4 carbon cng tanks but am still afraid to use them as they are not rated for hydrogen. I have seen videos of cng tanks exploding and I don't want to experience this so I stopped doing it. If you can find a way to get rid of H2 then that would be great. They say that H2 molecule is so small that it goes through any tank even steel ones so I guess that by the time I compress it into my tank it should have already escape but I am not sure as I have no way to measure H2 content.

If you use solar panels to power the compressor then I guess it's fine, otherwise you would have to change your car with a new electric one.

Hey it's your long lost buddy you gifted the black German Shepherd to in NC. I switched phones and need to track down your number. Haha. Nice channel!

Sorry, I can't answer any questions here. I have one myself though.. the f..k is your neighbor up to, are they just f'n with you. Also, thanks for the videos!

Thanks for the videos. Quite educating and unique 👍. What do you intend using as a as an extenal storage system for your gas? I had to shut down my first digester due to inavailability of a gas bag..... Biogas technology is not very common in Nigeria making Biogas accessories very expensive.

Great video! I have followed your channel for a while and have finally started to build a digester. I’m going with the ibc tote design from solar city. I appreciate all your videos. I feel like I remember you mentioned hoping to run a car on biogas, did I remember that correctly? Have you experimented with that at all?

I guess moisture is a big problem. If you rust your gas tank from the inside you'll blow yourself Up...

Being on 100% solar, pumping biogas or splitting H20 with solar electricity does me no loss.

Amazing 🤗.... Where you got really crazy 😧 ( 09:16 Sec) ....... Triggered my comment 😊........ Because I've thought of this several times. Infact, thought I was the only one with this crazy thought in the world 😅. "Pursuing my degree in Microbiology"

hey sounds like you opened pandoras bio-digester (; I think this time I can help with some of the questions you brought up , first I've read in a few places and it's my understanding that there are two parts to metanogenisis (the biological creation of methane) the first is the break down of organic molecules (the wast being fed) in to acetic acid or other anaerobic carbon based molecules, this part can be done by "other bugs" and my be more efficient with more specific bacteria or archea, the second part of the process is the actual formation of methane with the consumption of the acetic acid and production of methane. there is a "delicate" balance between the to stages because the first creates acid wich lowers the ph wile the second part is limited to a more ph neutral environment, that's why you can't put to much feed at once or it will all go acidic and the process will stop , in a healthy digester the methane production (literally) eats the acidic molecules creating a balanced . on the part of sterilizing and having a specific culture to my perspective it will not help and probably counter productive as bacteria and archea all have a wide range of biological pathways, meaning thay can do meny different things that create meny different biological compounds like from co2 to metanol acitic acid and meny others , mostly it depends on the chemical conditions thay are found in, so sterling and selecting will not help so much, what more thay are geneticly very flexible so its not like you have a chicken in a pen and you know it will stay a chicken tomorrow, with archea you can come back tomorrow and find a walrus in sted of a chicken. the bio-digester is actually an ecosystem with all the principles of ecosystems applying to it, so it thrives on diversity and is defind by the conditions that are present. I'll share my one (bad) ideas on dealing with the co2 , and oxygen , first as a biology geek I was thinking of organisms that take in co2 and obviously plants and defrent photosynthesisers take in co2 , and thay also produces oxygen as a by product, wich can make a very flammable combination of methane and oxygen gas , on the other hand there are some plants like different kinds of cactus 🌵 that take in co2 and release oxygen at different times and may help filter out the co2 it needs more research, and for the oxygen it reacts with iron in the proses of rust so maybe if the material is fed through some rusted iron it will absorb the oxygen before it gets in the digester.

Just wondering. Is there a reason you're sucking the gas through the filters backwards? I guess it doesn't matter with the filter media you're using. Just seeing that you're going against the flow arrows on the filters triggered my ocd, lol!

About how long do you figure you can run that heater off that tank if it was full? And how many PSI do you put in the tank? Thanks

I love to see you do another compressing video

I think so for saving it for winter time

Thanks for the video

is cow manure the only type of manure that can be used?

You can probably just coil some wire around that igniter and attach it to the other spot. Then bend the piece of wire down into the gas stream. Just looking to get that arc close enough to the gas. I cant see why extending it with more wire wouldnt work

What exactly is the issue with air in the system? i assume there is small amounts of air in the filters so some air will be pushed into the tank.

man get your stuff together before posting,you're using wrong fitting replacing them by 2x"s on top of a freezer the propane was to close come on.

“I don’t have to rely on anybody for energy- this is mine!” Just starting my evening binge-session Nate, really liking your content. Thanks again for sharing this. Respectfully yours, Alan

Begs the question, “how many miles-per-fart”… I’m curious to know how to build my own methane digester, how to purify the gasses emitted by the digester, separate the H2SO4 from the methane, how to compress it for useful storage, etc- and here you are! Glad to find your channel, and to have subscribed. Keep up the great work! Respectfully yours, Alan

Nice vid! People that carry the Buddy Heater accessories typically have a hose with the old style left handed connector. In case anyone needs to know.

Do we need license for these experiment?

Gylcol is basically Antifreeze. propylene glycol also used in foods 😬 But you can buy it in gallons

🤔 Air tight filters under water in the shade or hose running inside AC area. still in water. Solar powered Mini pump, aquarium pump. After a check valve, before the filters. Second tiny line in the water to displace heat, bubbles Last filter, desiccant, outside in a small Black box with Glass on front in the sun. HIGH HEAT 🤷

You can run a Generator on Biogas with an Aquarium pump and gas kit. Start the Generator with tiny bit of gas, To get the Pump running, then switch to biogas. works. Then Free Electricity. So then compressed biogas become closer to Free.

Your question seems to show a big misunderstanding as far as what compressing the gas is doing. Compressing gas gets not more useful energy out of burning gas so it is 100% inefficient to compress it unless you are using the decompression cooling effect. Assuming bio gas compresses as well as air a 2 cubic foot tank at 100 psi is going to have about 13.6 cubic feet of unpressurised gas when released. As far as how much "power" is in your gas 1 W is equal to 3.41 BTU/hr or other way around 1 BTU/hr is 0.293 Watt. You said your gas is about 700 BTU per cubic foot so 13.6 cubic feet will have 9520 BTU if you compress that into a 2 cubic feet tank it will still produce 9520 BTU when burnt so all your compressing did was take it from 13.6 cubic feet of gas and make it 2 cubic feet. 1 hour of 1 KW is about 5 (or 4.87) cubic feet of your gas. Compressing that gas gets you no more energy out unless your gas is spinning a turbine as it depressurizes before burning or you are burning it under pressure, it just makes it smaller and portable so if you take that same 13.6 cubic feet and compress it into a canister your going to get the same heating when you burn it just 13.6 cubic foot gas bag is a pain to handle where a pressurized canister is much more manageable. Is it more efficient to burn gas or use gas in a generator to produce electricity to do the task you want it depends on the task and the devices you are using to do the task. Firstly a petrol driven electric generator is normally about 50-60% efficient assuming your generator is not 100% designed to run on bio gas its probably going to run less than that could be anywhere from 30-50% at a guess. Simple test you can do is get a KW meter and run a 1 KW device for an hour (or a 500w device for 1 hours for half the numbers) on your generator running on bio gas see how much you used based on above calculations 9.7 cubic feet of gas producing 1KW would be your generator running close to 50% efficiency. Heating burning gas is going to be basically 100% efficient similar to electricity in a heating coil. Introduce an electric heat pump in normal operating conditions suddenly the heat pump can be around 240% efficient at heating because its moving heat not making heat even at 50% efficiency to produce the electricity you getting more heating on a heat pump. Not to mention for heating you can use the waste heat of the generator producing electricity to heat as well improving your wasted 50% of energy making electricity. Then you have a very complex system that is very efficient. For cooking burning gas is probably going to yield better results because electric cooking devices take longer to heat up so your using them for longer if your paying a 50% penalty to make the electricity from gas then your paying two costs. If you want to use a washing machine use the electricity no one wants to heat water manually churn the water to wash etc. Refrigeration lets just say that gas fridges went out of style a long long time ago but it is a way to use the energy you put into compressing the gas. Thoughts on Hydrogen As far as hydrogen gas generated from electricity its about 20-30% efficient to make the hydrogen so only do it if you are using "waste" electricity. Most hydrogen gas for industry is produced using energy intense steam reforming on methane so if your burning the gas just burn the methane bio gas. Side note handling hydrogen is NOT like methane, hydrogen can escape every container its ever put in over time it works its way between the molecular structure of its container weakening its structure. It also has no smell and fills a room top down so by the time it finds an ignition point its likely taking the building with it. It is way way more explosive than methane. I would STRONGLY caution people with a can do attitude from working with hydrogen it really is something you want a good understanding of before you play with it. If you are going to "play" with it do it in tiny amounts until you have respect for it we are talking cubic inches of gas not feet. Hydrogen fuel cells for electricity are cool tech but not practical for much other than devices that have very interesting design requirements like space based tech.

Inner tube removal would suggest using a expansion tank as in the one used for plumbing it's a steel tank with a rubber bladder inside is a vacuum pump to make the bladder inside expand and use an air compressor to compress the bladder inside to expel it there's no potential contamination and you can chill the tank and internal bladder safer smater and stream line. You can also get these tanks with internal bladders in 20- 200 gallon capasity no more inner tubes.

Based on the compression rate data that you have supplied visually it would take about 7.1 hours and 116 inner tubes to fill the 200 bar gas tank that you have described. Might be good to find a bigger gas transfer mechanism than the inner tubes, perhaps air mattresses?

Software and telecom background, so not entitled to give the right answer, but interested in the topic nonetheless. My thoughts are: - in a perfect system, energy in = energy out. Since you loose energy somewhere in the process (heat released by the compressor for example), then compressing has an energy cost that will never be compensated - Efficiency would be measured comparing two systems. Transferring electrical energy from A to B using a wire is pretty efficient comparing any solution involving storage of energy in the middle - What type of efficiency? (electrical, volume, ..) - the raw energy comes from the sun, so I would compare its a biogas system to another system that stores solar energy (from the sun to its final storage form)

a 2kw generator needs about 3 gallons of porpane an hour..... ??? "1 m3 biogas is equivalent to 0.46 kg LPG" so 12.5m³ of biogas for 2kw. A ⅓hp 3gl air compressor needs 0.5kw for 1 hour, it runs 1/10 of that so 0.05kw. How much biogas is in a 3gl air compressor? You need 0.32m³ to git that.

Pretty sad our system is so corrupt people have to pick up in their garages where people left off in the 1800s jist with better tools and accessibility to the knowledge. This should be at every household or in stores or warehouses being sold constantly. We go though so much trouble to harness materials from the earth when really we shit it out every day.😂 im not sure of the combustion difference and chemicals put out but this and many other methods need looked at again by top notch universities that aren't paid off if that exists. Hats off to you for doing so much for just one guy.

The problem we're facing with uncompressed biogas is the space it occupies. We are currently using water displacement in large tanks to capture the biogas. And it does take up space. So, I guess considering those things, compressing biogas for ease of use and transport can be considered when talking about "efficiency" of compressing biogas. Thanks for this!

That tank fitting can be purchased at Lowes or home depot in the barbecue section.

I want one that i can flush the toilet into.

By the way.. that looks like a Carbon Tetrachloride fire extinguisher.... in other words, "Cancer in a can!" I'd avoid discharging that if it is indeed....