Just a tip for getting air out of your bottles, methane/natural gas is lighter than air, if you turn your container upside down and start to fill it the methane will rise to the top and push any air/oxygen out the bottom. Quick - simple

This is how they power the Thunder-Dome...These Aussies know their biogas.!

Just stumbled across this video. I am looking forward to seeing more on this. Compressed storage has been my reason for not doing bio gas so far. Looks like problem solved.

we need a biogas revolution! Power our stoves with biogas Run generators off grid with biogas

Since being in lockdown because of covid 19 I have stumbled across biogas and my first thought was storage of the gas will be an issue. This is awesome! Thanks.

If you use an old fridge compressor you can get much more pressure and possibly get the gas to liquify.

Beautiful. This process solves all the tar and mobility issues. The next step would be to use a high-pack compressor to a scuba tank.

LOL of Course! An air mattress. I never thought of that. Like the vid bro, off to watch your other vids

Nice build. A little concern on the safety side of thing. the lack of flashpoints and flash arresters on a build like this coupled with a nuffy could make for a bad mix.

Very smart, dude. I love your video. Thank you for your share. I appreciate a video well done. Cheers mate.

Great internet. Giving solutions to all our dreams.

Great to see someone with the same idea . Cheers!

The air compressor is also a vacuum pump. Vacuum your tanks and keep them cool prior to filling.

Flexi biogas an African start-up have a less intricate set up. Enjoyed your video thanks.

I'm late to the party, but like the video. A couple things: sodium hydroxide is NAOH (Caustic Soda) , Bleach is NaClO (Sodium HypoChlorite Soln). Not sure which you prefer. Also, I was concerned about the combustion point of biogas under pressure, and would like to suggest cooling your compressor with water while compressing the gas. Thank you for sharing!

Thank you for your video. Could you show us how you filter your biogas? We would love it!!! Thank you

If you put the take in the freezer to get it cold then put it in ice to keep it cold. You should be able to get more gas in the tank.

I suggest compressing the gas when the bladder is cold. This will reduce the kinetic energy in the gas compression and increase storage by 10-15%> if its freezing cold you may get an extra 15% as the compressor has more volume per unit ratio. Also there should be less thermal energy at the compression stage. I also recommend some mineral salt at the interstage between gas and stove. This will retain any excess moisture and also add color to the flame ..yellowish so it can be more visible at the burner. Rock salt should suffice.

Few questions here: 1. What was the total volume of the gas filled into cylinder? 2. At what pressure was it filled? 3. how much time did it take to empty the gas by burning continuously?

For smal, simple, home use, couldn't a person just put a weight on top the air mattress, so it's pressurized? Or do the same for any other pillow type pods? I would think that even an elastic band around it may work? Something that gives constant pressure on the bag?

Energy density of liquid propane is 270X it’s gaseous form. This video @120 psi is roughly energy density of 6.6x. Going further a regular propane tank has 440,000 btu while this would only have 29,000 btu compressed at @120psi. My math might be off a bit but those are rough numbers.

Nice job thank you! I.am getting it, just need to see what pieces of valve to buy!

The biogas must be dried and cleaned of H2S to store it like that. The pressure needs to be regulated as propane liquefies at a lower pressure than methane will. Also the coefficient of expansion is higher so you will want more head in the bottle. It's better to use the bigger size bottles. At 500 liters at stp of propane you will want about 70^ of that for a safe fill of methane in the tank.❤

So nice. Clear and simple. Tks sir

Thank you very much very helpful

I love this! I see problems with the wood gas not burning hot enough.I’m very curious to see if you attached an oxygen bottle with the wood gas (like you would a propane torch to cut metal) would allow to combination to burn hotter more efficient/effectively and allow you to use stock size fittings and decrease the gas use and allow your utilities to work at normal operating ranges like they did with lng, or lp.

Dude DONT EVER use quick disconnect fittings with any fuel as they leak over time, and if they start allowing air to enter the system during pressurization you are making a B O M B. The very best storage vessels I have used are inner tubes used on 18 wheeler tires, and they are easily joined together with tubing or hoses for long lasting gas storage.

Pass it through a radiator to cool it down before it enter the tank or else you might experience condensation in the tank after the gas is cool down.

Safe as houses. Id suggest adding a cold bath(ice and salt) to chill the bottle. Get a lot more into it, gas pressure drops to 0kpa at -42°C. Maybe even go so far as to cool the pump head of the compressor for longer filling time before overheating.

Good job

To clean up the bio gas use a filter that has some steel wool and some NaOH bleach solution to destroy the SO2. Then filter through some charcoal to remove some unwanted compounds. Next compress to a tank that can purge moisture and have the gas flow through a dryer and CO2 scrubber made of MgSO4 and dry NaOH. Then have a fine filter and compress into the tank. You will be left with clean methane of about 95% purity about 5% CO2.❤

whats the explosive risk with using a combustible gas in a conventional commpressor? Would a diphram pump be better? (Albeit more expensive)

great video and interesting. Just one thing. Sodium Hydroxide is not bleach its Caustic soda - like in drain cleaner. I have seen steel wool in a tube used to get rid of the unwanted component.

Thanks for the video! I have to say that your facial hair looks like a very good ratio of oxygen and fuel.

Ive been waiting to see if anyone came uo with a good way to store bio gas. Look's you have the answer

Isn’t it possible to just run a hose from the air mattress, and go right to the propane stove? (I think the orifice needs to be enlarged, though, for the gas stove to work properly, eh?!?) Good video, as usual! Thanks, brother!

I skipped all this gaseation process by just shitting directly to my barbeque grill and then lighting the turd up! What a delighted natural smell over the sirloins it gaves to the barbeque audiences with their exclusive wines and ties with!

Center Enamel offers anaerobic digesters and biogas storage tanks for biogas project. We design, manufacture and install biogas tanks for more than 30 years.

This is very interesting. more videos needed. what if you use hard plastic containers to counter the corrosion issue?

I've been thinking about how to compress bio gas for a while and I envisaged a problem with using an air compressor like you have, that being the heat generated by the compression, but using a heat exchanger would solve that, however I thought about another potentially serious problem that might occur, especially as the gas volume drops in the primary storage (the air bed), this would be that outside air could potentially be drawn into the compressor cylinder past the piston rings from the crankcase via the crankcase breather. Any ingress of air in this way could lead to spontaneous ignition like a diesel engine, resulting in catastrophic failure, so I'm wondering could a diaphragm type pump be better suited to do the same job.

"ish" - A precise unit of measure used when working with high pressure

Exactly what I was thinking about doing.

dont you have to remove sulfur from the gas, or how are these metal particles looking ling like after 2 years of usage?

Maybe a fan ontop ofnyhe compressor heat fins to help disapate heat quicker.

So how are you purging the air from the propane tank before charging it with methane?

Maybe it would be good to put a condenser on the output to cool the gas.

Any chance you could make a video about removing the hydrogen sulfide, CO2, and moisture from the biogas, showing how to create the items needed to remove them?

Put the bottle in the coldest freezer you can get. If you manage -80C, you could get the gas to condense, under pressure. Maybe I'm just dreaming. Lol

Any experience using damp wood ash to upgrade the biogas / filter out the CO2? Cool setup tho!

Hello, How can I get the compressor here in India

Great video, love your experimenting spirit! I am thinking if I can use a diving compressor to get the gas on 200bars bottled.. How you think the compressor designed for air will take the gas? Maybe I can build a temperature safety switch, add cooling and build a condensation section before entering the tank.. Any thoughts? Thanks !

Great stuff pioneering

Brilliant! Can you hook one of these bottles up to your car next please?

By chilling the Lp tank. Say nestling it in ice. Could the biogas condense . To get more volume into the tank. Would the pressure increase once filled to your systems capacity or reached it maximum ability . And removing it from the ice crib. To warm to ambient temp?

IF you can keep the temp of the bottle under 50 degrees then, "in theory" you could get about 280 litres of gas into that bottle just keep in mind that propane has a vapour pressure of about 130psi at 25 degrees C but methane is about 670psi but the bottle will vent at about 250psi, so you will never get it to a liquid state, but it is still a lot more than the propane in liquid form. Dont blow yourself up. putting the bottle in ice water may help, just a thought. Other than my concerns for your safety this looks great You may want to look at using liquid thread seal instead of the tape. you can get it at bunnings. The other thing limiting you may be the compressor itself just not strong enough to get higher

Hw many days d cylinder can be used in d house

U should have weighed the can empty then show us the weight of the can wen full so we can see the weight in millilitres or kg

I wonder if putting the tank into a vacuum prior to filling it would help

Don't use lock tight use Rector seal for gas.

You are very brave man 😅 i think compressors life will be quite short, in plant that i was building, controlling the quality of gas was one of the problems. You need to measure % quite often. Most likely your compressor will be eaten by corrosion quite fast. But cool experiment.

saludos desde argentina mi amigo muy bueno

Love this. Any updates about how it has gone using over time?

I need more videos on this about biogas as light.Thank you.

Well,how do you keep the device save when it work，especially the biogas is methane which it is hard to compress that totally different with propane which the main componenet with LPG and you sure that the BBQ would not to blow up when you compressing biogas?

How come your not using a water separator between the mattress and the compressor ???

Thank you so much for the video !

Hi, is there any risk of explosion using that type of compressor? It has a piston right? For example if you forget to change or add new oil, is it a risk? Or does the absence of oxygen minimize it?

the higher the psi the hotter that compressor is going to run, how hot would be too hot for biogas to not cause accidental combustion, how do you ensure no oxygen in line?

You can use iron filing or steel wool as a scrubber.

how long did it take you to fill that air mattress with biogas?

does biogas last longer than normal lpg

Nice

Thanks

If that works with an air mattress it should work with a waterbed mattress. Thanks man

I thought about trying to compress methane if I could ever try and figure out how to make some I seen some bio digester units for sale my question is is there a safer way to compress that if the compressor gets too hot would it not explode?

@Lucky Hill Farm i will be waiting for your response how I can compress pig Biogas

I seem to recall that an iron sponge filter will scrub out that hydrogen sulfide. That and a carbon filter should eliminate odor. Correct me if I'm wrong.

How many psi does the compressor hold. You could use that as the bio gas tank I guess

hi mate my wife wondering what's the name of the goose in the picture ? 😊

Main thing I'd be concerned over is the hydrogen content. On the highlander side of say 15%-20% by volume, your best bet is to not compress it beyond 50psi. At around 150psi, it can autoignite: that's how an experimental plant was turned into a crater in NM or NV, I dont remember which. They were trying to find new ways of storing pure H2. Best way to do it is similar to acetylene using carbon (graphite), but that poses a different issue altogether. If memory serves me right, NASA had a substance they discovered that enabled H2 storage in smaller tanks, but you basically had to irradiate the source material to create it, and good luck not having the feds show up on that one haha.

Nice vid. Thumbs up. If you addressed gas jetting I missed it. Did you have to modify the gas orifice, or just use either a propane or NG nozzle?

Also chill the tank in a ice bath while filling so its easier to fill. As it warms you'll notice the tank pressure go up. An old larg belt drive compressor doesn't warm as much

I think it's much easier to compress gas if you freeze the cylinder.

take that one way check valve off the side of the air tank and add it before the gauge and you will be able to get more than 125psi in the tank and gas wont run back into the compessor

Are you using the lp fittings or did you have to change those to work with the biogas? I was wondering if getting this into a bottle was possible! Great video!

Why not use bicycle pump or use a tank that slips into another tank that holds water as a seal this way you loose none

Did you check your audio quality sir?

H2S out of wood gas... if the wood gasification chamber is not getting high enough nor has a pressure regulating valve the H2S wont get hot enough to decompose into sulfur oxide gas that can dissolve into water through a percolator making sulfurous acid, similar to phosphorus acid... lead acid batteries from wood gas filtration?

Been considering doing this with pcp air rifle compressor. Capable of 4000 psi.

This is great, just wondering if we had a plastic bottle rather than metal would the gas have any effect on it, would there be any sort of degradation to the plastic material.

how long does it last for 13kg cylinder.What pressure do you use.

muy bueno mi amigo saludos desde argentina

Can you write the difference between the weight of the empty gas tank and the weight after filling the gas

When you are compressing gas if you put a condenser coil before it goes into the tank wouldn't that lower the pressure so you can get more in?

You shouldn't fill any propane cylinder past 80 % to allow for expansion

How did you convert the BBQ to burn methane

Some valid info /Thank you.

Would like to see if one could use that to run a engine similar to a Hyster motor which can run on LP gas

We put nose weaner rings on cattle to stop them from suckling on the cows.

where is a good place to get the tank filling valve and connector parts?