@@chemicum nice! Well thought out. You obtained a good amount of milliamps for a MFC I was wondering if did you measure the resistance of the mesh with the glued activated carbon by any chance?
@@chemicum oh okay, and may I ask if the activated carbon is just the same as activated charcoal? do we really need it to be able to make the mfc light up a light?
@@chemicum hmm.. it sounds like a complicated method to use, but can you describe how you would do it instead of using mud and just agar. I personally faced problems, pouring the hot agar on top of the anode because it will kill the bacteria on the first layer of agar.
Hello, im doing a proyect about this subject and i want to know, because i read that you can not connect them in series because that generates reverse voltage, but can you connect them in paralel and obtain bigger current? And if you know, is there a way to avoid the reverse voltage? Thank you
Do you know what pressure did you compress the anodes and cathodes with the hydraulic hand jack? If not was there any other indicator that you used to know when to stop pumping?
How much power and current density you reached in this experiment? Did you experience any problems with your configuration, putting cells in serial mode? Were the cells stacked? I would like to read your works, are you registrered on researchgate? I'm working with microbial fuel cells too, it's an exiting field!
max values are shown in the video. Serial mode works for shorter demonstration experiments, no data yet published for long term experiments www.researchgate.net/profile/Tavo_Romann
I'm going to use it on the aluminium mesh in order for the activated carbon to attach. It's so hard to find epoxy glue in our place. So we're going to use epoxy resin or is there any alternative for it?
Man, thats amazing. What are you studying ? this cells in bigger scale can be storaged and used as emergency power cells (alternating them every couple of hours for max efficiency) to light up several LEDs ? Keep it up, nice work
@@ishimiyaki3904 More surface area means higher reaction rate. Secondly, bacteria like carbon, but they won't create biofilm directly on stainless steel.
I've made a fuel cell exactly following your technique - thanks for the excellent video/instructional. The anode and cathode technique worked perfectly and I am getting a good amount of current (100mV) from very small cells. I have one last question: Why does the lid needs to be on? Won't that limit the amount of oxygen getting to the cathode? I am unsure whether to have the lid on or off. Many thanks again, James
Making a PMFC though would be more sustainable since I believe the MFC would evetually run out when there's nothing more for the microbes to eat. Having a plant giving them nutrients will make it go on indefinite as long as the plant lives.
Hi.. I'm also doing my research in this area.. I have some doubts in this work.. It ll be helpful for my research if I get a reply from you ppl.... Which kind of MFC is this? I mean single chamber or dual chamber..If ans is anyone of the above which one s act as a proton exchange membrane here..? If not, can we call this as a membraneless MFC...? Can we propose this like that..? My main que is requarding proton exchange membrane.. Thank you..
@@chemicum thank you sir.. I read many papar for membraneless MFC.. All use some cheaper material r some direction change for that... Can we propose this as a membraneless MFC sir? Do u have any paper for this reference?
olá saudação aqui do Brasil !! bom trabalho estou fazendo uma bateria parecida... só que ao invés de bacterias estou usando uma proteina e células orgânicas para quebrar a molecula dágua em um processo bioquimico e assim liberar os eletrons contidos na água !! vejo que o grande problema dessa celulas MFC é que a lama dela é pobre de ions,vc teria que usar uma solução eletrolitica que n fosse caustica e nem corrosiva, para ionizar a lama !!existem eletrolitos de celuals HHO que solucionam esse problema pra vc !!
Hi...it's really a amazing project...I have a query that...in most of the videos on TH-cam regarding MFCs seen that the using of Power module to increase (step up) voltage is that really necessary??..have u used any power module??
subhabrata banerjee I have. Let's say that for a single cell it is needed as voltage is too low for most applications. For multiple cells connected in series the step-up converter can be omitted like in this video
@@chemicum Sir I know I am disturbing you..but you are so helpful I never found someone like who replied so promptly...it made me more enthusiastic...Sir.. can you suggest what type ultra low voltage power module can be used to light up one single normal led (3mm)...
microbes participate in the electron releasing process, but may also indirectly participate in the electron consumption process at the cathode. For example bacteria oxidize hydrocarbon to acid and in acid media around cathode the oxygen reduction potential becomes more positive.
Can you do a seperate video of single cell construction in very clear steps? Explaining why and what each step does, where the electrons flow, so that anynody can try it out. Also out of curiosity how many cells are in the elbonian power station and how much current is produced?
Individual cell assembly, why are the cathodes in water and the anodes not, why are both not two dissimilar metals and carbon, what percentage mud to waste to wastewater was used, what improvements can be made? We need more videos on these! :)
If you look it in PC, some additional explanations on video can be seen. We may do a new video with revised construction in the future. The nr. of cells in Elbionian Power Station is a national secret:)
+chemicum Can we at least know the power output of the national elbonian power station? What can you power with it? What about a tv or some ridiculous things? It'd be cool to see just how far this can go. The more extreme, the more views, the more ad money for elbonia's GDP to grow and make more crazy things. :)
+chemicum Can we at least know the power output of the national elbonian power station? What can you power with it? What about a tv or some ridiculous things? It'd be cool to see just how far this can go. The more extreme, the more views, the more ad money for elbonia's GDP to grow and make more crazy things. :)
Good day. We made 10 chambers, using wastewater and produced almost 2V and a current of 1.2 micro amps only. Can you help us, what can we do to increase the current? thank you. Your reply is much appreciated.
chemicum good day sir. We used typical wastewater from creek. We used the same electrodes, the only difference is that the spacing between two electrodes is quite big ( 20cm ). We are worried because we think that this design might not be suitable to the bacteria that we cultured.
20 cm sounds too much, internal resistance becomes too high, I had 4-5 cm as optimal. Also, it depends on the quality of the electrodes (any pictures of the sytem?) and it usually takes 1 to 8 weeks to get the voltage and power up
Thank you very much. It is indeed in a great timing as we are on a verge of creating a renewable source of energy to lighten up the world of the AETAs ( are an indigenous people who live in scattered, isolated mountainous parts of the island of Luzon, the Philippines). They can't afford to pay electricity that is why the local electric company doesn't invest on highland transmission for them. They have clean water supply yet no lights to guide them at night. I believe that you can greatly help us.
Hi, it must be quite liquid, but additional water collect on top of electrodes and can be poured away later. However, pure manure might not work well due to heavy gas evolution, suggest using mixture instead.
another thing sir, we are going to charge a battery how we can calculate the charging time since current output of the mfc was not constant? does the formula charging time=(mAh/mA1)+(mAh/mA2) where mA1-inital current and mA2-final current
@@chemicum unfortunately I cannot find.any stainless mesh in our area that is why I bought an aluminum one (the spaces of the boxes are wide). Would the aluminum and the spacing of the screen affect the bacteria or the current? Also, the activated carbon that I bought is a fine powder
Can we substitute both anode/cathode with layered aluminum foil/steel plate? Apart from corrosion/oxidation, is there any reason to solely choose carbon?
no, Al corrodes, steel corrodes (stainless steel can work). Carbon has high porosity and does not corrode. Substitute can be porous nickel or platinum, but expensive and bacteria may not like it.
chemicum OK. I got it. So you have to dip the cathode into water and the anode seems to be dry, right? Do you think mixing salt+water could bring better results?
When you testing voltage output (3.49), how to get electric AC (Alternatif Current) from your research? Are you make paralel DC and you converted to AC with inverter?
You need some electrical circuit to do it. However, low voltage converters have low efficiency, therefore it is wise to connect a few cells in series to get at least 1.2 V and then use a step-up converter.
@@chemicum if we are to check the voltage that the device is providing everyday, can we remove the LED light for a while then just attach it again just so we can check the voltage using a voltmeter?
@@chemicum oh I see, thank you for your response. Also, could you guys give me some more details about the anode and cathode? I you are selling those but I really don't have much money to buy it and It would be nice if I could make one myself, Just wanted to know if it's just a regular mesh smearred with epoxy to glue the activated carbon, and why is it pressed, it is possible to turn on a arduino? thank you in advance. sorry for taking your time
@@asvarius8760 The microbial fuel cell cannot directly power electronic toys - there should be voltage step-up converters and small battery that is charged from MFC
The best cells are 800-900 mV, but at maximum power, the voltage is about 300-400 mV. So, 20MFC in serier give 16 V at OCP, but 7-8 V at maximum power.
Its a membraneless design - mud acts as a separator here. Membrane-based MFCs can deliver better power performances, but bacteria like to eat membrane too and the lifetime is not so good then
wow! thank you so much!! I've been studying about MFC for months and my aim is to produce 10-50Volts. Can you give me advise to efficiently reach my maximum goal?
The method shown in this video is probably the easiest and cheapest, but probably not the most effective - catalyst/membrane/special bacterial cultures can increase energy/power density a lot.
Yea, i must admit thats true and morelikely i might refer my project to your work. Thanks a lot. I just have more questions please bare with me. Did you use any substrate to increase bacterial activity?
It is good idea and might work but in this case the electrodes should be separated with a membrane to prevent alcohol diffusing onto the cathode, where is oxidizes
Do you need to connect the wires sticking out of the MFC container for it to produce power or do you just leave it as it is and keep it open (unattached from anything)?
It can be connected directly to produce low power or left it unconnected (while supercapacitor-like electrodes gain charge) and then connect to gain higher power and voltage
@@chemicum Ohh, so that's why when I made 6 mfc and the volts of each is ranges from 0.015-0.024v and amps is 0.02mA - 0.08mA even though two days has already passed since. I connected the wires right after it was done. I shouldve left it unconnected to charge.
@@chemicum Also, do you need resistors to be attached on the wires because I've read something online that in order to achieve maximum performance, the mfc internal resistance has to be equal to external resistance, connect different resistors and measure power output, but I dont know how that works...
In the beginning of the experiment do not connect wires, wait voltage to rise. When it is at least 400 mV, connect some load to harvest energy. Disconnect wires and wait for a week
@@chemicum it's been five days and the power output still ranges at -0.015 to 0.009 volts. is that normal? will it start to rise after a week? or does connecting the wires right after the mfc construction greatly slows down power generation?
if the calculation was right.. a rack of cells would generate enough amperes to make a spark, but I also wait for Chemicum to answer this question. It s very inspiring me how to power my raspberry using MFC
chemicum Mhhh I'm sure you could increase the voltage and amperage when using Mn(IV)oxide supported activated carbon as cathode, right? My theory is, that it acts as a ORC (oxygen reduction catalyst) and therefore it prevents the biofilm forming on the cathode (not the anode, this would be bad). What do you think? I plan using manganese dioxide supported carbon from an zinc-carbon-manganese dioxide battery, these should have 1-5% MnO2.
It could work, but not sure whether bacteria like high concentration of manganese. If it is membraneless design, some Mn can be dissolved and diffused into another electrode. You should also make a blank mfc at the same time without catalyst at cathode
chemicum Yes I'll try, thanks. I don't think that manganese dioxide forms a soluble salt in non acid envoirnment because it is nearly chemically inert, it will form very very very slowly soluble salt in low ph, but in neutral or alkaline invoirnment normally not
This is a very cool experiment that proves more successful than double-cell microbial fuel cells (aerated water and mud), because the small MFC's can be stacked many times, taking up less space and producing a lot of energy. I would like to ask how many watts the Elbonian Power Station was able to produce, and how many MFC's were in the power station. Also, I would like to ask was every single MFC connected together with some wire that powered something specifically?
Max power for a single cell is about 3 mW if loaded for a day or two continously. 3 or 4 cells can power a LED. There are lots of cells but the exact number is a national secret of Elbonia :)
Well, theoretically 20 MFCs would give 60 mW so in 20 h it would be 7.2 Wh, which could load my cell phone 7 Wh battery. Practically, it would need a special charging electronics, because cell phones take 5V and want more current (and the voltage converters consume a lot). So it is maybe, a bit larger number of MFC would work more probably. But it is a good experiment idea, I could try it also
Good day, i would just like to ask. I was planning to create single chamber MFC for my college research but im lost as to which model i should follow, a single chamber MFC or two chamber MFC. Which of those two produce more power? and from your video, why is there no PEM?
Bacteria is usually present everywhere, many types work simultaneously. But chicken boop without soil can be too concentrated - better power, but efficiency losses due to competing methane evolution by bacteria
Update: so i manage to create 3 types of mfc; poultry waste, fruit/vegetable waste, canal slurry, using your method but everyone of them has given me a unsatisfactory result. Voltage average below 100mv and no current detected. Do you any idea what could had possibly gone wrong? Really need help :(
Hey I wanted to ask usually it takes how long for the cell to generate energy? I have done another of this with similar setup few days ago but it seems like the circuit has no current flow through. Thanks.
It takes weeks to get voltage above 500 mV. Measure open circuit voltage after every few days and do not connect a load before the cell has reached a useable power level. Then measure also short circuit current - we got maximum 8-13 mA for different cells.
It depends on the bacteria and substrate - if it is fresh anaerobic mud, it may start working much faster. We used early spring frozen mud and so it took lot of time.
yeah, our cells have worked more than a year and the cells still produce energy - until bacteria have something to eat. When the mud is depleted, just add new portion.
Very well done guys, I really laughed at the guys with the clamps on their noses ! ;) LOL ! Maybe you can still give these cells some sugar to let them power more ??
+chemicum Okay, also try to put sugar into the lower part of the pot and yeast and you will probably get much more power... Hope this helps. Regards, Stefan.
+overunitydotcom we have also tested some graphite and some graphene compositions. Stainless steel could be indeed replaced by some well-conductive carbon material. However, the price of graphene oxide is 50000-100000 $/kg.
chemicum Not anymore expensive ...Just use the method from Stephen Dail to make yourself these cheap 1 Ohm conductive paper sheets from just pencil leads and 40 % H2O2 and a bit gylcerin...
Hey, thanks for the informative video! Just to clarify, you're using non-conductive epoxy right? If so, why does it still work? Also, are there any major modifications that will greatly improve the power output?
Nonconductive epoxy, it just connects carbon to the current collector. Sure there are ways to improve the output, this is just our first most primitive configuration. For example using more specific fuel, such as food waste or bringing electrodes closer.
Thanks for your reply! I know that the bacteria create a biofilm on the surface of the electrode, and the other bacteria transfer electrons using nanowires/mediators. But how do the electrons get passed from the biofilm to the electrode?
For example Escherichia coli can excrete hydroquinone derivatives through a highly permeable outer membrane, which act as mediators to transport the electrons between cell and electrode.
+chemicum Thanks for the reply again! Since the activated carbon is stuck on the stainless steel mesh using epoxy and the epoxy is not electrically conductive, would it be better if we used an electrically conductive glue, such as a graphite based one? Similarly could we use something more conductive than stainless steel? You mentioned that we shouldn't use silver based epoxy because the bacteria "don't like it". Would you mind elaborating on that?
Activated carbon is used to collect organic waste in water filter. Here it is large surface area inert electrode where anode or cathode reactions take place
A few hours, then it was left overnight disconnected. Like an evening/night reading lamp. Next day again. The porous carbon partially acts as a supercapacitor so if discharged it gives a few hours much higher power than bacteria can produce real time.
Thats just what I expected, the bacteria itself will only produce a few uA, but because of the high porosity of the activated carbon (3km^2/g) it wil act as a capacitor with very high capacity, reduce the internal resistance to a few ohms and you could get more than one amp out of it, but poorly reducing the resistance so much will totally kill every living organism inside the soil
Have you any idea on how to improve the performance significantly without making this whole thing complex and without a strong oxidant such as sodium hypochloride ?
chemicum Thanks, your answers really help me, when trying myself. I suggested using either a salinated agar agar omnipermeable membrane or a citric acid (ctr) crosslinked pvOH membrane. Now I'll try without membrane. Oh and something for ypu to try in a future video: If you use a ceramic or clay membrane (from a clay pot) and chlorine bleach as oxidizer, carbon rods as electrodes, you get a current of 5mA, eventhough the carbon rods won't have a very high surface area. Maybe give this fuel cell type a try in your next vid?
Hi I'm just make one of Microbial Fuel Cell of 1 meter square in a School as a project for the children. They ask me how to make all the proces, like you. So I can understan all the proceses that you teach, but I have a dout about the actived carbon. Is better buy a active carbon or is "possible" buy a charcoal as the charcoal BBQ, as we can see in minut 1.116 on the video, and make actived carbon. Thanks for the amazing video
We tried once with barbecue carbon, but it did not work. It has too low electronic conductivity - this can be increased by heating the carbon in CO2 atmosphere at 900 oC. But we gave up and used activated carbon from water filter. Good luck
Hi, Excuse me, but I need make other question. There any problem if I do not cover the jar and leave it exposed to the elements. Can It affect to voltage?. Thanks very much.
bacteria need air but also damp conditions, thus we closed the jar, but made a few small holes for letting air oxygen in. If you don't have any lid, the mud may dry out and also there can be a smell problem
Ty. Can u guys help me ... I’m doing my project on mfc on wastewater ... can you help me in setting out objectives for my project plz plz I need help . Main objective and specific objectives plz help me out I’m stuck And I need to know about some mediators and in which chamber we suppose to add mediator plz guys I need you’re help. Plz 🙏
The microbial fuel fell works 1 year without changing fuel. However, it gives maximum current and voltage during ~2-6 hours, then it should be disconnected for 1-2 days to get back high voltage.
hey. just want to thank you. i have produced 45 mfc, rated 0.43V-0.72v, current at 1.2mA-4.53mA only. Though, Ihave to add 20mL of water weekly, compared to your 6 months, because its very hot in our place now. Anyway, i tried to charge my phone using 12mfcs in series and it charged from 83% to 85% only for 31minutes.
It was. Its tiring whenever i add up 20mL of water for each. May i ask the factors that helped increase in voltage? And why my current rating are not the same for each?
Sir I saw one video on MFC in that I saw like he connected battery (regular battery AA battery) in anode chamber and why is that for ? Connected in the sense one end of the wires were connected to battery and other ends ( positive and negative) were inserted in anode chamber... why did he do that and he said it was to stabilise the bacteria in what way this gonna work ? Plz do reply ..🙏
we tried your awesome experiment sir, we have only 740mV and Short circuit current of 1.40 mA in a single element. we used peat soil and waste water from pig manure. . . . please help us to increase the current :( . . .
chemicum, greetings among the highest, we used stainless steel mesh, coated with activated carbon and clear epoxy glue sir, by the way carl jameson is my teammate. sir, we humbly need your advice for this project, how can we make the current higher.?
How long have it been working already? Can you see the upper electrode - is it fine, no rust on current collector? Distance between the electrodes, is the mud/wastewater mixture wet enough?
Sad to say sir, its not working, we first contruct 2 months ago and the results is given above, the distance between the electrodes is 3cm. And 1cm from the the bottom. It is wet enough until now it is wet sir. Another is that when we try to test the experiment the current drops so fast.
The first few seconds of these video are very important.
awesome awesome awesome ... great work people
You should try powering some 230V equimpent with that power station.
I'm very impressed you managed to get the sparks back into the cable ;-) you elbonians have too much time on your hands.
Development took a lot of time, assembly was just one day
best channel ever, i love this kind of chemical experiment especially like the gallium one
thanks, such comments push me making new experiments
Incredible concept. Amazing execution. This video is extraordinary.
Hi, this is a great experiment!! one question, were anodes and cathodes manufactured using catalyst over the mesh? thanks a lot!!
This was catalyst free activated carbon (superaccu.com).
SOMEONE GET THIS TEAM A NEW PAIR OF SCISSORS STAT
Awesome video guys, thank you, I hope once the Elbonians will take over the world!
Nice work, thanks for sharing. It's even easier if you use a single container with graphite felt for anode/cathode.
Gary McKinnon but this version has much higher power
@@chemicum Yes, good point.
Still note worthy @gary lol
@@gunnarthesavagedangerous6164 :)
Each cell provided 0.8 v at 0.13 Amps? That’s awesome
Still, 13 mA and it was short circuit current. Optimal performance is rather 500 mV at 3 mA and not continuos.
hello, may I ask why did you use same metal conductor for anode and cathode? are there any significance?
If the metals were different then it would behave as a battery
@@chemicum thank you sir :)
Congrats for the work! at 2:46 I was wondering why do you have the mesh in water before placing it in the mud? Is this just water? thanks
Hi. The idea was to use deoxygenated media for the anode so it would start working faster.
@@chemicum nice! Well thought out. You obtained a good amount of milliamps for a MFC I was wondering if did you measure the resistance of the mesh with the glued activated carbon by any chance?
it is a few ohms
What kind of epoxy did you used? Can I use a all purpose structural adhesive epoxy?
sure
Hi, we are doing a project like this. Did you guys put a whole on the cover in order for the oxygen to come inside the container?
yeah, there are some small holes
Thank you for the fast response! Is it okay to use charcoal instead of activated carbon?
@@joandarliemangolare4632 carbon must have good electric conductivity
I'm just wondering, do you think you could put a huge anode and cathode underneath a garden or inside a garden bed, and be able to collect energy?
It could work, however in some season it could be too dry or too cold to operate.
Sir, can you turn on a 100 watt incandescent lamp? 🤔
No, it is banned in EU, we must use LED lights instead
there are some holes for air in the MFC? if yes where? thanks!
Jakidofly holes are near wire outlets
hello, do we really need to wait 2 mos. for it to provide power?
depends, some MFC systems may run at full speed after a day.
@@chemicum oh okay, and may I ask if the activated carbon is just the same as activated charcoal? do we really need it to be able to make the mfc light up a light?
Would it be possible to generate energy using molds? They are very persistent.
Perhaps. I noticed that when mold formed in some of our cells, the voltage was in fact negative.
is it possible to test a single bacteria using the method and replacing mud with agar instead?
Mahmood Hamed sure
@@chemicum hmm.. it sounds like a complicated method to use, but can you describe how you would do it instead of using mud and just agar. I personally faced problems, pouring the hot agar on top of the anode because it will kill the bacteria on the first layer of agar.
Haven't done it actually, but maybe agar can be added without heating
@@chemicum one more question, why did you put the mesh with activated carbon in water?
Hello, im doing a proyect about this subject and i want to know, because i read that you can not connect them in series because that generates reverse voltage, but can you connect them in paralel and obtain bigger current?
And if you know, is there a way to avoid the reverse voltage?
Thank you
better connect in series like this +- +- +- as one cell gives only low voltage which even cannot light a LED
Is ther any substitute for epoxy glue?
probably there is as neutral media in MFC is not very corrosive chemically
@@chemicum what specific type of epoxy did you used?
does not matter, I have used 5 different epoxy types
Do you know what pressure did you compress the anodes and cathodes with the hydraulic hand jack? If not was there any other indicator that you used to know when to stop pumping?
12ton, pressing as strong as possible
Any Ideas how to improve the performance? Maybe use a sodium acetate mediator, higher salt concentration, addition of extra carbohydrates as food???
Yes, all this works if used not too much. High salt concentration etc tend to like for methane producing bacteria, which reduces efficiency of mfc
How much power and current density you reached in this experiment? Did you experience any problems with your configuration, putting cells in serial mode? Were the cells stacked? I would like to read your works, are you registrered on researchgate?
I'm working with microbial fuel cells too, it's an exiting field!
max values are shown in the video. Serial mode works for shorter demonstration experiments, no data yet published for long term experiments
www.researchgate.net/profile/Tavo_Romann
Hi, is it okay to use epoxy resin?
depends on what you use it for
I'm going to use it on the aluminium mesh in order for the activated carbon to attach. It's so hard to find epoxy glue in our place. So we're going to use epoxy resin or is there any alternative for it?
Watch my aluminum-air battery video as that what it is going to be with aluminum
Man, thats amazing. What are you studying ? this cells in bigger scale can be storaged and used as emergency power cells (alternating them every couple of hours for max efficiency) to light up several LEDs ? Keep it up, nice work
electrochemistry
How long did the MFCs work? Don't you need some kind of catalyst for the cathode reaction?
good double ~9 months. Porous carbon cathode without catalyst works well as bacteria anode ain't very powerful anyway.
Great job. This was hilarious!
why do we need to cover the stainless steel mesh with activated charcoal?
to increase surface area
@@chemicum thank u sir, and may I also ask why do we need to increase the surface area?
@@ishimiyaki3904 More surface area means higher reaction rate. Secondly, bacteria like carbon, but they won't create biofilm directly on stainless steel.
@@chemicum thank u so much!
please make more video about microbial fuel cell and did it still functioning now ?
These work and produce energy right now, even after 1.5 years, Only some needed additional water to be added.
Wow.. Great idea on energy... And i give A+++++ on your Video. and with good humour!!!! so funny.
why do we need to compressed the aluminum mesh w/ activated charcoal? is that necessary?
it is stainless steel mesh. We need electrical contact
@@chemicum thank you sir chemicum, have you released research papers regarding this project? and how did you connect the light to the wires?
@@ishimiyaki3904 no paper yet. Stainless steel wires were connected to ordinary electronic sockets, where wires of LED can fit easily.
@@chemicum and may I also ask sir if one container is enough to light up the LED light?
@@chemicum thanks for the response, we are working on this project, it's a great help
carbon particle size should be bigger ?
brilliant! You guys rock!
Love your work! But why don't you need a proton permeable membrane?
James Webb 3cm layer of mud acts here as a proton-conducting membrane
amazing.
I've made a fuel cell exactly following your technique - thanks for the excellent video/instructional. The anode and cathode technique worked perfectly and I am getting a good amount of current (100mV) from very small cells. I have one last question: Why does the lid needs to be on? Won't that limit the amount of oxygen getting to the cathode? I am unsure whether to have the lid on or off. Many thanks again, James
James Webb good work. The lid limits the cell drying out, there are three tiny holes only for letting oxygen in.
Making a PMFC though would be more sustainable since I believe the MFC would evetually run out when there's nothing more for the microbes to eat. Having a plant giving them nutrients will make it go on indefinite as long as the plant lives.
may I ask if we can use aluminum mesh instead of stainless steel mesh? the stainless one is quite hard to find
No, then it will be aluminum battery -see my other videos
wow that spark! is that real?
Can make plant microbial fuel cell
?
Hey, how much power density could you output when conecting all those individual cells?
Hi.. I'm also doing my research in this area.. I have some doubts in this work.. It ll be helpful for my research if I get a reply from you ppl....
Which kind of MFC is this? I mean single chamber or dual chamber..If ans is anyone of the above which one s act as a proton exchange membrane here..? If not, can we call this as a membraneless MFC...? Can we propose this like that..?
My main que is requarding proton exchange membrane.. Thank you..
this one here is membraneless one chamber MFC
@@chemicum thank you sir.. I read many papar for membraneless MFC.. All use some cheaper material r some direction change for that... Can we propose this as a membraneless MFC sir? Do u have any paper for this reference?
olá saudação aqui do Brasil !!
bom trabalho estou fazendo uma bateria parecida... só que ao invés de bacterias estou usando uma proteina e células orgânicas para quebrar a molecula dágua em um processo bioquimico e assim liberar os eletrons contidos na água !!
vejo que o grande problema dessa celulas MFC é que a lama dela é pobre de ions,vc teria que usar uma solução eletrolitica que n fosse caustica e nem corrosiva, para ionizar a lama !!existem eletrolitos de celuals HHO que solucionam esse problema pra vc !!
yeah, salt addition and other optimizations should improve performance
@@chemicum só que o sal comum mata as bacterias !!
vc usa essas celulas microbianas como um power bank correto??
Hi...it's really a amazing project...I have a query that...in most of the videos on TH-cam regarding MFCs seen that the using of Power module to increase (step up) voltage is that really necessary??..have u used any power module??
subhabrata banerjee I have. Let's say that for a single cell it is needed as voltage is too low for most applications. For multiple cells connected in series the step-up converter can be omitted like in this video
@@chemicum thanks a lot for your valuable quick reply....I just want to know what is the volume of mud you have used for a single cell??..
I think it was ~0.3L
@@chemicum Sir I know I am disturbing you..but you are so helpful I never found someone like who replied so promptly...it made me more enthusiastic...Sir.. can you suggest what type ultra low voltage power module can be used to light up one single normal led (3mm)...
Can you explain, what is the role of microbes: a)in electron releasing process or b)in electron consumption process or c)in both
microbes participate in the electron releasing process, but may also indirectly participate in the electron consumption process at the cathode. For example bacteria oxidize hydrocarbon to acid and in acid media around cathode the oxygen reduction potential becomes more positive.
How do you describe the process (mechanism) of releasing electrons in microbial fuel cell? And what is electron consumption process?
+Abu Simbel cathode reaction: O2 + 4 H+ + 4 e− = 2 H2O
Simplified anode reaction where (CH2O)n is some hydrocarbon:'
(CH2O)n + n H2O − 4n e− = n CO2↑ + 4n H+
Can you do a seperate video of single cell construction in very clear steps? Explaining why and what each step does, where the electrons flow, so that anynody can try it out. Also out of curiosity how many cells are in the elbonian power station and how much current is produced?
Individual cell assembly, why are the cathodes in water and the anodes not, why are both not two dissimilar metals and carbon, what percentage mud to waste to wastewater was used, what improvements can be made? We need more videos on these! :)
If you look it in PC, some additional explanations on video can be seen. We may do a new video with revised construction in the future.
The nr. of cells in Elbionian Power Station is a national secret:)
+chemicum Can we at least know the power output of the national elbonian power station? What can you power with it? What about a tv or some ridiculous things? It'd be cool to see just how far this can go. The more extreme, the more views, the more ad money for elbonia's GDP to grow and make more crazy things. :)
+chemicum Can we at least know the power output of the national elbonian power station? What can you power with it? What about a tv or some ridiculous things? It'd be cool to see just how far this can go. The more extreme, the more views, the more ad money for elbonia's GDP to grow and make more crazy things. :)
Well, you can calculate it, fill the building ( dimensions can be assumed from the video) full of 400 mL mfc-s.
What specifically type of epoxy did you used? Thanks,
Also what's the fuel for in the first place
Good day. We made 10 chambers, using wastewater and produced almost 2V and a current of 1.2 micro amps only. Can you help us, what can we do to increase the current? thank you. Your reply is much appreciated.
charelle maglipon there are so many factors, describe your tech more
chemicum good day sir. We used typical wastewater from creek. We used the same electrodes, the only difference is that the spacing between two electrodes is quite big ( 20cm ). We are worried because we think that this design might not be suitable to the bacteria that we cultured.
chemicum we did not mix wastewater and soil. What we did was get the soil below the creek and used it.
20 cm sounds too much, internal resistance becomes too high, I had 4-5 cm as optimal. Also, it depends on the quality of the electrodes (any pictures of the sytem?) and it usually takes 1 to 8 weeks to get the voltage and power up
Can I see this your research journal??
AWESOME! how did you insulate the wires from the stainless steel mesh?
Heat shrink tubing
Thank you very much. It is indeed in a great timing as we are on a verge of creating a renewable source of energy to lighten up the world of the AETAs ( are an indigenous people who live in scattered, isolated mountainous parts of the island of Luzon, the Philippines). They can't afford to pay electricity that is why the local electric company doesn't invest on highland transmission for them. They have clean water supply yet no lights to guide them at night. I believe that you can greatly help us.
Btw, do we need to bake (100 degrees Celsius) the electrodes?
Otherwise glue hardens 8h at room temperature. Just to quicken up making of electrodes.
What do you mean by "The anode was pre vacuumized to remove oxygen" ? Thanks
sir does amount of water affect if we are going to use pure manure and soil as feed of mfc
does moisture content needed?
Hi, it must be quite liquid, but additional water collect on top of electrodes and can be poured away later. However, pure manure might not work well due to heavy gas evolution, suggest using mixture instead.
what minimum amount of water is needed or does any amount of water will do?
another thing sir, we are going to charge a battery how we can calculate the charging time since current output of the mfc was not constant? does the formula charging time=(mAh/mA1)+(mAh/mA2) where mA1-inital current and mA2-final current
just make the fuel as liquid as fresh honey
is it possible if we use foodwaste instead of dirt?
sure, best is to mix dirt and foodwaste
hi again! can i ask how did u connect all the wires to the LED? did u use another material?
and can we use aluminum mesh instead of stainless steel?
@@stem1203-mijares-vc4lo titanium or nickel wire
@@stem1203-mijares-vc4lo No, look my aluminum-air battery video
Do i really need to use activated carbon or ordinary carbon from rice husk is okay?
Depends, the carbon must have good electronic conductivity
@@chemicum is it okay just buy the acticated carbon from medical sources?
@@isaacfontaron245 Probably, here we used activated carbon for water cleaning.
@@chemicum unfortunately I cannot find.any stainless mesh in our area that is why I bought an aluminum one (the spaces of the boxes are wide). Would the aluminum and the spacing of the screen affect the bacteria or the current? Also, the activated carbon that I bought is a fine powder
@@isaacfontaron245 with aluminum it will be a short-lived aluminum-air battery, check my other videos
Is it necessarly to use mud or can I use agar instead?
sure, just mud is cheaper
@@chemicum Thanks man, it's for a science project, but can I use aluminium mesh instead of stainless steel mesh?
Nope, it would be an aluminum battery - see my video about that
@@chemicum Are there other mesh that I can use instead of stainless steel mesh?
I don't want to be annoying, but another question, is activated carbon necessarly, if so why? Thank you!
Can we substitute both anode/cathode with layered aluminum foil/steel plate? Apart from corrosion/oxidation, is there any reason to solely choose carbon?
no, Al corrodes, steel corrodes (stainless steel can work). Carbon has high porosity and does not corrode. Substitute can be porous nickel or platinum, but expensive and bacteria may not like it.
How much current will you get from a single cell???
13 mA is initial current but it falls in time depending what load is connected
Hello,
What's the process to make vacuum for the anode? What materials did you use?
Thanks!
Use vacuum pump or a good vacuum cleaner and a homemade chamber filled with water. However, this step can be omitted
chemicum OK. I got it. So you have to dip the cathode into water and the anode seems to be dry, right? Do you think mixing salt+water could bring better results?
Vitor Gonçalves bacteria don't like too much salt
When you testing voltage output (3.49), how to get electric AC (Alternatif Current) from your research? Are you make paralel DC and you converted to AC with inverter?
You need some electrical circuit to do it. However, low voltage converters have low efficiency, therefore it is wise to connect a few cells in series to get at least 1.2 V and then use a step-up converter.
@@chemicum Can I request your contact person to discuss about journal you used in this experiment?
Because I'm also doing the research..
Can i request your contact person?
This work can be cited as Tavo Romann, Microbial fuel cell - DIY Elbonian style, https.....
@@chemicum can i get link of that site
what alternative can we use if we don't have the thing that compress the stainless steel mesh? thank you
Alternative pressing methods - using vices or something really heavy
@@chemicum if we are to check the voltage that the device is providing everyday, can we remove the LED light for a while then just attach it again just so we can check the voltage using a voltmeter?
@@chemicum thanks for the replies, really helpful ^_^
yo, is the last part real? Just wondering, I'm looking forward to making a similar project
We made many cells indead, but for a power station it is not enough of course
@@chemicum oh I see, thank you for your response. Also, could you guys give me some more details about the anode and cathode? I you are selling those but I really don't have much money to buy it and It would be nice if I could make one myself, Just wanted to know if it's just a regular mesh smearred with epoxy to glue the activated carbon, and why is it pressed, it is possible to turn on a arduino? thank you in advance. sorry for taking your time
@@chemicum I'm really impressed with the job, good luck
@@asvarius8760 The microbial fuel cell cannot directly power electronic toys - there should be voltage step-up converters and small battery that is charged from MFC
@@chemicum thank you for your answer
Hi, your work is very great! may I ask the overall voltage when 20MFC are stacked in series? Also, why you didnt include a membrane/separator?
The best cells are 800-900 mV, but at maximum power, the voltage is about 300-400 mV. So, 20MFC in serier give 16 V at OCP, but 7-8 V at maximum power.
Its a membraneless design - mud acts as a separator here. Membrane-based MFCs can deliver better power performances, but bacteria like to eat membrane too and the lifetime is not so good then
wow! thank you so much!! I've been studying about MFC for months and my aim is to produce 10-50Volts. Can you give me advise to efficiently reach my maximum goal?
The method shown in this video is probably the easiest and cheapest, but probably not the most effective - catalyst/membrane/special bacterial cultures can increase energy/power density a lot.
Yea, i must admit thats true and morelikely i might refer my project to your work. Thanks a lot. I just have more questions please bare with me. Did you use any substrate to increase bacterial activity?
Could this work with standard brewers yeast and sugar to make alcohol and a voltage at the same time?
It is good idea and might work but in this case the electrodes should be separated with a membrane to prevent alcohol diffusing onto the cathode, where is oxidizes
Do you need to connect the wires sticking out of the MFC container for it to produce power or do you just leave it as it is and keep it open (unattached from anything)?
It can be connected directly to produce low power or left it unconnected (while supercapacitor-like electrodes gain charge) and then connect to gain higher power and voltage
@@chemicum Ohh, so that's why when I made 6 mfc and the volts of each is ranges from 0.015-0.024v and amps is 0.02mA - 0.08mA even though two days has already passed since. I connected the wires right after it was done. I shouldve left it unconnected to charge.
@@chemicum Also, do you need resistors to be attached on the wires because I've read something online that in order to achieve maximum performance, the mfc internal resistance has to be equal to external resistance, connect different resistors and measure power output, but I dont know how that works...
In the beginning of the experiment do not connect wires, wait voltage to rise. When it is at least 400 mV, connect some load to harvest energy. Disconnect wires and wait for a week
@@chemicum it's been five days and the power output still ranges at -0.015 to 0.009 volts. is that normal? will it start to rise after a week? or does connecting the wires right after the mfc construction greatly slows down power generation?
hai can you describe the specify stainless steel ?
Have You used any proton conductive membrane? If yes, then what material it was, or membrane is not nessesary.
It is membraneless design. Some constructions use nafion membrane, but it is expensive and does not last as long as other components.
end of the video... spark
is it real power from mud cell or fake?
+Tarier york Yes, that was also my next question. Was this sparking really from the stack of Fuel Cells there in this Shed ??
if the calculation was right.. a rack of cells would generate enough amperes to make a spark, but I also wait for Chemicum to answer this question. It s very inspiring me how to power my raspberry using MFC
Japati Asparagu To power raspberry - it can be done, take 3 mW power per cell if it is connected a few hours per day.
If I use used activated carbon from water purifier elements is it still efective?
It can be probably used without serious loss to power.
I wonder, how much voltage it will give after maybe 5 days, because you only showed it after two months
Depends on state of electrodes and mud. In worst situation it gives after 5 days 100 mV, but in best cases already gives >700 mV.
chemicum Mhhh I'm sure you could increase the voltage and amperage when using Mn(IV)oxide supported activated carbon as cathode, right? My theory is, that it acts as a ORC (oxygen reduction catalyst) and therefore it prevents the biofilm forming on the cathode (not the anode, this would be bad).
What do you think? I plan using manganese dioxide supported carbon from an zinc-carbon-manganese dioxide battery, these should have 1-5% MnO2.
It could work, but not sure whether bacteria like high concentration of manganese. If it is membraneless design, some Mn can be dissolved and diffused into another electrode. You should also make a blank mfc at the same time without catalyst at cathode
chemicum Yes I'll try, thanks. I don't think that manganese dioxide forms a soluble salt in non acid envoirnment because it is nearly chemically inert, it will form very very very slowly soluble salt in low ph, but in neutral or alkaline invoirnment normally not
Agree, but in mfc the mud tend to go slightly acidic - maybe not enough to dissolve Mn
This is quite impressive. I would just like to ask where you bought the led bulb used here. Thanks!
just local electronics store, it is no special LED
Thanks, Chemicum! What are the specifications of the LED bulb? Volts? Watts? Amperes? Thank you! Trying this for a school project :)
all LED types have identical voltages (white and red LEDs are different) but they are around 20 mA
This is a very cool experiment that proves more successful than double-cell microbial fuel cells (aerated water and mud), because the small MFC's can be stacked many times, taking up less space and producing a lot of energy. I would like to ask how many watts the Elbonian Power Station was able to produce, and how many MFC's were in the power station. Also, I would like to ask was every single MFC connected together with some wire that powered something specifically?
Max power for a single cell is about 3 mW if loaded for a day or two continously. 3 or 4 cells can power a LED. There are lots of cells but the exact number is a national secret of Elbonia :)
Wow I didn't know that. Do you think of you had enough (say like 10-20 MFC) you could power rechargable batteries after 2 months (like in the video?)
Well, theoretically 20 MFCs would give 60 mW so in 20 h it would be 7.2 Wh, which could load my cell phone 7 Wh battery. Practically, it would need a special charging electronics, because cell phones take 5V and want more current (and the voltage converters consume a lot). So it is maybe, a bit larger number of MFC would work more probably. But it is a good experiment idea, I could try it also
Thanks for the help
Good day, i would just like to ask. I was planning to create single chamber MFC for my college research but im lost as to which model i should follow, a single chamber MFC or two chamber MFC. Which of those two produce more power? and from your video, why is there no PEM?
Mud layer acts as membrane. Single chamber is homemade easy construction, but dual chamber is more powerful
Ohh i see.. is there a specific type of bacteria/microbes for MFC? I'm proposing bacteria from waste material such as Poultry waste (chicken poop).
Bacteria is usually present everywhere, many types work simultaneously. But chicken boop without soil can be too concentrated - better power, but efficiency losses due to competing methane evolution by bacteria
Update: so i manage to create 3 types of mfc; poultry waste, fruit/vegetable waste, canal slurry, using your method but everyone of them has given me a unsatisfactory result. Voltage average below 100mv and no current detected. Do you any idea what could had possibly gone wrong? Really need help :(
What was current collector made of? Open lid and check is there any corrosion.
What wire did you use?
special stainless steel
@@chemicum is it okay to use a speaker wire?
I'm doing this for my project, thank you for the inspiration
no, copper corrodes quickly. it can be carbon, titanium, nickel or special alloy
Okay thank you
Hey I wanted to ask usually it takes how long for the cell to generate energy? I have done another of this with similar setup few days ago but it seems like the circuit has no current flow through. Thanks.
It takes weeks to get voltage above 500 mV. Measure open circuit voltage after every few days and do not connect a load before the cell has reached a useable power level. Then measure also short circuit current - we got maximum 8-13 mA for different cells.
+chemicum Thanks for the tips and appreciate your prompt reply so much 😀😀
hi, just wanna ask if there are other alternatives to transparent epoxy glue? incase, can i use colored ones?
no problem, the color is not an important parameter
chemicum will it do if I use all-purpose epoxy or general purpose epoxy?
does it produce voltage right after construction of each MFC? or you really have to wait 2 months to produce 300mV?
It depends on the bacteria and substrate - if it is fresh anaerobic mud, it may start working much faster. We used early spring frozen mud and so it took lot of time.
Once used as an energy source, will the energy used be renewed as time passes by?
yeah, our cells have worked more than a year and the cells still produce energy - until bacteria have something to eat. When the mud is depleted, just add new portion.
thanks for your response! Appreciate it a lot!
great video, we are waiting with bio gas fuel cell , it is possible ?
Sure is, guys upstairs are doing high temperature fuel cell that could take bio gas. But I am not sure if its possible to do it as homemade
Very well done guys, I really laughed at the guys with the clamps on their noses ! ;) LOL !
Maybe you can still give these cells some sugar to let them power more ??
Of course, these were natural materials, we did not add anything to push up the power.
+chemicum Okay, also try to put sugar into the lower part of the pot and yeast and you will probably get much more power... Hope this helps.
Regards, Stefan.
+overunitydotcom we have also tested some graphite and some graphene compositions. Stainless steel could be indeed replaced by some well-conductive carbon material. However, the price of graphene oxide is 50000-100000 $/kg.
chemicum
Not anymore expensive ...Just use the method from Stephen Dail to make yourself these cheap 1 Ohm conductive paper sheets from just pencil leads and 40 % H2O2 and a bit gylcerin...
@@oudotcom
could you give me the video link teaching you how to make this superconductive sheet ??
Hey, thanks for the informative video! Just to clarify, you're using non-conductive epoxy right? If so, why does it still work?
Also, are there any major modifications that will greatly improve the power output?
Nonconductive epoxy, it just connects carbon to the current collector. Sure there are ways to improve the output, this is just our first most primitive configuration. For example using more specific fuel, such as food waste or bringing electrodes closer.
Thanks for your reply! I know that the bacteria create a biofilm on the surface of the electrode, and the other bacteria transfer electrons using nanowires/mediators. But how do the electrons get passed from the biofilm to the electrode?
+Matthew Cheung Some bacteria produce compounds that pass through the outer bacteria cell membrane diffuse to the anode and oxidize.
For example Escherichia coli can excrete hydroquinone derivatives through a highly permeable outer membrane, which act as mediators to transport the electrons between cell and electrode.
+chemicum Thanks for the reply again!
Since the activated carbon is stuck on the stainless steel mesh using epoxy and the epoxy is not electrically conductive, would it be better if we used an electrically conductive glue, such as a graphite based one? Similarly could we use something more conductive than stainless steel?
You mentioned that we shouldn't use silver based epoxy because the bacteria "don't like it". Would you mind elaborating on that?
What does activated carbon do? I have seen it in a lot of videos
Activated carbon is used to collect organic waste in water filter. Here it is large surface area inert electrode where anode or cathode reactions take place
chemicum Oh ok. Can it be substituted by something else?
Carbon fiber or graphene, but usual activated porous carbon is much cheaper - it is charcoal, which is activated with water vapor at high temperatures
chemicum Thanks :)
Sitapatarei! Geniaalne! Aga peab ikka igav olema, et neid nii palju vorpida :D
Vahetu tegemine polnudki nii keeruline, elektroodide ja elemendi ehituse väljamõtlemine, vot see oli küll aastane töö.
How long will a led light up??
A few hours, then it was left overnight disconnected. Like an evening/night reading lamp. Next day again. The porous carbon partially acts as a supercapacitor so if discharged it gives a few hours much higher power than bacteria can produce real time.
Thats just what I expected, the bacteria itself will only produce a few uA, but because of the high porosity of the activated carbon (3km^2/g) it wil act as a capacitor with very high capacity, reduce the internal resistance to a few ohms and you could get more than one amp out of it, but poorly reducing the resistance so much will totally kill every living organism inside the soil
Have you any idea on how to improve the performance significantly without making this whole thing complex and without a strong oxidant such as sodium hypochloride ?
Oxidizers will make it unstable and will have short lifetime. Also cells with membrane tend to have lowers lifetime than those in the video
chemicum Thanks, your answers really help me, when trying myself. I suggested using either a salinated agar agar omnipermeable membrane or a citric acid (ctr) crosslinked pvOH membrane. Now I'll try without membrane. Oh and something for ypu to try in a future video: If you use a ceramic or clay membrane (from a clay pot) and chlorine bleach as oxidizer, carbon rods as electrodes, you get a current of 5mA, eventhough the carbon rods won't have a very high surface area. Maybe give this fuel cell type a try in your next vid?
Hi
I'm just make one of Microbial Fuel Cell of 1 meter square in a School as a project for the children. They ask me how to make all the proces, like you. So I can understan all the proceses that you teach, but I have a dout about the actived carbon. Is better buy a active carbon or is "possible" buy a charcoal as the charcoal BBQ, as we can see in minut 1.116 on the video, and make actived carbon.
Thanks for the amazing video
We tried once with barbecue carbon, but it did not work. It has too low electronic conductivity - this can be increased by heating the carbon in CO2 atmosphere at 900 oC. But we gave up and used activated carbon from water filter. Good luck
Thanks very much.
When we finished We show how to make for knowledge sharing with the community
Hi,
Excuse me, but I need make other question.
There any problem if I do not cover the jar and leave it exposed to the elements.
Can It affect to voltage?.
Thanks very much.
bacteria need air but also damp conditions, thus we closed the jar, but made a few small holes for letting air oxygen in. If you don't have any lid, the mud may dry out and also there can be a smell problem
Can uou recommend books or academic works about this topic?
Thank you very much!
In which water you’re soaking anode electrode ?
just tap water
Ty. Can u guys help me ... I’m doing my project on mfc on wastewater ... can you help me in setting out objectives for my project plz plz I need help . Main objective and specific objectives plz help me out I’m stuck
And I need to know about some mediators and in which chamber we suppose to add mediator plz guys I need you’re help. Plz 🙏
No one is helping me out I’m stuck in the middle now . I hope you understand my problem..
Objectives: get energy from wastewater (instead of paying for wastewater).
chemicum only one objective? Can you give me you’re gmail id
man you are smart
How long is this going to work for?
The microbial fuel fell works 1 year without changing fuel. However, it gives maximum current and voltage during ~2-6 hours, then it should be disconnected for 1-2 days to get back high voltage.
Hi i extremely curious, how can the microbial fuel cell can work until 1 year without changing fuel ? can you explain ?
hey. just want to thank you. i have produced 45 mfc, rated 0.43V-0.72v, current at 1.2mA-4.53mA only. Though, Ihave to add 20mL of water weekly, compared to your 6 months, because its very hot in our place now. Anyway, i tried to charge my phone using 12mfcs in series and it charged from 83% to 85% only for 31minutes.
good job, 45 mfc sounds like a lot of work
It was. Its tiring whenever i add up 20mL of water for each. May i ask the factors that helped increase in voltage? And why my current rating are not the same for each?
the construction - if the air holes are very small, water evaporates slower. Voltage increases in time usually.
So voltage and current is dependent to the viscosity of the water?
current depends on the salt concentration in water. But adding extra salts is complicated - too much salts is what bacteria do not like.
Thanks your share
Sir is there any difference between MFC and MEC ? Plz reply sir plz
MFC produces electricity, MEC produces hydrogen
chemicum thank you sir
chemicum sir can we use polymers in mfc? Plz help me out
Sir I saw one video on MFC in that I saw like he connected battery (regular battery AA battery) in anode chamber and why is that for ? Connected in the sense one end of the wires were connected to battery and other ends ( positive and negative) were inserted in anode chamber... why did he do that and he said it was to stabilise the bacteria in what way this gonna work ? Plz do reply ..🙏
sure, polymer electrolyte membrane is used in a different type of MFC-s
amazing
first who can see this incredible invention xD
This is hardly something new.
😮😂❤ magic bravi!
Beauty is: if you put current in, you get more microbes.
we tried your awesome experiment sir, we have only 740mV and Short circuit current of 1.40 mA in a single element. we used peat soil and waste water from pig manure. . . . please help us to increase the current :( . . .
740 mV is already something. How did you made electrodes more precisely? Any videos/pictures from cells produced?
chemicum, greetings among the highest,
we used stainless steel mesh, coated with activated carbon and clear epoxy glue sir,
by the way carl jameson is my teammate.
sir, we humbly need your advice for this project, how can we make the current higher.?
How long have it been working already? Can you see the upper electrode - is it fine, no rust on current collector? Distance between the electrodes, is the mud/wastewater mixture wet enough?
Sad to say sir, its not working, we first contruct 2 months ago and the results is given above, the distance between the electrodes is 3cm. And 1cm from the the bottom.
It is wet enough until now it is wet sir.
Another is that when we try to test the experiment the current drops so fast.
sir chemicum, any informative ideas to help us?
I tried it works
I think you need to take some time and go to inplix website to learn how to make it.
Is the same material anode and cathode?
Same material and it works.
ahahah thats so cool XD
R u from Estonia? If yes, cool, mina ka
From Estonia, sometimes külastan Elbonia
why did you cover your nose
is anything there poison or something
It stinks - the fuel is mixture of shit and mud, otherwise safe.
alvin... dude... lol
you peoples are on the bleeding edge of the future
Barrels labelled "MUD" and "SHIT" ... lol