Links to their work - www.nature.com/articles/nnano.2017.21#:~:text=Abstract,of%20common%20salts4%2C6. , science.sciencemag.org/content/343/6172/752

@VerifyTheTruth

3 жыл бұрын

What Is The Drawback To Solar Pumped Laser/Lensing Boiler Distillation Systems? I Am Relatively Sure That They Could Be Immediately Implemented With An Extremely High Benefit To Cost Ratio Using Currently Existing Technologies. It Solves Both The Pumping And The Desalination Processes Into One Efficient And Inexpensive Solution That Can Be Implemented Anywhere That There Is Sunlight, While Simultaneously Generating Energy Instead Of Requiring It.

@VerifyTheTruth

3 жыл бұрын

I Have Conceptualized Several Systems That Could Be Easily Tested With Minimal Effort And Negligible Expense. All Of The Mathematical Specifications Are Variably Dependent Upon Materials And Scale. It Would Only Take A Few Days With The Right People, Materials, And Equipment To Prove It's Value At Scale.

@VerifyTheTruth

3 жыл бұрын

There Are Millions Of People Who Need The Water Right Now, Not By 2025.

@vitordelima

3 жыл бұрын

@@VerifyTheTruth Some toxic materials also evaporate with water, but this can be filtered after you distillate. Maybe there is some affordable process to separate water vapor from other substances while it's still a gas, similar to what is used in petrol refineries.

@VerifyTheTruth

3 жыл бұрын

@@vitordelima Absolutely, Multi-Chamber Heat And Pressure Differentials To The Distillates, Much Like Crude Refineries. The Technologies, Equipment, And Infrastructure Already Exists For Immediate Large Scale Implementation Of Basic Solar Boiler Distillery Desalination. Concentrated Sunlight Can Boil Or Combust Water Instantaneously. With The Right Specifications, Mostly Any Present Chemicals Or Biological Contaminants Can Be Seperated, Concentrated, And/Or Neutralized, As With A Waste Water Treatment System. Permanent Silver Filtration Could Render The Distilled Water Drinkable After Remineralization Or It Could Be Utilized For Recharging Aquifers, Food Production, And Cash Crops. The Pumping Could Operate As A Solar Primed Siphon With Unidirectional Check Valves, Containment Towers, And Drop Points. The Salt Water Can Be Moved Uphill With Head Pressure Through Roman Concrete Or Rarefaction Tempered Quartz Glass Piping To Be Processed Down Line, Or Desalinated On Site And Pipelined Through Steel. The Value Of The Water Would Likely Far Exceed Oil Long-Term In Numberous Areas And Applications. Excess Power Generated By The Solar Boilers, Once The System Is Primed, Can Be Harnessed With Hydraulically Distributed Hydro-Pneumatic Pistons And/Or With Turbines. Apparently The Technology Also Exists To Combust Salt Water. This Is Just One Highly Generalized Solution Out Of Many Combinations Of Existing Tech.

Graphene can do everything except leave the laboratory.

@jasonmorris9330

3 жыл бұрын

there are actually graphene products out there right now. You just don't know it contains graphene

@sriharshacv7760

3 жыл бұрын

@@jasonmorris9330 such as ...

@jasonmorris9330

3 жыл бұрын

@@sriharshacv7760 seeing as how I work for a company that is implementing graphene in their products, let's just say it's in the weapons industry already

@nickolaymiltenov

3 жыл бұрын

@@jasonmorris9330 But usually we don't use weapon systems in our everyday lives...😁

@MegaIkkuh

3 жыл бұрын

@@nickolaymiltenov the statement was "it can't leave the laboratory" and to be fair, it left the laboratory, like most other new inventions, straight into weapons...

The unqualified use of "miraculous" raises my skepticism hackles.

@freddiereadie30

3 жыл бұрын

It's a clever way of saying it's a trade secret.

@jeremysimmons8864

3 жыл бұрын

@@freddiereadie30 OR a "clever" way of overselling the feasibility or advantage of a technology.

@CatboyChemicalSociety

3 жыл бұрын

honestly I really dont see how they can neatly stacked GO sludge from an exfoliation process. crosslinked epoxy is FKING HUGE so how the fk can you get such tiny spaces between the graphene oxide. im thinking they just compositized the GO with a certain percentage of epoxy which still allows it to be permeable with water then painted/pressed/rolled the resulting mix if it fking works into nice sheets for RO membranes.

@CatboyChemicalSociety

3 жыл бұрын

@@freddiereadie30 its not their paper literally shows how the membrane looks it FKING SUCKS and isnt practical in the slightest. Their active surface area is in the friggin micrometers and for it to be practical that needs to be in METERS!!

@CatboyChemicalSociety

3 жыл бұрын

@@unAgorist what about you I could say the same.

The paper is more than 3 years old; the authors focus on the tunable aspect of the gaphene membranes.

@robinsss

3 жыл бұрын

what paper?

@Lesics

3 жыл бұрын

We were in touch with this research team. They have collaborated with a UK based company, LifeSaver to convert this research into a product. Maybe in a few years we can expect it to hit the market.

@frankh.3849

3 жыл бұрын

Graphene is the way of the future. Between graphene, Neutrinovoltaic, and CO2 bio fuel conversion using solar energy and radio waves the world will forever be changed

@janami-dharmam

3 жыл бұрын

@@frankh.3849 We need to have a solution now! CO2 biofuel conversion is carried out by plants and is not the most efficient.

@frankh.3849

3 жыл бұрын

@@janami-dharmam it can be done now with solar energy and EMF in the radio spectrum. They have all ready built prototypes. They have also figured out a simple way to do it electrochemical using solar energy with the highest reported efficiency. Though the method using radio waves is the cheapest and leaves a zero carbon footprint.

"I have a probl" "graphene" "but I haven't told you th" "GRRRAAAAAAPHEEEEENNNE"

@robinsss

3 жыл бұрын

graphene : it cures all

@astrogirl7616

3 жыл бұрын

😂😂😂😂😂 totally me And I feel like I got the cure everybody.. Nanotechbology and grapheeeene

@InsaneNuYawka

3 жыл бұрын

😂

@JohnDobak

3 жыл бұрын

It's true. Now if only someone could master the manufacture and shaping of graphene.

@JohnTrustworthy

3 жыл бұрын

Graphene can do everything except leave the laboratory.

As a chemist, I really liked you included the coordinated water molecules on dissolved ions. Very nice video by the way!

@swastikbiswas8293

3 жыл бұрын

Same here.. most of the textbooks misses the solvation sphere in their explanation

@swastikbiswas8293

3 жыл бұрын

@Александр Лазарев activated carbon already exists for water filtration.. doped graphene is the next step. Even if it can't filter water, it can preferentially intercalate ions which reduces salinity too

@armwrestlersanta

3 жыл бұрын

As a non chemist I liked ur comment

@kousueki7024

3 жыл бұрын

as a non kemist, im just excited to use a future low cost graphene water filter to filter a high ppm water source..

@armwrestlersanta

3 жыл бұрын

@@kousueki7024 chemis

The value provided for the salt rejection of salt in conventional RO membranes does not represent the state of the art. For example, DOW Filmtec model SW30HRLE-400i is rated for a minimum of 99.65% (cited from its data sheet). However the video attributes only 90-95% to conventional RO membranes. The authors of the paper cited in the video found the the GO membrane could provide 97% salt rejection, which does not surpass state-of-the-art high rejection membranes. In the Nature paper cited by the video, it seems the authors are more excited about the tunability of the GO membranes which may open up opportunities in other filtration applications.

@davidmende3409

3 жыл бұрын

Donno mate - the drastically lowered energy requirements kinda seem helpful - but maybe thats just me.

@alanwatts8239

3 жыл бұрын

I think it is safe to say you would still get more use out of graphene filtration.

@jeremysimmons8864

3 жыл бұрын

@@davidmende3409 You should check out other comments. The "lower energy requirements" has been discussed thoroughly and the conclusion seems to be that that is a false. I don't even think the video, or the scientific papers this was based on, claim that the GO membranes have lower energy requirements for filtration.

@jeremysimmons8864

3 жыл бұрын

@@alanwatts8239 why? It's not obvious to me why you would make that conclusion. What are the mechanisms that prevent us from getting use out of either one? What is the difference between the two that creates a difference in their longevity?

@seanrossouw9936

3 жыл бұрын

Agreed, that stood out to me too. They also do not list the standard solution this rejection is measured on, or explain WHY the energy requirement is lower. Osmotic pressure must still be overcome.

“What is now proved was once only imagined.” -William Blake

@burnerjack01

3 жыл бұрын

"There's a sucker born every minute."- PT Barnum

@robinsss

3 жыл бұрын

@@burnerjack01 no tricks here

@Hgulix62

3 жыл бұрын

no shit

@duckduckgoismuchbetter

3 жыл бұрын

@@burnerjack01 "There's a scientifically illiterate fool born every second." - Me -

I've been waiting for this to be perfected. It has been aong time coming.

you'll still have to pump there will still be osmotic pressure this would just be a better RO membrane ...

@lamebubblesflysohigh

3 жыл бұрын

Yea but if it is better enough, it may become viable on large scale. Maximizing the amount of water flowing through the filtration medium while minimizing the required energy is the key.

@Ralphgtx280

3 жыл бұрын

@@lamebubblesflysohigh it being tuneable may be an advantage but really the amount of energy is is a function of the osmotic pressure + the mechanical losses. The osmotic pressure is unchanged and there is no indication of addressing the mechanical losses. Its like pumping water uphill , correctly sizing the pipe and making it as straight as possible with as smooth walls as possible will minimise mechanical losses but you will never be able to get water up a hill with less energy than the added gravitational potential energy.

@purplepotatoes9255

3 жыл бұрын

@@Ralphgtx280 if you were to put the filtrated water below the salt water, would osmosis come into play? Like, if the graphene sheets were too be put above vats, instead of right next to them?

@victorhopper6774

3 жыл бұрын

@@Ralphgtx280 trees think different.

@jokers7890

3 жыл бұрын

@@purplepotatoes9255 Good idea, but no, its not enough pressure, and that IS the problem....RO takes very large amounts of pressure to work (which requires ALOT of energy to create this pressure). The mass of water used in RO does not create this high pressure. And let's say we use the entire pressure of a deep ocean.....this would work, but the problem then is how do you get the clean water back up to the surface? This would also use the same amount of large energy. The point is that energy conservation laws apply to all forces, including pressure. You cannot overcome the energy differential with pressure.....the energy to break the bonds is the same either way. This has to do with the profound properties of water itself.....so the same reasons that make water the source of all life, is the same reasons why it is difficult to get clean water. This is also why the earth's ecosystem is very complex in cleaning water. Final conclusion: Humanity cannot overcome the scarcity of energy until it overcomes the entire capitalist system. Only socialism as a path to communism will allow humanity to have a surplus of energy. There literaly is no scarcity of energy in the universe, it is the capitalist system that creates a scarcity and forces humanity to rely on self-destructive toxic fossil fuels for energy. Go humans! Good luck.

I love the way you explain the concepts.

I love New Inventions like these !! Desalination is the future as more and more population grows and ground water resources won't be enough for all of us. Technologies like these really will help in decreasing the per unit cost of filtering it and making it available for masses.

@Lyf4rMusic

4 жыл бұрын

@@thealienrobotanthropologist Yeah, good luck convincing that to Billions of population around the world. So, it's better to prepare for worst-case scenario when we have the time :)

@renatoigmed

4 жыл бұрын

@@thealienrobotanthropologist I am one of those who will never have children. if it were up to me no one would have it for the next 30 or 40 years.

@robinsss

3 жыл бұрын

@@thealienrobotanthropologist ''''''''The future is learning to not have more kids that you can afford to take care of.'''''' wrong the future is using logic and advanced technology to conquer our problems and continuing living life without having to worry about whether we have enough resources

@simplespecial3313

Жыл бұрын

​@@robinsss he is sterile

@CountingStars333

3 ай бұрын

Populations arent growing except Africa.

Nano engineering is so unbelievably profound. Not many amateurs can tune the really expensive equipment. Yet.

I remember learning that ions dissolve via ion dipole interactions (intermolecular force). Thus there is no sharing of electrons and not a covalent bond. This should be fact checked. (4:06)

@Wilewee

4 жыл бұрын

It's clearly an error saying the salt-to-water molecules are covalent. As you say, it's an ion-dipole interaction that binds them together. I dont't know about the strength of the bond, but I'm sure it's stronger than water to water molecule one.

@luka7383

3 жыл бұрын

It's a bit more complicated then that. When water (or any other ligand) complexes with an ion, there is actually bond formation, It's not just electrostatic interactions. You only learn about the ion-dipole interactions because they are simple physical forces with which we can easily explain and calculate attraction between ions en dipoles. Metal-water coördinated complexes are easily formed however I don't think anion complexes are easily formed. Nitrate, sulfate, chloride - water interactions are mostly ion dipole interactions i think.

@kahlilstoltzfus6517

3 жыл бұрын

@@luka7383 This is very informative. Thank you for this response!

@halasimov1362

3 жыл бұрын

Because maybe, you're gonna be the one that saves me And after all, you're my van der waals

I am a materials engineer. The possibilities of new materials with new properties is virtually infinite.

@dosmastrify

4 жыл бұрын

I am not a meterials engineer. The possibility of new materials with new properties is virtually infinite.

@JC-yb3zb

4 жыл бұрын

@@dosmastrify I am not a troll. The possibility of new materials with new properties is virtually infinite.

@dosmastrify

4 жыл бұрын

@@JC-yb3zb you just won the game

@JC-yb3zb

4 жыл бұрын

@@dosmastrify I'll be here all week.

@user-sw7hc8vd7m

4 жыл бұрын

But why do molecules go only in one direction through a graphene filter? Does osmose afraid graphen?

I have a simple question: won't the salt clog up the entry point and prevent water going through?

@MottyGlix

3 жыл бұрын

In many filters, you commonly clean them by running cleaned fluid (here, water) backward through the filter medium and washing away the concentrated captured stuff that you are filtering out.

@markplain2555

3 жыл бұрын

@@MottyGlix correct - that I know - can you do it here with this material,p? I always knew about (what you said) and to me it was the critical question that first needs to be answered before we can seriously consider this material as a filter.

@markplain2555

3 жыл бұрын

@Inotamira Orani I have actually been involved in water & waste water treatment. I can tell you the devil is in the detail. What often seems technically obvious often is practically impossible. In summary.... Let's see if someone gets this right.

@tomatrix7525

3 жыл бұрын

Mark yep. Generally these filters must be replaced or cleaned. They last for about 24hours of use. They slowly loose efficiency over that period as more and more salt clogs the entry. They are usually cleaned upon reaching 30% efficiency in resoect to thr original non clogged 100%. As I said, this typically occurs after 24hours of use, assuming typical salt concentrations etc...

@zachass3724

3 жыл бұрын

The video starting at 5:00 explains your question.

This is the most amazing computer generated voice I have ever heard.

@ChrisTopher-jv6ex

3 жыл бұрын

it's computer generated?

@matterisnotsolid8295

3 жыл бұрын

@@ChrisTopher-jv6ex Yes. Can't you tell?

@superwassou

3 жыл бұрын

How can you tell? 🤔 Sounds real to me.

@jammapcb

3 жыл бұрын

its real

@matterisnotsolid8295

3 жыл бұрын

@@jammapcb yes as I said it is a real computer generated voice

One of the brilliant videos I've had to watch on this subject. Thanks for it.

Oh wow it's really similar to the process for constraining electron flow in silicon laminate layers. Way cool.

Finally, a new video... after weeks....

Good impressive innovation. Thanks for the video Sabine !

Not real until they do the classic cooking show trick of "And here's one I prepared earlier"

Graphene stepping in another usage

This should be more talked about on TV. Instead of showering us with negative news and statistics the media should offer us something positive as this.

Thank you for making the video.

Wow wow wow wow.....!!! Just stumbled upon the channel and I love it

Excellent news and good explanation, cheers!

Human ingenuity is a beautiful thing!

I just got back from the future. Housing developments along the coast are up in arms over the dumping of high concentrates of saline into sewer systems.

Thank you Dr James Tour

Build it!! I can tell you, I feel and taste the difference in water quality from northern and southern states. This would benefit me a lot

Thank you so much for teaching me this. I have a question though: do we have a way of handling the brine that is produced from the salt molecules left over on the other side?

@NaturallyCreeAtiveDOTca

2 жыл бұрын

Save it for winter, road salt.

I worked in a lab with a need of ultra pure water. Salts were the easy problem to fix. Colloidal silica was the SOB in that world. It has a nasty habit of fouling up deionizing and or filtration media and if it gets through that it fouls up lab machines. I first encountered it when washing windows at my restaurant job 25 years ago when i was in college. The s*** was caked on the window and vinegar wouldn’t touch it. Colloidal silica binds to surfaces and can’t be cleaned off. So the question is: “How does this system react to colloidal silica dispersed in most water?”

@ix-Xafra

3 жыл бұрын

We need silica for collagen formation, don't we?

@joefromravenna

3 жыл бұрын

@@ix-Xafra yes we do. And different municipal water supplies have different levels. It’s necessary in biology but often rather damaging in industrial settings.

@ix-Xafra

3 жыл бұрын

@@joefromravenna is silica abrasive when in colloidal solution?

Who else love this Chanel

This is revolutionary. The Australian state governments are not utilising our current desal plants fully because of the very high running cost and recent rain. Droughts are common and can last for up to 7 years in a number of regions. Can't wait for this technology to be commercialised, will definitely buy a small unit for the home.

Since Graphene is such a wonder material at the nano scale, I wonder what other elements could be tuned in this way to achieve similar seemingly miraculous use cases. Perhaps a room temp superconductor could be made from a common conductive element in a nano-structure... etc.

A insane material...hope so that I could work with it later

I live in UAE...for Arab countries this is a welcome technology for its bright future...good animation, thanks for the video

@deusexaethera

4 жыл бұрын

Israel has already reduced the cost of traditional RO filtration to a price of about 1 USD per liter, which is less than the cost of bottled drinking water. And Israel's method doesn't rely on experimental filter materials that can't be mass-produced yet.

One major small problem this video does not address at all. Graphene Oxide is currently like $250 per gram. It is currently way too expensive to even approach replacing reverse osmosis purely to save on power.

@duckduckgoismuchbetter

3 жыл бұрын

The cost is coming down rapidly.

Sunlight and vapor collection seems to be the most accessible way to desalinate water.

Very interesting. Excellent video. Hopefully it is practical.

A lot of technologies are now being experienced by researchers but the transition lab-industry is still the biggest challenge.

@jokers7890

3 жыл бұрын

not really.....the problem is capitalism, not research.

@akeiai

3 жыл бұрын

@@jokers7890 no, its not capitalism, its the viability of it when it comes to mass producing it. More often than not, research results show great success, but the way it is created makes it pretty unviable/expensive when it comes to making it available to all people

It would be good to put link to the paper discussing the new technology. DOI or something connecting discovery to the authors. Really awesome video.

@Pikminiman

4 жыл бұрын

+

@Thedamped

4 жыл бұрын

the paper is now linked in a pinned comment

It's a great application that has been around for some time, but the one thing people keep getting wrong is the energy of desalination. Current desalination filters are just about as efficient as thermodynamically possible. The energy it takes to remove salt from water is a fixed quantity. Even some researchers have made mistakes, claiming that graphene desalination could lower energy requirements by several orders of magnitude.

@specialopsdave

3 жыл бұрын

It's the pressurization, not the actual osmotic efficiency, that leads to savings. Lower pressure means thinner pipes and weaker pumps, meaning less expensive ones.

The US airforce already has a patent on this.

I don't know who reads the script but after replaying ME I find myself watching these vids just because the way they are narrated.

Informative presentation!! What will be the salt rejection of GO based membranes and permeate recovery?

Im looking forward to this tech's industrial application soon!

sounds great, when can I get it for my home? How often do you have to change the filters for a home sink?

Hi👋,I really want to know what the program used to have this amazing animation?

I love this channel.

First heard about it in the year 2016 It will be revolutionary thing for Mankind !!! It will make many impossible things possible It's just amazing!!

@adilchoudhury4249

3 жыл бұрын

What is the solution to uncontrollable population growth in India?

@rxshivamgamer8135

3 жыл бұрын

@@adilchoudhury4249 kill people

@adilchoudhury4249

3 жыл бұрын

@@rxshivamgamer8135 wow aren’t you a harsh one? Mankind hmmmn, expensive word there buddy 🧐

@rxshivamgamer8135

3 жыл бұрын

@@adilchoudhury4249 Basically it was tit-for-tat

@adilchoudhury4249

3 жыл бұрын

@@rxshivamgamer8135 tit for tat, whoa such a tough guy? Are you tough like that in the streets? I asked a reasonable question, I don’t understand, how that amounted to “ tit for tat “, wait, aren’t you a Gandhi though 🤨

I don't think you can bypass osmotic pressure this easily, entropy is a hard to beat sonofagun. You'd still need pumps, otherwise this would break the second law of thermodynamics.

@charlesbray8109

3 жыл бұрын

- gravity -

@Silverfirefly1

3 жыл бұрын

The term he used was capillary action, so some way to influence the pressure difference is definately required. Having that action in the filter be its most efficient is about good design and surface area. Entropy also gets its reward in the production of these exotic materials.

@Samuel_Morchin

3 жыл бұрын

A thermal differential, perhaps. Have the salt water in a solar pool, and cool pipes on the other side. Hot water molecules from the saltwater side try to balance the thermal differential, traveling from one side of the filter to the other.

Desal is top tier important future tech!

When the water moves thru the GO sheet - let’s say from left to right to follow the graphical representation used here - the salt concentration on the left increases. This raises the negative osmotic pressure on the left and ‘sucks’ the water back from the right (fresh water) side that had just come through to the fresh water side. One way this is stopped is if the spacing between GO sheets acts as a one way valve, only allowing fresh water molecules to travel in one direction, towards the fresh water side. Another way is pressure against the salt water - so again Reverse Osmosis, hopefully with a much lower pressure and energy requirement. A possible third way is to have the salt water in a container with the GO sheets at the bottom. Gravity will pull the fresh water thru. If this water has to fall into a fresh water container there will be no osmotic pressure trying to send the fresh water back into the salt water.

Thank you.

Capillary force is not "passive" as was stated in the video. Every movement requires energy; i.e. a difference in potential energy or concentration.

@Elrog3

4 жыл бұрын

Passive only means it is a spontaneous process. It doesn't mean there was no energy involved. There is no contradiction there.

@jeremysimmons8864

4 жыл бұрын

I think I see what your seeing. My guess is that the potential energy is being placed into the manufacturing process and these GO membranes have limited use or have to be "recharged" in some way. The swelling must have to do with the energy of the system. OR the video conveniently neglects to mention that the pumping that is attributed to the conventional RO process is also required for GO desalination process.

@S3b1Videos

4 жыл бұрын

@@jeremysimmons8864 It's that there's water next to a hydrophile (GO) while there's no water on the other side. You could look at it as a chemical reaction: As long as there's no product (clean water), water will happily permeate due to osmosis (the energy being the potential difference between the right and left side). However, permeation rate should slow down until it reaches equilibrium at which point water has to be removed from the right side, or more "educt" is added to the left. At least that's my best theory that's coherent with physics.

@jeremysimmons8864

3 жыл бұрын

@@S3b1Videos Interesting. I definitely need to read the researchers paper to gain some insight on the chemical aspect. I guess my biggest concern is with how the process is maintained and how much energy is required as compared to the conventional polymer membrane based RO.

This just came into my "feed" today, exactly one year after this video was released. I wonder if any progress was made. My concern about graphene isn't it's properties, but the ability to make graphene on an industrial scale. In theory, it has many potential uses. But in practice, it appears to be a very difficult medium to use in a mechanical device. I think graphene, like fusion, will always be one of those "wonder" concepts that prove more interesting in theory than they do in practice.

Excellent videos.

Thank you for Video

Thanks for sharing 👍😀

Very interesting. If and when affordable

Sir please a video on how graphene is manufactured. Both in laborotary and Industry.

@jamesmooney8933

Жыл бұрын

That is the problem

wow,,, superb animation,,

This is a game changer

Very well animated and informative video 😌

It would be good for new plants, the cost to retrofit existing plants would probably be prohibitive. Still this is excellent, keep going with the graphite wonders!

I always have an interesting idea. For the membrane that block the salt ions, if one side has no any water then does it mean net water molecules can pass through the membrane without applying any pressure on the other side. Furthermore, if we put the membrane horizontally and pour the saltwater on it, will the water molecules pass down through the membrane? Any answer is welcomed.

@rohlay00

3 жыл бұрын

Do more!!

Nanotechnology really a great revolution in human history. Even impossible can be made 100% possible.

Instead of epoxy to hold graphine together due to swelling Could you just make graphine layers closer to compensate for swelling eliminating the epoxy step?

@daniellee6912

3 жыл бұрын

did you watch the video?

This would taking the yachting industry by storm.

Extract salt 1st for sale or use thru evaporation ponds with solar distill desalination. If steam use a solar pond for inexpensive energy also power wall for storing energy to run at night!

Bro, how much time it took to render

Thanks!

nice explanation

you could use natural water mass pressure with simple pumps instead of complex pumps

There are a lot of non-food safe epoxies. Don't forget about that overtime particles of these filters will be breaking down and leaching into the water as well so I am a bit concerned about that. If they can keep it all graphine based, it would be safer since you are just drinking activated charcoal at that point which is perfectly safe.

5:07 how do we make sure that no water molecules move the other way around. After all, didn't we say that the water molecules move naturally to the side where we have more salt to balance the concentration?

@joelpivetta4421

4 жыл бұрын

Naturally the molecules want to move to try and equilibrate the pressures. However some water molecules still would but the important thing is that there would be more moving in the desired direction with creates a net movement of water to the clean side.

@yay-cat

4 жыл бұрын

Gravity maybe? also he said that the water molecules move by capillary action so maybe it’ll work like a straw?

@RbladerOS

4 жыл бұрын

@@joelpivetta4421 This is a circular argument though, isn't it? Could it be that the graphene has a relatively lower Helmholtz free energy barrier (assuming volume and temperature remain more or less constant in the system) compared to the 'normal' filter? This would still require the same amount of energy in the end, right? Perhaps the energy requirement difference stems from the pace at which desalination should occur? In either case the desalinated state should be about equally entropically unfavourable. It doesn't make sense to me that the difference arises because it takes less energy for the water molecules to be desolvated, as at the other side of the filter this same amount of energy is spent again for resolvation/reforming the hydrogen bonds. Except that the overall reduced energy barrier would accelerate the process. Maybe anti-fouling properties of the graphene membrane also differ from traditional filtration membranes? Blegh my thermodynamics is rusty.

@hyric8927

4 жыл бұрын

In desal plants, the slatless water is pumped away. Clear water has to be touching the membrane for it to have a chance to migrate to the salty side.

@RbladerOS

4 жыл бұрын

@@yay-cat Good guesses but I don't think that would explain it :). Gravity barely plays a role at the molecular scale. The thermal motion of molecules starts increasingly outweighing gravity as objects get smaller; thermal motion starts to become dominant at around 1 micron. Capillary action could work to the point where the pores are filled, but thereafter the capillary forces would act to keep the water inside so it would cancel out (although it may lower the total energy barriers to be traversed somehow).

They arent actually using the pure graphene thats a unicorn to make and is only needed for computing.

Good explanation video, but as for the technology itself we'll have to see the actual results based on sizable real-world pilot tests.

This is why I said plants should be build on the coast of every continent to restore desert areas and lower sea levels ..

@kma3647

3 жыл бұрын

1) The energy costs are enormous 2) The capital costs to build the plants are enormous 3) Lower sea levels - desalination. I'd suggest some time with some simple back of the envelop calculations of ocean volume vs throughput of desal plants. 4) Once you desalinate all this water into fresh water, then use it, where do you think it goes from there?

Is the left over salt sold as sea salt?

That is super badass.

Thanks

Nice discovery!

this is cool. how do they stop the graphene sheets from getting clogged?

@faheemarakkal8942

3 жыл бұрын

neutral/chemical back wash setup required.

Nice video keep up the good videos.

1:22 migrate one site to another ? (big) Pressure one site vs. (small pressure/vacum) another side. Or play whit tempereture too ( water boiling (small pressure/)vacum temp (and heat exchange))

Sir which software you use for making animation video.

Sir , could u please make on how does the power plant work in hindi??

This would be great for a household but solar desalination is still by far the best option for an industrial scale operation.

Nice! Thanks :)

Doesnt matter what you use as membran, the problem is the blocking of the membran and bio growth. These are the real elements make it inefficent, while in a indsturial complex you can clean it and have personal that know what they are doing, who shall do these tasks in a unit for a privat household? Yeah exactly the practical solution are throw away exchangeable units most likely. Also while the membran material might change, this is nothing new, we know about this process for years

@white_shadow_123

4 жыл бұрын

Well, if it is cheap enough, It can be used for short time and then replaced. But for some reason I am skeptical about this. Until I see a plant that is using this, it's just a theory.

idk how u neatly stack sheets of GO when it comes in tiny black flakes since the process is made by exfoliation. did they just composite epoxy with graphene oxide to make a hydrophilic membrane which can be used for RO. Imma just try using crosslinked PVA mixed with GO and see where that gets me.

I'm interested in how the first law of thermodynamics fits in to the equation. Reverse osmosis requires so much power because it takes that much power to separate the water, not because pump just magically consume energy. The pumps are doing the required work of separating the water. Where is the exchange of energy coming from in the case of GO filtration? If it's not in the filtration process, it must be in the manufacturing process of the GO "filter". The filtration process must, also, must not be a continuous process. I'm genuinely curious about what is being left out of the message. I understand the need to communicate to a lay audience, but I'd hate for physics to be swept under the rug as part of a PR campaign.

@feynstein1004

3 жыл бұрын

Exactly what I was wondering too. I feel like there's a catch here somewhere.

@fredorpaul

3 жыл бұрын

Looks like capillary forces are used to over come osmotic pressure, but yea I'm curious about the numbers, and the practical implementation, as well.

@justuseodysee7348

3 жыл бұрын

@@fredorpaul but if you want to pull water out of the capillaries, you have to overcome capillary forces as well. There's no free cake

@enjerth78

3 жыл бұрын

I'm wondering if the "magical" function of graphene-based desalination is just that it's a more efficiently designed porous material, in that it's designed at the atomic level for efficiency to pass a greater volume of water given a particular pressure. It's designed to fit this intended purpose from the bottom up. As it's explained in the video, without adding pressure to the system, I'd think it would just be a more efficient gate at drawing water towards the salt. And I thought they got the nature of the relationship between water and graphene backwards... it's not hydrophilic, it's hydrophibic.

@specialopsdave

3 жыл бұрын

The inherent resistance of the membrane, not the separation, is the place where savings are had. Because running pure water through it would still take energy, despite the lack of separation. That's the energy in question here.

Great video, I actually work doing research on graphene oxide, and let me tell you, it is not cheap. Single laminate layers only a few mils in thickness are several thousand dollars and graphene is famously difficult to work with as it sticks to everything making it very very messy. Although it is an amazing structure with so many possibilities.

@34sarahwest

2 жыл бұрын

How toxic is it in this particular application? To us drinking the water I mean.

It nice to see that the graphene revolution is upon us I can’t wait to see its application in electronics, aerospace, and construction materials

due to increase in efficiency it is possible to convert salty sea water into pure water or we are just focusing on purifying water for recycling purpose?

Even though this process may be more efficient than current reverse-osmosis processes, it will still be energy intensive. This is based upon thermodynamics, not just engineering. Separating salt from a water solution is working against entropy, which requires significant input of energy.

@memesyoinker1664

3 жыл бұрын

thats what i thought. they showed it in the video, as if the water just naturally flows through and the salt just stays. like thats not how real physics work.

@CatboyChemicalSociety

3 жыл бұрын

dont forget that each membrane unit is 1 atom thick and to make a large sheet of stacked planar pores you need an insane number of layers on the order of avogadros number.

What about filtering out chemicals and pollutens