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Thread: Converting water into air

  1. #1 Converting water into air 
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    Is it possible to turn water into air?


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  3. #2  
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    Using electrolysis, water separates into gaseous hydrogen and oxygen.

    2·H2O —> 2·H2 + O2


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  4. #3 Re: Converting water into air 
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    Quote Originally Posted by greychief
    Is it possible to turn water into air?

    easy answer is No.

    Air contains Nitrogen, Oxygen Carbon dioxide and other trace gases.

    Water contains hydrogen and oxygen only.
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    thats not true! water contains all types of trace elements to have you ever tried to take care of an aquarium especially a saltwater aquarium????
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  6. #5  
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    That's a SOLUTION not pure water
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    well then air is a solution :P its not pure either.
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    Air is not a solution. Solutions consist of ions or molecules dissolved in a solvent. Solvents are liquid, not gaseous.

    Edit: I am talking crap. Gases may also act as solvents. I already knew solids could. I'll leave this up as warning to myself to think before I speak. (On the bright side it only took me two or three seconds after posting to realise I was talking crap.)
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    First we should be defining the words water and air, before any further debate.
    If air is any mixture of any gas in our atmosphere with any concentration and water is H2O with anything soluted in it, then you could make air out of water.

    If you want the perfect concentrations, and if you mean only H2O, then it is impossible. So Greychief, please define both terms.
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    A Texas-based company has created a device that can turn air into drinking water.
    Aquamaker claims that much like a dehumidifier, its new technology works to capture humidity in the air and convert it into water.
    The machines comprises of filters which prevent pollutants in the air from getting channeled into the resulting water
    Aquamaker claims that its machines are capable of producing up to 5,000 litres of water at a time, which would be enough to supply an entire village with fresh water without having to drain an area’s precious natural resources.
    The company says that upon being used with a solar power generator, its device provides an environmentally friendly alternative to bottled water for areas with a limited tap water supply.
    Currently, the devices are sold in the US, Australia, Israel, and several other countries, and are available in both commercial and industrial sizes.
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  11. #10  
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    A Texas-based company has created a device that can turn air into drinking water.
    Aquamaker claims that much like a dehumidifier, its new technology works to capture humidity in the air and convert it into water.
    The machines comprises of filters which prevent pollutants in the air from getting channeled into the resulting water
    Aquamaker claims that its machines are capable of producing up to 5,000 litres of water at a time, which would be enough to supply an entire village with fresh water without having to drain an area’s precious natural resources.
    The company says that upon being used with a solar power generator, its device provides an environmentally friendly alternative to bottled water for areas with a limited tap water supply.
    Currently, the devices are sold in the US, Australia, Israel, and several other countries, and are available in both commercial and industrial sizes.

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  12. #11  
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    Quote Originally Posted by heathhutt
    A Texas-based company has created a device that can turn air into drinking water.
    Aquamaker claims that much like a dehumidifier, its new technology works to capture humidity in the air and convert it into water.
    The machines comprises of filters which prevent pollutants in the air from getting channeled into the resulting water
    Aquamaker claims that its machines are capable of producing up to 5,000 litres of water at a time, which would be enough to supply an entire village with fresh water without having to drain an area’s precious natural resources.
    The company says that upon being used with a solar power generator, its device provides an environmentally friendly alternative to bottled water for areas with a limited tap water supply.
    Currently, the devices are sold in the US, Australia, Israel, and several other countries, and are available in both commercial and industrial sizes.
    But it's not actually turning air into water is it?

    Actually converting air into drinking water would require a chemical change to combine the oxygen component of Air with hydrogen (not a component of air) yielding water and air (low in oxygen).

    It is simply removing moisture from the air
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    yeah at my school we have a dehumidifier in the coral lab.
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    How can you not trust JGK? Just look at that face!

    Seriously though, he's right.
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  15. #14 Great question! but here's the trick i need solved! 
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    Is it possible for me to build a filter that allows me to transform sea water into air? evaporation is a way perhaps but isn't there a cold technique (not requiring heating the water)
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    Basically i'd like to develop a device that allows me to breathe underwater without a tank thanks to a conversion chamber
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  17. #16  
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    In the 1960s a research team was working on a semi-permeable membrane device that would extract dissolved oxygen from water and deliver it for breathing by a diver. I have heard nothing of that project since, so very likely it was a failure at some (perhaps more than one) level.
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    What's wrong with using a re-breather? I wouldn't want to stay underwater for much longer than what a re-breather allows, decompression and whatnot.
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    technically the nitrogen you breathe diffuses in and out of lungs but could be filtered and recycled, you need oxygen more than nitrogen to breathe, so electrolysis could do it , but you will need a lot of generators to power it fast enough to compensate, co2 filters, plus this device would be size of a small room as oppose to something you could fit on your back. you cannot breakup water without putting a lot of energy into it , it takes alot of energy to break up water to O2

    a membrane could do what you are saying, what with the filtering, but it would need to be just small enough to let the oxygen through but not the water, yet strong enough to withstand the pressure, we can do it with salt & water, but i don't think there is anything yet for oxygen, but could pop up any day now what with nanotechnology and such!
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    I believe artificial gills that extract dissolved air from water were tried in the sixties and were not sccessful. I think the problem may have been dealing with the pressure gradient but I'm not sure. I do know that artificial gills have not replaced compressed air for divers. It could be that the technology is just too expensive.
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    Thanks for the great replies! The thing is that i'm a diver and designer, i am very familiar with the rebreather, its a great tech but yet i wonder why with so much accessibility to oxygen and nitrogen why we still haven't figured it out, if we look at gills they are such an extraordinary mechanism for that. Yet we still have to bring our own air when diving. Even revo or any other rebreather still needs tanks and pre filtered air. I think the gill system worn like a gas mask is the future of diving. For decompression well if the diver always receives 79%n and 21%o2 we still get a lot of time underwater the problem with nitrox air or o2 enriched is the at greater depth the percentage of o2 and n becomes too high and thus generates bends and other problems.
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  22. #21  
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    Gills:
    Fish have less oxygen requirement and what is taken from the water is absorbed directly into the bloodstream from the gills.
    This is more efficient than extracting it and then breathing it into lungs.
    We also have a High oxygen requirement.
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  23. #22  
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    Well actually we don't need that much we reject a lot of oxygen from the air we breathe, on average 5 to 6% out of the 21% is needed by a "normal" person, in high altitude treks we usually manage in extreme effort with air that naturally has as little as 8 or 9% o2, the body compensates by increasing the red cell count, increasing the performance of the body at normal altitude (phelps trains at very high altitude 6 hours a day).
    this is how rebreathers work they recycle the air you exhale.
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  24. #23  
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    Quote Originally Posted by abutoni View Post
    we reject a lot of oxygen from the air we breathe,
    Inefficient.
    Extract the oxygen from the water, then breathe it into lungs...

    Our oxygen requirement is still higher than it is for a fishy.
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