symboom
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Interesting way to evaporate solutions
Interesting method of evaporation using heated air and a fish bubbler stone to defuse hot air through the solution due to water gaining energy from
the hot air and the extra surface contact between the water and the hot air which cause the same conditions as a a shallow wide container but in a
graduated cylinder
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XeonTheMGPony
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And what was your results?
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symboom
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I thought i stated that i could get around the same amount of evaporation with the same volume in a tall container i think a picture would explain my
results better
[Edited on 18-4-2018 by symboom]
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Ubya
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how did you heat the air?
air pump pumps air through a metal tube heated by a bunsen?
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feel free to correct my grammar, or any mistakes i make
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Sulaiman
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I imagine that the bursting bubbles carry some of the wanted part of the solution into the air,
then disperse it as a aerosol ?
In general I do not like bubbling air because of the CO2 and/or moisture, and dust.
CAUTION : Hobby Chemist, not Professional or even Amateur
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LearnedAmateur
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I guess you could bubble it through a base bath first, sodium *carbonate/hydroxide should suffice and is very cheap, and it’ll remove the dust too.
If moisture is such a huge concern then a H2SO4 bath will deal with that but if it’s just air for evaporation then you’re removing water anyway so
I doubt it’s any more than a negligible issue.
*Thanks for the correction Xeon
[Edited on 18-4-2018 by LearnedAmateur]
In chemistry, sometimes the solution is the problem.
It’s been a while, but I’m not dead! Updated 7/1/2020. Shout out to Aga, we got along well.
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XeonTheMGPony
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if you look at my lab pics I run my air throw a desiccant stack (Silica-gell doped with cobalt chloride), be for that, and not shown, is a dust
filter.
Bicarbonate is the all ready saturated form it will release co2 not absorb it, you'd need the carbonate for that, better yet will be the hydroxide.
[Edited on 18-4-2018 by XeonTheMGPony]
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symboom
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i repurposed my plastic welder. it works by melting plastic from heated compressed air and has a adjuster it will even burn paper on its highest
setting. Yes aerosol particles may escape which is why the container should be as tall as possible.
XeonTheMGPony those are great sugestions im thinking tgis method of accelerated evaporation could be used by more heat sensitive compounds
how did you heat the air?
air pump pumps air through a metal tube heated by a bunsen?
Actually haven't thought of doing it that way the other way i could think of is using a hair dryer and piping the hot air into the solution
The other method is a atomized spray of the solution on to a hot surface which is what i think they do in industry to remove water from salts
[Edited on 18-4-2018 by symboom]
[Edited on 18-4-2018 by symboom]
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LearnedAmateur
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Quote: Originally posted by XeonTheMGPony  |
Bicarbonate is the all ready saturated form it will release co2 not absorb it, you'd need the carbonate for that, better yet will be the hydroxide.
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Whoops, that’s my bad, was thinking along the lines of acid + base since CO2 dissolves in water to form carbonic acid. You’re right about OH-
being the best option though.
In chemistry, sometimes the solution is the problem.
It’s been a while, but I’m not dead! Updated 7/1/2020. Shout out to Aga, we got along well.
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VSEPR_VOID
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It is remarkable how we can find methods of overcomplicating the movement of hot air. This apparatus now involves heating elements, drying tubes
charged with anhydrous salts, and glass air stones
Within cells interlinked
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LearnedAmateur
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Why not, I mean if you’ve got the materials on hand and don’t mind sparing them for this purpose then make the most of modern technology. At least
we’re not going back to sticking tin cans over campfires; it looks and behaves at least somewhat advanced despite just being the ‘movement of hot
air’ - who knows regarding efficiency and risk though, first things first I suppose.
In chemistry, sometimes the solution is the problem.
It’s been a while, but I’m not dead! Updated 7/1/2020. Shout out to Aga, we got along well.
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VSEPR_VOID
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I see what you are saying and agree. I would like to see what comes out of this idea. I would recommend a hot air gun with a fitting to go the a air
stone.I imagine these would be somewhat chemical resistant baring the plastic fitting:
https://www.amazon.com/Diffusers-Industries-Glass-Bonded-Dif...
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aga
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Surface area of the liquid being evaporated, reduced pressure, stuff like that works:
http://modernistcuisine.com/2011/11/vacuum-concentrating-par...
Cyclonic phase separation is said to be better.
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RogueRose
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Placing a solution in the oven on low (130-160F) seems to work fine for compounds that have a low decomp point. It will evaporate water, a couple L
per day at this temp from what I've found and it is as easy as it gets.
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