atomicfire
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Removing sodium from a solution
Hi all,
Long time reader seldom poster here looking for a little advice.
I have a solution that is a waste product from a process that I need to dispose of. The problem is that the solution is concentrated and contains
high levels of sodium ions in solution. I want to remove as much of the sodium as possible.
One big problem is that once the solution cools, it gets so vicous that it renders itself unusable. Dilution is something I need to stay away from as
much as possible but if that's the only way then I can go that route.
I was thinking of trying to react it with HCl but I don't know if I can get the salt out.
Any suggestions? What are other ways of removing metal ions from a solution?
ban DHMO
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Loptr
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Depending on the situation you have going on there, you will most likely have to resort to the solubility (or limited solubility) of your compounds of
interest in various solvents in order to separate them.
You need to provide more information about your solution, such as the solvent(s) involved and its solvated contents.
[Edited on 11-5-2015 by Loptr]
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Amos
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If it's something you've deemed necessary of disposal, I'd be more worried about what kinds of anions you're dealing with, rather than sodium being
problematic.
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aga
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What Volumes are involved ?
Is this a home chemistry experiment (<1 litre solution) or an Industrial requirement ( > 1000 litres) ?
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blogfast25
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One of the most insoluble sodium compounds is sodium antimonate (Na2SbO3 hydrate).
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WGTR
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Sodium dihydroxytartrate and acid potassium pyroantimonate
Used for estimation of sodium in solution:
https://books.google.com/books?id=STM9AAAAIAAJ&pg=PA24&a...
[Edited on 5-12-2015 by WGTR]
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phlogiston
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reverse osmosis
ion exchange
Depending on what you want to separate the sodium from (ie the other stuff in the solution), other options may exist (eg. dialysis if you the other
molecules are large).
I don't understand why you are focusing on the sodium? Presumably, it is not a harmful component of your waste (unless it is sodium-22).
[Edited on 12-5-2015 by phlogiston]
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"If a rocket goes up, who cares where it comes down, that's not my concern said Wernher von Braun" - Tom Lehrer |
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macckone
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Knowing what else is in the solution is necessary to know how to remove unwanted components.
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Steam
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try using crown ethers. Depending on the size of the crown ether you can move the appropriate ion to an organic phase.
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Hawkguy
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Try adding a solvent that renders the Sodium insoluble... Alcohol gets rid of the Sodium Sulfate, Carbonate, Cyanide and some others in solution..
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