Sciencemadness Discussion Board

Removing dissolved organics from ammonia solution

itsallgoodjames - 31-3-2021 at 05:23

Yesterday I noticed that my bottle of ammonia had turned white and become stiff. I transferred to to a glass bottle. But the issue now is that the ammonia contains some of the dissolved plastic. How would I remove the plastic contaminants from the ammonia? Obviously I can't just distill it, as the ammonia will all come out of solution before the water boils, so how else would I purify it? Or is it just not worth it, and I should throw it out and make some new ammonia from fertilizer?

Thanks!

Edit - I should mention, it's about 400ml of 25% ammonia solution

[Edited on 31-3-2021 by itsallgoodjames]

RustyShackleford - 31-3-2021 at 05:37

reflux the solution, put a tube from the top of the condenser to a suckback trap and then so it bubbles into a vessel of water. The ammonia will be driven out by the high temperature and it will redissolve in the fresh water (use aprox 300ml, ice cold)

ammonia.png - 16kB

itsallgoodjames - 31-3-2021 at 05:53

Thanks! I'll do that. So I assume I'll loose around a quarter of the ammonia, given it will redissolve in only 300ml?

Edit - wait no, I'm stupid, the ammonia makes up 25% of the volume

[Edited on 31-3-2021 by itsallgoodjames]

Fulmen - 31-3-2021 at 07:43

Just use the same amount of water and you should end up with roughly the same concentration.