Possible to Precipitate Ammonium Sulfate

[pperlich]

I have a batch of partially used pickling acid (sulfuric acid) which mistakenly had some flux introduced into it.
The ferrous concentration is about 4% currently.
The flux is a mixture of ammonium chloride, potassium chloride, zinc chloride, and sodium chloride.
Is there a process to remove via precipitation or otherwise the ammonium from this "soup"?
My limited understanding is that ammonium sulfate would be very soluble.
Thank you!

Phil

http://www.quicktanks.com

 

[georgeverghese]

Dont know of any amm salts that are insoluble in water. All are very soluble.
Moreover, zinc in this alkaline solution has probably turned this solution milky with some or all of the zinc in solution turning into insoluble zinc hydroxide. At higher pH, weakly cationic zinc goes back into solution as a complex zinc amm hydroxide.
If you used an cationic ion exchange resin, it will remove ALL cations here ( Fe++, NH4+, K+, Na+, Zn++, Na+).

 

[shvet]

Is there a process to remove via precipitation or otherwise the ammonium from this "soup"?

Negative as relevant ammonium salts are totally soluble in water. Dispose it.
In theory ammonia reduction bacterium can be applied but I am sure there is no evidence such has been reported positively applied in industry scale.