Extract potassium nitrate from npk fertilizer

  • Thread starter vegapunk
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    Extraction
In summary, extracting potassium nitrate from NPK fertilizer involves dissolving the fertilizer in water, followed by filtration to remove insoluble materials. The solution is then concentrated through evaporation, allowing potassium nitrate to crystallize. The resulting crystals can be collected, washed, and dried for use. This method leverages the soluble potassium and nitrate components present in the NPK formulation.
  • #1
vegapunk
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Hello i have NPK fertilizer 20-20-20 and i want to extract potassium nitrate crystal from it is that possible and if so how can I do it??
 
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  • #2
Why? Why not just buy some potassium nitrate? What's the application here?
 
  • #3
Perhaps the OP intends to add some sulfur and charcoal...
Buying some compounds on a particular list is monitored, remember.
 
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Likes Averagesupernova, DaveE and berkeman
  • #4
Just because the fertilizer contains N and K doesn't necessarily mean it contains potassium nitrate.

Technically yes, it is doable. Practically it is much easier to buy the potassium nitrate itself.
 

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