plating, anodizing, & finishing Q&As since 1989
Anionic bed regeneration
Hi dear reader.
I am Qaiser.
At our water treatment plant we use ion exchange resin beds for deionization of water. Deionized water contains SiO2 <10 ppb. Exhausted resin beds (weak & strong) are regenerated with 4% NaOH solution.
What will be the effect on regeneration if we use Ammoniacal water (NH3 + water) instead of NaOH for regeneration?
I want comparison between NaOH and NH4OH regenerations.
Sodium Hydroxide, NAOH is pivotal in the regeneration Of DI beds in that the Hydroxide Ions are what attach themselves to the resins surface be it hydrogen or oxygen respectively (Cation/Anion)
This occurs so that during treatment the Hydrogen/Oxygen Ions swap places with the Metal Ions releasing the "H2O"
back into the system.
The Sodium has a pivotal role with the sodium hydroxide.
Would I try to use ammonia? No.
I hope you find what your looking for.
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