Stripping ions from exchange resin

[Strange_matter]

TL;DR

I want to remove the hydrogen ions from a cation exchange resin. I believe it uses polystyrene sulfonate.

I want to strip the hydrogen ion from a cation exchange resin. Would it be feasible to do this using hot water? I've tried using water at somewhere above 130 degrees Fahrenheit I believe, but I didn't see any immediate decrease in pH. I believe the resin uses polystyrene sulfonate. Should I use boiling water? I'm concerned about degrading the resin. I want to use the deionized resin to remove the sodium from sodium bicarbonate. It would also be nice to be able to use the solution of hydrogen ions as well.

 

[BillTre]

What does the manufacturer say?

 

[Borek]

Somehow I don't get what you say. Ions are not "stripped" but replaced. What do you want to replace H⁺ with using just water?

Resin that adsorbed metal cations can be regenerated by using an acid - H⁺ will replace the cations. You can get the same effect with copious amounts of water - cations will get replaced with H⁺ from water autodissociation (although amount of water required makes this process unpractical).

So, back to my question: what do you want to replace H⁺ with using just water?

 

[Strange_matter]

Somehow I don't get what you say. Ions are not "stripped" but replaced. What do you want to replace H⁺ with using just water?

Resin that adsorbed metal cations can be regenerated by using an acid - H⁺ will replace the cations. You can get the same effect with copious amounts of water - cations will get replaced with H⁺ from water autodissociation (although amount of water required makes this process unpractical).

So, back to my question: what do you want to replace H⁺ with using just water?

That is typically how it works, but couldn't I in theory remove the hydrogen from the resin? There should be some degree of dissociation, and I believe polystyrene sulfonate should be a fairly strong acid. I don't want to replace the hydrogen with other cations, as is typical.

 

[mjc123]

So what then? Are you expecting to get a solution full of unbalanced H⁺ ions, and a resin full of unbalanced sulfonate anions? Good luck with that!

 

[Strange_matter]

So what then? Are you expecting to get a solution full of unbalanced H⁺ ions, and a resin full of unbalanced sulfonate anions? Good luck with that!

In theory there should be some dissociation of ions, and I can exchange water once it reaches equilibrium to continue removing hydrogen ions. I want to use hot water to encourage dissociation, but I'm unsure why I'm not seeing a decrease in pH.

 

[symbolipoint]

In theory there should be some dissociation of ions, and I can exchange water once it reaches equilibrium to continue removing hydrogen ions. I want to use hot water to encourage dissociation, but I'm unsure why I'm not seeing a decrease in pH.

Best to recheck post #3 what @Borek said.