Decarbonation Resin


Decarbonation is the procedure which uses a carboxylic-type ion exchange resin to transform the calcium and magnesium bicarbonate salts (temporary hardness) into carbonic acid. The low stability of the carbonic acid and the low water solubility of its anhydride, carbon dioxide, mean that it can be eliminated using a degassing tower. When the resin is saturated with calcium and magnesium, it is regenerated in hydrogen form (H+) using a strong acid (usually hydrochloric or sulphuric).