Strong acid cation resin contains a large number of strong acidic groups, such as sulfonic acid base-SO3H, easy to dissociate in the solution H+, so it is strong acidic. After the resin is dissociated, the negative-charged groups contained in the body, such as SO3-, can be adsorbed to bind the other cations in the solution. These two reactions allow the H+ in the resin to be exchanged with the cations in the solution.
The dissociation ability of strong acid cation resin is very strong, in acidic or alkaline solution can be removed and produce ion exchange effect. After the use of resin for a period of time, to be regenerated treatment, that is, the use of chemicals to make ion exchange reaction in the opposite direction, so that the functional group of the resin back to the original state, for reuse. If the cationic resin mentioned above is regenerated with strong acid, at this time the resin released the adsorbed cationic, and then combined with the H+ and restore the original composition.
Ion exchange resin can not be stored in the open air, storage at a temperature of 0-40 ℃, when the storage temperature is slightly less than 0 ℃, should be added to the bag clear saturated salt water, soaking resin.
In addition, when the storage temperature is too high, not only make the resin easy to dehydrate, but also accelerate the degradation of the anion resin. Once the resin is dehydrated, the use can not be directly added water, can be used to clarify the saturated salt water immersion, and then gradually add water dilution, wash away salt, storage period should keep it moist.