Strongly Acidic Cation Exchange Resins
A strongly acidic cation exchange resin is a type of ion exchange resin that has a high capacity for positively charged ions (cations) and a low capacity for negatively charged ions (anions). It is typically used in water treatment processes for the removal of cations such as calcium, magnesium, and iron. The resin is typically made from a polymer matrix that has been functionalized with sulfonic acid or carboxylic acid groups, which provide the strong acidity necessary for cation exchange. These resins are typically used in the hydrogen form (H+) and can be regenerated with acid solutions like sulfuric acid.