Studies on Some organic Ion Exchangers in Purification of Water

Ion exchange is an exchange of ions between two electrolytes or between an electrolyte solution and a complex. In most cases the term is used to denote the processes of purification separation and decontamination of aqueous and other ion-containing solutions with solid polymeric or mineralic ''ion exchangers''. Ion exchangers are natural substances—for example certain clays or deliberately synthesized resins containing positive ions (cation exchangers) or negative ions (anion exchangers) that exchange with those ions in solution having a greater affinity for the exchanger. This selective affinity of the solid is called ion or ion-exchange chromatography.