Ion exchange encompasses procedures of water filtration utilizing strong polymeric particle trade pitch. All the more decisively, the process works in a way where particles are traded between two electrolytes. Aside from its utilization to decontaminate drinking water, the method is generally applied for sanitization and partition of an assortment of mechanically and therapeutically significant synthetics. Despite the fact that the term normally alludes to uses of engineered (man-made) tars, numerous materials, specifically soil, show ion exchange properties.

Ordinary ion exchangers are particle trade tars (functionalized permeable or gel polymer), zeolites, montmorillonite, mud, and soil humus. Ion exchangers are either cation exchangers, which trade emphatically charged particles (cations), or anion exchangers, which trade adversely charged particles (anions). There are additionally amphoteric exchangers that can trade the two cations and anions at the same time. Be that as it may, the synchronous trade of cations and anions can be all the more effectively acted in blended beds, which contain a blend of anion-and cation-trade saps, or passing the treated arrangement through a few diverse particle trade materials.

Particle trades can be un-selective or have restricting inclinations for specific particles or classes of particles, contingent upon their substance structure.