Chelating resin

They are almost always used to bind cations, and utilize chelating agents covalently attached to a polymer matrix.

Chelating resins have the same bead form and polymer matrix as usual ion exchangers.

Chelating ion-exchange resins are used for brine decalcification in the chlor-alkali industry, the removal of boron from potable water, and the recovery of precious metals in solutions.

Soil contaminated with heavy metals including radionuclides is mitigated primarily using chelating resins.

[6][7] Chelating polymers (ion-exchange resins) were proposed for maintenance therapy of pathologies accompanied by iron accumulation, such as hereditary hemochromatosis (iron overload)[8][9][10][11] or Wilson's disease (copper overload),[12] by chelating the metal ions in GIT and thus limiting its biological availability.

A tridentate metal complex with the iminodiacetate anion, illustrating the nature of the metal-binding site in some chelating resins