Chelating Resin The release of heavy metals from industrial entities into the natural environment has led to serious pollution problems. Since these heavy metals are not biodegradable and can be biologically accumulated, their harmful effect on the environment lasts for long time. Among these different heavy metals, nickel is of high concern as it is extensively utilized in the modern industry. Direct exposition to nickel cause dermatitis, while some nickel compounds are carcinogenic and easily absorbed by skin . D851 chelating resin is Specialty Resins is a macroporous weak acid cation resin based on the iminodiacetate acid function group, which mainly used for separation recovery and adsorbent of bivalence metals, also used for brine refining in the process of ion membrane soda producing industry. Chelating Resin has good selectivity for calcium and magnesium with large exchange capacity and physical strength.