WaterSolutions Separation of the Alkaline Earths from Liquid Media

Water / Wastewater: Removal of alkaline earth metals from water and organic solvents is fairly common using strong acid cation exchange resins. For waters with low levels of salt content, a strong acid cation resin such as DOWEX™ G-26 (H) resin would be a good starting point. Under alkaline conditions, a weak acid cation exchange resin such as DOWEX MAC-3 resin will provide higher capacity and easier regeneration.

Various cations have different affinities for strong acid cation exchange resins.

Brine Softening: Calcium, magnesium and strontium can be selectively removed from brine with an aminophosphonic acid chelating resin, AMBERLITE™ IRC747.