Separation of Manganese from Liquid Media
Mn2+ is the ionic twin of Fe2+. Its main uses are in alloy and steel formulation, the colorizing of glass, and in battery manufacturing.
In the context of commercial mining, the use of ion exchange resins for primary manganese collection is not currently practiced; however, several pilot operations have been evaluated. Heavy metals can be selectively removed from acid leach solutions using AmberSep™ M4195 Chelating Resin.
In very strong acids, manganese forms anionic complexes that can be effectively removed from the acid using a strong base anion exchange resin such as AmberSep™ 21K XLT Resin.
Manganese removal from water via ion exchange is common in chemical and petrochemical processing, oil refining, semiconductor manufacturing and power utility plants.
In waters with low levels of dissolved salts, a strongly acidic cation exchanger such as AmberSep™ G26 H Resin is employed.
Weak acid cation exchange resins such as AmberLite™ IRC83 H Resin often provide high capacity and good multivalent ion selectivity.
In more brackish waters, however, chelating/selective resins may be required. Chelating resins have reactive units dispersed along their polymer matrix, each of which has multiple metal binding sites. Hence, chelating resins, such as AmberSep™ IRC748 Resin, are selective for multivalent cations over monovalent cations like sodium and potassium.