Chelation Products

Purolite's wide range of chelating resins contain special functional groups that gives these resins superior selectivity for specific target metals. Chelation resins are found in a wide range of metals removal and recovery applications, from the primary recovery of precious metals as well as the removal of impurities that may be present as mere traces. Typical applications include brine purification in the chlor-alkali industry, extraction and purification of base metals (copper, nickel, cobalt, zinc), removal of boron from potable and process water, recovery of precious metals, removal of toxic metals like mercury and many others. Regenerable and non-regenerable chelating resins are available to cover all different needs.

Product	Functional Group	Ionic Form*	Capacity (min.)	Moisture Retention (%)	Remarks & Applications
PUROMET MTS9100	Amidoxime	Free Base	40 g Cu/l	52−60	Selective removal of heavy metals and precious metals recovery from process solutions.
PUROMET MTS9140	Thiourea	—	1.0 eq/l	50−56	High selectivity and high capacity for mercury removal from brine and effluent from chlor-alkali process. Selective recovery of precious metals (gold, platinum, palladium, etc.) from acidic solutions. Stable over entire pH range. Non-regenerable use.
PUROMET MTS9200	Isothiouronium	H⁺	275 g Hg/l	48−54	High selectivity and high capacity for mercury removal in wastewaters. Widely used for final polishing to meet mercury discharge limits. Selective recovery of precious metals (gold, platinum, palladium, etc.) from acidic solutions. Non-regenerable use.
PUROMET MTS9500	Aminophosphonic	Na⁺	26 g Ca/l	57−65	Selective removal of heavy metals from wastewaters. Purification of selected plating baths in the surface finishing industry (i.e. bright nickel bath rejuvenation).
PUROMET MTS9600	Bis-picolylamine	SO₄²⁻	35 g Cu/l	50−60	High affinity for transition metals, even at very low pH or in the presence of complexing agents. Useful for cobalt electrolyte purification and Cr(III) plating bath purification.
PUROMET MTS9850	Polyamine	Free Base	2.3 eq/l	56−63	Removal of heavy metals present in complexed form (e.g. EDTA complexes) from wastewaters.
S108	N-methylglucamine	Free Base	0.6 eq/l (Cl⁻ form)	61−67	Selective removal of boron from potable water and water used in agriculture/horticulture irrigation. Also, for use in wastewater and process water applications.
S930Plus	Iminodiacetic	Na⁺	50 g Cu/l	52−60	Purification of brine in chlor-alkali plants offering highly efficient removal of strontium.
S9320	Iminodiacetic	Na⁺	50 g Cu/l	54−62	Purification of brine in chlor-alkali plants offering highly efficient removal of strontium. Higher operating capacity and kinetics, high mechanical and osmotic strength.
S940	Aminophosphonic	Na⁺	20 g Ca/l	55−65	Used in purification of brine in chlor-alkali plants where strontium control is not required.

出典: Purolite Product Guide p.21