Sell Mitsubishi Chemical's Heavy Metals Recovery Resin

CR11 has iminodiacetic acid group as chelating ligand which is bonded onto a highly porous crosslinked polystyrene matrix.  DIAION CR11 shows large affinity for alkaline earth and transition metal ions, and the selectivity is similar to that of ethylene diamine tetra-acetic acid (EDTA) . The selectivity order of DIAION CR11 for metal ions is as follows:

Cr3+ > In3+ > Fe3+ > Ce3+ > Al3+ > La3+ > Hg2+ > UO2+ > Cu2+ > VO2+ > Pb2+ > Ni2+ > Cd2+ > Cd2+ > Zn2+ > Co2+ > Fe2+ > Mn2+ > Be2+ > Ca2+ > Mg2+ > St2+

Adsorbed metal ions can be eluted with an acid, and the resin can be reused after  regeneration with caustic alkali. The most typical application of DIAION CR11 is the secondary purification of brine in chlor-soda electrolysis plants.  DIAION can remove a small amount of alkaline earth metals (Ca2+, Mg2+, St2+) from a highly concentrated sodium chloride solution.

CR20 has polyamine group as chelating ligand which is bonded onto a highly porous crosslinked polystyrene matrix. DIAION CR20 shows large affinity for transition metal ions, but does not adsorb alkali, alkaline earth, and Sn Zr Th Al Fe(II) ions . The selectivity order of DIAION CR11 for metal ions is as follows:

Hg2+ > Fe3+ > Cu2+ > Zn2+ > Cd2+ > Ni2+ > Co2+ > Ag+ > Mn2+

Adsorbed metal ions can be eluted with an acid, and the resin can be reused after regeneration with caustic alkali.

CRB02 is a borate selective resin, and has N-methylglucamine group bonded onto a highly porous crosslinked polystyrene matrix.