Lewatit® MDS TP 220 is a macroporous weakly basic resin with chelating bis-picolylamine groups attached to a styrene/divinylbenzene co-polymer. Its monodisperse bead size distribution combined with a small mean bead size results in improved adsorption kinetics and an approx. 25% higher copper binding capacity relative to Lewatit® MonoPlus TP 220.

At a pH of 2, heavy metal cations are removed from aqueous solutions consistent with the following selectivity series:
Cu >> Ni2+ > UO2 2+ > Fe3+ > Zn2+ > Co2+ > Cd2+ > Fe2+.

Lewatit® MDS TP 220 is especially suitable for the use in the following applications:

  • Purification of cobalt electrolytes (cobalt/nickel separation)
  • Separation of nickel/copper from ferric solutions
  • Recovery of copper from strongly acidic solutions (pH < 2)
  • Purification of chromium(III) baths (removal of heavy metals such as copper and nickel)
  • Adsorption of heavy metals (e.g. copper) from solutions containing strong chelating agents like EDTA

Whilst most metals are removed from the loaded resin with a conventional acid strip, copper can only efficiently be desorbed with ammonia solution.

Product Group: Chelating Resin
  • Extraction
  • Industrial water
  • Metal industry
  • Mining
  • Purification
  • Recovery
  • Recycling
  • Removal
  • Rinse water
  • Separation
  • Waste water treatment
  • Water Treatment

Technical Data sheet

Safety data sheet

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