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Lewatit® TP 207

Lewatit® TP 207 is a weakly acidic, macroporous cation exchange resin, with chelating iminodiacetate groups, for the selective extraction of heavy metal cations from weakly acidic to weakly basic solutions.

 


Divalent cations are removed from neutralized waters in the following order:
Copper > Vanadium (VO) > Uranium (UO2) > Lead > Nickel > Zinc > Cadmium > Iron(II) > Beryllium > Manganese > Calcium > Magnesium > Strontium > Barium >>> Sodium.


It is especially suitable for use in the following applications:

  • Selective removal of trace heavy metals from effluents of the metal surface finishing industry, even in the presence of high calcium concentrations
  • Recovery of industrial useful metals from electroplating rinse waters
  • Removal of metal contaminants from processing baths,
    Concentration, extraction and recovery of heavy metals from hydrometallurgical solutions
  • Removal of heavy metals from contaminated ground water. The selective extraction is achieved even in the presence of the following complexing agents: Nitrogen compounds, e.g. ammonia, aliphatic and aromatic amines, multivalent carboxylic acids, e.g. citric acid, gluconic acid, glucuronic acid, oxalic acid, tartaric acid, phosphates, e.g. tetrasodium diphosphate, sodium polyphosphate.

 

Lewatit® TP 207 does not remove heavy metals from solutions containing EDTA or NTA respectively. Only cadmium is removed from solutions containing cyanides. For the extraction of those heavy metals which follow the uranyl oxide ion in the selectivity sequence as shown above. It has to be conditioned with caustic soda solution after every regeneration cycle before every exhaustion cycle. After the conditioning it is partially in a salt-form, e.g. mono-sodium-form. Before commissioning a Lewatit® TP 207 unit, see our Technical Information OC/I 20 343e for laboratory tests.

 


Properties & benefits:-

  • Selective removal of trace heavy metals from effluents of the metal surface finishing industry, even in the presence of high calcium concentrations
  • Recovery of industrial useful metals from electroplating rinse waters
  • Removal of metal contaminants from processing baths
  • Concentration, extraction and recovery of heavy metals from hydrometallurgical solutions
  • Removal of heavy metals from contaminated ground water.

 

Areas of Applications:-

  • Catalysis and Chemicals Processing
  • Chemical synthesis
  • Waste water treatment 
  • Heavy metal removal 
  • Electroplating waste water purification
  • Waste water treatment
  • Potable water treatment
  • Industrial Water Treatment
  • End-of-pipe
  • Metal industry
  • Hydrometallurgy
  • Germanium mining
  • Removal of heavy metal
  • Nickel/Cobalt mining

CAS Number:-

  • 135620-93-8 

Synonyms:-

  • Lewatit MonoPlus TP 207
  • Lewatit MonoPlus TP 207 FINE
  • Lewatit MonoPlus TP 207 XL
  • Lewatit TP 207