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Lewatit® TP 260

Lewatit® TP 260 is a weakly acidic cation exchange resin with chelating amino methyl phosphonic acid groups for the selective removal of trasition heavy metals and alkaline earth cations. The monodisperse beads are mechanically and osmotically stable. The optimized kinetics lead to an increased operating capacity compared to ion exchange resins.

 

Divalent cations are removed from neutralized waters in the following order: Uranium (UO 2) > Lead > Copper > Zinc > Nickel > Cadmium > Cobalt > Magnesium > Strontium > Barium >>> Sodium.


It is e. g. suitable for use in:

  • Uranium removal from crude phosphoric acid
  • Titanium removal from recycled battery acid
  • Aluminium removal from urea solutions
  • Fluoride removal with aluminiua doped Lewatit® TP 260
  • Lead and stominum removal from BF4
  • Containing waste water out of PCB production
  • Removal of iron (II), nickel and zinc from 5 % gluconate containing liquid metal working

In brine purification the operating capacity of Lewatit® TP 260 depends on the pH-value of the brine. At pH 10 it is approx. threefold that achieved at pH 8. At pH 10 and calcium content of 5 ppm, a capacity up to 16 g Ca/l Lewatit® TP 260 (volume of of total sodium form) is obtained. At a service flow rate of 20-30 BV/h, the residual calcium values are well below 10 ppb. Greater security can be achieved by operating two units of equal size in series (see our Technical Information SP IOW 4006e).

 

Lewatit® TP 260 has to be continued with caustic soda solution after every regeneration cycle/before every exhaustion cycle.

 

After the conditioning it is in disodium form for the final polishing of chlorakali brine feed. In other applications the operating capacity depends strongly on the process conditions.

 

Secondary purification of brine feed to chlorakali membrane cells (traces of alkaline earth ions are removed after their normal precipitation by carbonates in the pH-range 7-11) at absence of iron (III) ions and in case of low demand on Sr and Ba removal.

Business Unit

Liquid Purification Technologies

Area of application

  • Chloralkali Electrolysis
  • Chemical synthesis
  • Catalysis and Chemicals Processing
  • Industrial Water Treatment
  • Hydrometallurgy

How to use the product:-

  • Divalent cations are removed from neutralized waters in the follwoing order: Uranium (UO 2) > Lead > Copper > Zinc > Nickel > Cadmium > Cobalt > Magnesium > Strontium > Barium >>> Sodium.
  • Adsorption of trivalent cations takes place, but desorption may be difficult. For instance iron (III) can only be desorbed by uneconomically high amounts of specific acid dosage.

 

CAS Number 

114060 – 55 -8

Synonyms

Weakly acidic chelating grade resin 

Contact

Mark Seah
Sales Manager Southeast Asia

LANXESS Pte. Ltd.

#10-10/13 ICON@IBP Tower B

3A International Business Park

609935 Singapore

Singapore, SG

Phone: +65 6725 5814

Fax: +65 6725 4888

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