Lewatit®

LEWATIT® MDS TP 260

Lewatit® MDS TP 260 is a weakly acidic, macroporous cation exchange resin with chelating amino methyl phosphonic acid groups designed for the selective removal of heavy metal and alkaline earth cations. lt is a small bead variant of Lewatit® MonoPlus TP 260 with excellent kinetic performance. Divalent cations are removed from neutralized waters in following order (decreasing affinity):


Uranium (U022+ > Lead > Copper > Zinc > Nickel > Cadmium > Cobalt » Calcium > Magnesium > Strontium > Barium >» Sodium.


The monodisperse, uniform sized beads of Lewatit® MDS TP 260 are mechanically and osmotically more stable than ion exchange resin beds with a heterodisperse bead size distribution. Additionally they offer superior kinetic behavior which leads to faster uptake of cations and a better utilization of capacity. Due to its modified polymer structure and substitution grade it is suitable for the following applications:

  • fine polishing of brine fed to chloralkali membrane cells, e.g. by removal of Ca2+, Mg2+, Ba2+, Sr2+; in the absence of Fei3+-ions
  • antimony (Sb) and tungsten (Bi) removal from copper containing electrolyte
  • uranium (U) removal from crude phosphoric acid
  • titanium (Ti) removal from recycled battery acid
  • aluminum (Al) removal from urea solutions
  • lead (Pb) and strontium (Sr) removal from BF,- containing waste water out of PCB production
  • removal of iron(II), nickel and zinc from 5 % gluconate containing liquid metal working solutions


Smaller bead size requires adaption of the linear velocity and duration for backwash, downflow conditioning and suspended solid load control.


Note:


In secondary brine purification of brine fed to chloralkali electrolyzer membranes Lewatit® MDS TP 260 offers following advantages compared to the standard Lewatit® MonoPlus TP 260 and Lewatit® TP 260:

  • up to 100 % higher operating capacity without requiring additional regenerant chemicals
  • lower leakage levels
  • improved Strontium and Barium removal efficiency
Product Group: Cationic
Applications
  • Chemical Industry
  • Flue Gas
  • Industrial water
  • Metal industry
  • Purification
  • Recycling
  • Removal
  • Softening
  • Waste water treatment
  • Water Treatment

Technical Data sheet

Safety data sheet

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