LEWATIT® MDS TP 260

Summary

Product Identification

• Product Name: Lewatit® MDS TP 260
• Product Type: Weakly acidic, macroporous cation exchange resin with chelating amino methyl phosphonic acid groups.
• Description: Small bead variant of Lewatit® MonoPlus TP 260 with excellent kinetic performance. Designed for selective removal of heavy metal and alkaline earth cations.
• Delivery Form: Na⁺ form
• Functional Group: Aminomethylphosphonic acid
• Matrix: Styrenic
• Structure: Macroporous
• Appearance: Beige, opaque

Operating Limits

• Stability pH Range: 0-14
• Stability Temperature Range: 1-80 °C
• Storage Temperature Range: -20 - +40 °C
• Operating Temperature (max.): 80 °C
• Operating pH Range (during exhaustion): 1-12

Feed Water / Application Notes

• Selective Removal Order (decreasing affinity): Uranium (UO₂²⁺) > Lead > Copper > Zinc > Nickel > Cadmium > Cobalt >> Calcium > Magnesium > Strontium > Barium >>> Sodium.
• Suitable Applications:
  • Fine polishing of brine fed to chloralkali membrane cells (removal of Ca²⁺, Mg²⁺, Ba²⁺, Sr²⁺; in the absence of Fe³⁺ ions)
  • Antimony (Sb) and bismuth (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 BF₄⁻ containing wastewater from PCB production
  • Removal of iron(II), nickel and zinc from 5% gluconate containing liquid metal working solutions
• Note on Smaller Bead Size: Requires adaptation of linear velocity and duration for backwash, downflow conditioning, and suspended solid load control.
• Advantages in Secondary Brine Purification (vs. Lewatit® MonoPlus TP 260 and Lewatit® TP 260):
  • Up to 100% higher operating capacity without additional regenerant chemicals
  • Lower leakage levels
  • Improved Strontium and Barium removal efficiency

Specified Data

• Uniformity Coefficient (max.): 1.15
• Mean Bead Size (d₅₀): 0.40 mm (± 0.04 mm)
• Total Capacity (H⁺ form) (min.): 3.0 eq/L

Typical Physical and Chemical Properties

• Bulk Density (for shipment, ± 5%): 740 g/L
• Density (approx.): 1.21 g/mL
• Water Retention (delivery form, approx. weight %): 63 %
• Volume Change (Na⁺ - H⁺) (max. approx. %): -35 %

Mechanical / Hydraulic

• Bed Depth (for single column, min.): 1000 mm
• Backwash Bed Expansion (per m/h at 20°C): 15 %
• Specific Pressure Loss (at 15°C): 3.0 kPa*h/m²
• Max. Pressure Loss (during operation): 250 kPa
• Specific Flow Rate (max.): 5-25 BV/h
• Freeboard (during backwash, min. vol. %): 100 %

Regeneration

• HCl Regeneration Concentration (approx. wt. %): 4-10 %
• HCl Regeneration Quantity (co-current, min.): 150 g/L resin
• Regeneration Contact Time (min.): 20 minutes
• Slow Rinse (at regeneration flow rate): 4 BV

Conditioning

• NaOH Conditioning Concentration (approx. wt. %): 4 %
• NaOH Conditioning Quantity (Di-Na⁺, min.): 80-96 g/L resin
• Conditioning Contact Time (min.): 20 minutes
• Slow Rinse (at conditioning flow rate): 4 BV

Additional Information

• Safety: Avoid contact with strong oxidants like nitric acid. Observe Safety Data Sheet.
• Disposal: Follow European waste nomenclature guidelines.
• Storage: Store dry, under roof, above freezing point, and out of direct sunlight. If frozen, allow to thaw gradually at ambient temperature before handling or use.
• Packaging Stability: Limited to 24 months under recommended storage conditions. Check packaging condition regularly if used beyond this period.

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Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror