LEWATIT® MonoPlus TP 208

Summary

Product identification

Lewatit® MonoPlus TP 208 is a weakly acidic, macroporous cation exchange resin with chelating iminodiacetic acid groups. It is designed for the selective removal of alkaline earth cations.

Common Description

• Delivery form: Na⁺
• Functional group: Iminodiacetic acid
• Matrix: Styrenic
• Structure: Macroporous
• Appearance: Beige, opaque

Specified Data

• Uniformity coefficient: max. 1.1
• Mean bead size (d₅₀): 0.65 (+/- 0.05) mm
• Total capacity (H⁺ form): min. 2.5 eq/L

Typical Physical and Chemical Properties

• Bulk density for shipment (+/- 5%): 700 g/L
• Density (approx.): 1.19 g/mL
• Water retention (delivery form, approx. weight %): 58-64 %
• Volume change (Na⁺ - H⁺, max. approx.): -30 %
• Stability pH range: 0-14
• Stability temperature range: 1-80 °C
• Storage temperature range: -20 - +40 °C

Operation

• Operating temperature (max.): 80 °C
• Operating pH range during exhaustion: 2-12
• Bed depth for single column (min.): 1000 mm
• Backwash bed expansion per m/h (20°C): 5 %
• Specific pressure loss (15°C): 1.0 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 (min.): 4 BV

Conditioning

• NaOH conditioning concentration (approx. wt. %): 4 %
• NaOH conditioning, di-Na⁺ quantity (min.): 80-96 g/l resin
• Conditioning contact time (min.): 20 minutes
• Slow rinse at conditioning flow rate (min.): 4 BV

Applications

Lewatit® MonoPlus TP 208 is particularly suitable for the adsorption of alkaline earth and heavy metal cations from diluted and concentrated brine solutions.

• Fine polishing of brine fed to chloralkali membrane cells, e.g., by removal of Ca²⁺, Mg²⁺, Ba²⁺, Sr²⁺; also in the presence of Fe³⁺ ions.
• Removal and recovery of heavy metals out of process, waste and potable water streams. The order of removal (decreasing affinity) from neutralized waters is: Copper > Vanadium (VO₂²⁺) > Uranium (UO₂²⁺) > Lead > Nickel > Zinc > Cadmium > Cobalt > Iron (II) > Beryllium > Manganese >> Calcium > Magnesium > Strontium > Barium >>> Sodium.

Storage and Handling

• Recommended storage is above freezing point of water, under roof, in dry conditions without direct sunlight.
• If frozen, allow to thaw gradually at ambient temperature before handling or use. Do not attempt to accelerate thawing.
• Packaging stability is limited to 24 months under recommended storage conditions. Use within this timeframe or check packaging condition regularly.
• Safety precautions: Avoid contact with strong oxidants like nitric acid, which can cause violent reactions. Observe the safety data sheet for transport, storage, handling, safety, and ecology.
• Disposal according to European waste nomenclature is required.

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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