LEWATIT® MonoPlus S 200 KR

Summary

Product identification

Lewatit® MonoPlus S 200 KR is a strongly acidic, premium grade, gel-type cation exchange resin with beads of uniform size (monodisperse). It is supplied in a highly regenerated and purified form, meeting nuclear industry specifications with an extremely low content of desorbable chloride ions.

This resin is noted for its outstanding mechanical and chemical stability, high osmotic stability, and excellent hydrodynamic properties, allowing particularly high flow rates and low pressure losses.

Lewatit® MonoPlus S 200 KR is particularly suitable for:

• Removal of cations, including radioactive isotopes, from aqueous solutions (pH control through adsorption of excess ⁷Li)
• Decontamination of circuits in nuclear reactor plants
• Removal of radioactive cations, with high selectivity for caesium ¹³⁷
• Treatment of primary coolant (e.g., in pressure water reactors)
• Purification of steam generator blowdown, irrespective of conditioning with Levoxin (hydrazine), ethanolamine, or morpholine
• Removal of activated cleavage or corrosion products, including mechanical filtration of suspended impurities
• Polishing in primary and secondary sections as a mixed bed component with Lewatit® MonoPlus M 800 KR.

Note: Rinse carefully with demineralized water prior to service or mixing with Lewatit® MonoPlus M 800 KR.

Specified Data

• Common Description: Strongly acidic, gel-type cation exchange resin, styrene-based, functionalized with sulfonic acid groups. Supplied in H⁺ form.
• Appearance: Dark brown beads.
• Uniformity coefficient: max. 1.1
• Mean bead size (d50): 0.60 ± 0.05 mm
• Total capacity (delivery form): min. 2.1 eq/L
• Ionic conversion H⁺: min. 99.9 % eq.

Typical Physical and Chemical Properties

• Bulk density for shipment: 790 ± 5% g/L
• Density: approx. 1.23 g/mL
• Water retention (delivery form): approx. 45-50 % weight
• Volume change (H⁺ - Na⁺): max. approx. -8 %
• Stability pH range: 0-14
• Friability: min. 95 vol % >200 g/bead
• Storage time (after delivery): max. 1 year
• Storage temperature range: -20 to +40 °C

Operation

• Operating temperature: max. 140 °C
• Operating pH range during exhaustion: 2-14
• Bed depth for single column: min. 800 mm
• Bed depth per component in mixed bed: min. 500 mm
• Backwash bed expansion: 3.5 % per m/h (at 20°C)
• Specific pressure loss: 1 kPa*h/m² (at 15°C)
• Max. pressure loss during operation: 250 kPa
• Specific flow rate: max. 100 BV/h

Regeneration

HCl Regeneration

• Concentration: approx. 4-6 wt. %
• Quantity (co-current): min. 100 g/L resin
• Quantity (counter-current): min. 55 g/L resin

H₂SO₄ Regeneration

• Concentration: approx. 1.5-8 wt. %
• Quantity (co-current): min. 120 g/L resin
• Quantity (counter-current): min. 80 g/L resin

Rinse Procedures

• Regeneration contact time: min. 20 minutes
• Slow rinse at regeneration flow rate: min. 2 BV
• Fast rinse at service flow rate: min. 2 BV

Trace Impurities (max. mg/kg dry resin)

• Na: 50
• Fe: 30
• Cu: 5
• Al: 5
• Co: 5
• Pb: 10
• Hg: 5
• SiO₂: 20
• Organic Chloride: 60

Additional Information & Regulations

• Safety: Avoid contact with strong oxidants. Observe safety data sheet.
• Disposal: Follow European waste nomenclature guidelines.
• Storage: Store under roof, dry, out of direct sunlight, above freezing point. If frozen, thaw gradually at ambient temperature. Packaging stability is limited to 24 months.

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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