LEWATIT® MonoPlus M 800 KRi

Summary

Product Identification

Lewatit® MonoPlus M 800 KRI is a strongly basic, premium grade, gel-type anion exchange resin with beads of uniform size (monodisperse). It is supplied in a highly regenerated and purified OH⁻ form with extremely low content of desorbable chloride ions, meeting nuclear industry specifications.

Applications

Lewatit® MonoPlus M 800 KRI is particularly suitable for:

• Removal of anions, including radioactive isotopes, from aqueous solutions (including boric acid).
• Decontamination of circuits in nuclear reactor plants.
• Treatment of primary coolant, e.g., in pressure water reactors.
• Purification of steam generator blow down, irrespective of conditioning with Levoxin (hydrazine), ethanolamine, or morpholine.
• Polishing in primary and secondary sections as a mixed bed component with Lewatit® MonoPlus SP 112 KR, Lewatit® MonoPlus S 200 KR, or Lewatit® MonoPlus S 215 KR.

Specified Data

• Common Description: OH⁻
• Functional group: Quaternary ammonium, Type 1
• Matrix: Styrenic
• Structure: Gel
• Appearance: Light brown, translucent
• Uniformity coefficient: max. 1.1
• Mean bead size (d₅₀): 0.64 (±0.05) mm
• Total capacity (delivery form): min. 1.2 eq/L

Typical Physical and Chemical Properties

• Bulk density for shipment (±5%): approx. 680 g/L
• Density: approx. 1.07 g/mL
• Water retention (delivery form): approx. 56-63 weight %
• Volume change (OH⁻ - Cl⁻): max. -22 %
• Stability pH range: 0-14
• Storage time (after delivery): max. 1 year
• Storage temperature range: -20 to +40 °C
• Friability: > 200 g/bead
• Ionic conversion OH⁻: min. 95 eq. %
• Ionic conversion CO₃²⁻: max. 5 eq. %
• Ionic conversion Cl⁻: max. 0.2 eq. %
• Ionic conversion SO₄²⁻: max. 0.3 eq. %

Operation

• Operating temperature: max. 70 °C
• Operating pH range during exhaustion: 0-12
• Bed depth for single column: min. 800 mm
• Bed depth per component in mixed bed: min. 500 mm
• Backwash bed expansion (per m/h at 20°C): approx. 10 %
• Specific pressure loss (at 15°C): 1 kPa*h/m²
• Max. pressure loss during operation: 250 kPa
• Specific flow rate: max. 100 BV/h

Trace Impurities (max. mg/kg dry resin)

• Na: 20
• Fe: 30
• Cu: 5
• Al: 5
• Co: 5
• Pb: 10
• Hg: 5
• SiO₂: 50
• Organic Chloride: 500
• SO₄²⁻ as Sulphur: 600

Additional Information & Regulations

Safety Precautions

Strong oxidants, e.g., nitric acid, can cause violent reactions if they come into contact with ion exchange resins. Observe the safety data sheet for additional information on product description, transport, storage, handling, safety, and ecology.

Disposal

In the European Community, ion exchange resins must be disposed of according to the European waste nomenclature.

Storage

It is recommended to store ion exchange resins at temperatures above the freezing point of water, under roof, in dry conditions, and without exposure to direct sunlight. If resin becomes frozen, it should thaw gradually at ambient temperature without mechanical handling and must be completely thawed before use. Do not accelerate the thawing process.

Packaging

Packaging stability is limited to 24 months under recommended storage conditions. It is advised to use the product within this timeframe or to check the packaging condition regularly.

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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