LEWATIT® MonoPlus M 800 KR

Summary

Product identification

Lewatit® MonoPlus M 800 KR is a strongly basic, premium grade, gel-type anion exchange resin with beads of uniform size (monodisperse). It is in a highly regenerated form (min. 95% OH⁻) and purified for nuclear industry specifications.

Applications

Lewatit® MonoPlus M 800 KR is 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 or Lewatit® MonoPlus S 200 KR.

Note: Rinse carefully with demineralized water prior to service or mixing with other Lewatit® resins.

Physical and Chemical Properties

• Ionic form as shipped: OH⁻
• Functional group: Quaternary amine, type I
• Matrix: Crosslinked polystyrene
• Structure: Gel type beads
• Appearance: Light amber, translucent
• Uniformity Coefficient: max. 1.1
• Mean bead size: 0.64 ± 0.05 mm
• Bulk density: 680 ± 5% g/l
• Density: approx. 1.07 g/ml
• Water retention: 60 - 65 wt. %
• Total capacity: min. 1.2 eq/l
• Volume change (OH⁻ --> Cl⁻): max. -18 vol. %
• Stability (pH-range): 0 - 14
• Friability: min. 95 vol. % (> 200 g/bead)
• Storability: max. 12 months at -20 - 40 °C

Ionic Conversion

• OH⁻: min. 95 eq%
• CO₃²⁻: max. 5 eq%
• Cl⁻: max. 0.2 eq%
• SO₄²⁻: max. 0.1 eq%

Trace Elements Analysis (max. mg / kg dry resin)

• Na: 20
• Ca: 50
• K: 20
• Fe: 50
• Cu: 10
• Al: 40
• Co: 10
• Pb: 10
• Hg: < 1
• SiO₂: 100
• Sulfate: 500

Recommended Operating Conditions

• Operating temperature: max. 70 °C
• Operating pH-range: 0 - 12
• Bed depth: min. 800 mm
• Specific pressure drop (15 °C): approx. 1.0 kPa*h/m²
• Pressure drop: max. 200 kPa
• Linear velocity (operation): 5 - 120 m/h (up to 100 m/h for polishing)
• Linear velocity (backwash, 20 °C): approx. 7 m/h
• Bed expansion (20 °C, per m/h): approx. 11 vol. %
• Freeboard (backwash): 80 - 100 vol. %

Mixed Bed Operation

• Bed depth: min. 600 mm
• Regenerant type: NaOH
• Regenerant level: approx. 100 g/l
• Regenerant concentration: approx. 5 - 10 wt. %
• Rinse water requirement (slow / fast): approx. 2 / 5 BV

Safety Precautions

• Strong oxidants can cause violent reactions.
• Observe the safety data sheet for product description, transport, storage, handling, safety, and ecology.

Storage

Store above freezing point, in dry conditions without direct sunlight. If frozen, thaw gradually at ambient temperature before use.

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Disclaimer: 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