LEWATIT® MP 62 WS

Summary

Product identification

• Product name: Lewatit® MP 62 WS
• Common Description: Weakly basic, macroporous anion exchange resin with tertiary amino groups (monofunctional), of particularly low basicity.
• Functional group: Tertiary amine
• Matrix: Styrenic
• Structure: Macroporous
• Delivery form: Free base
• Appearance: Beige, opaque

Applications

• Use in Lewatit® WS Systems
• Use in Lewatit® VWS Systems
• Groundwater and surface water decontamination (e.g., chromate (CrO₄²⁻), natural organic matter (NOM), heavy metal cyanides)
• Recovery of noble metals (e.g., gold (Au) and silver (Ag) from cyanide solutions)
• Deacidification of organic process streams (e.g., esters, ethers, aromatic hydrocarbons)
• Removal of Bisphenol-A from waste water streams
• Purification of organic process streams

Operating limits

• Stability pH range: 0-14
• Stability temperature range: 1-130 °C
• Operating temperature (max): 130 °C
• Operating pH range during exhaustion: 0-8
• Storage temperature range: -20 - +40 °C

Feed water / Product water

• Total capacity (delivery form): min. 1.7 eq/L

Electrical

• See the official PDF for exact tabulated values.

Mechanical / hydraulic

• Uniformity coefficient (max.): 1.6
• Range of size for >90 vol% of all beads: 0.40-1.25 mm
• Effective size (d₁₀): 0.55 (± 0.05) mm
• Bulk density for shipment (± 5%): 620 g/L
• Density (approx.): 1.03 g/mL
• Water retention (delivery form) (approx.): 50-55 % by weight
• Volume change (free base - Cl⁻) (max. approx.): 45 %
• Bed depth for single column (min.): 800 mm
• Backwash bed expansion per m/h (20°C) (%): 30 %
• Max. pressure loss during operation: 250 kPa
• Specific flow rate (max.): 20 BV/h
• Freeboard during backwash (min. vol. %): 100-120 %

Regeneration

• NaOH regeneration concentration (approx. wt. %): 2-6 %
• NaOH regeneration quantity co-current (min.): 80 g/L resin
• NaOH regeneration quantity counter-current (min.): 60 g/L resin
• Regeneration contact time (min.): 30 minutes
• Slow rinse at regeneration flow rate (min.): 2 BV
• Fast rinse at service flow rate (min.): 4 BV

Additional Information

• Special care is recommended during backwash due to low density to avoid resin loss.
• Packaging stability: Limited to 24 months under recommended storage conditions.
• Safety: Observe the safety data sheet. Strong oxidants can cause violent reactions.
• Disposal: According to European waste nomenclature.
• Storage: Store above freezing point, under roof, dry, away from direct sunlight. Thaw frozen resin gradually at ambient temperature.

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