LEWATIT® S 6328 A

Summary

Product identification

Lewatit® S 6328 A is a food-grade, strongly basic, macroporous type I anion exchange resin based on crosslinked polystyrene. It is bead-shaped with a special bead size distribution.

Applications

This resin is suitable for use in various Lewatit systems, including:

• Lewatit® WS system (fluidised bed)
• Lewatit® VWS system (compound fluidised bed)
• Lewatit® liftbed system
• Standard co-current regenerated systems

Lewatit® S 6328 A in chloride form is recommended for the decolorisation of:

• Juices from sugar production, especially beet sugar.
• Solutions of organic products such as glycerin and amino acids.

It is also suitable for the complete and rapid removal of relatively high concentrations of organic substances from potable water and other aqueous solutions. It can be used in combination with other Lewatit adsorption resins for simultaneous fine polishing.

Physical and Chemical Properties

• Ionic form as shipped: Cl⁻
• Functional group: Quaternary amine, type I
• Matrix: Crosslinked polystyrene
• Structure: Macroporous
• Appearance: Beige, opaque
• Uniformity Coefficient: max. 1.6
• Bead size: > 90 % from 0.4 to 1.2 mm
• Effective size: 0.55 (+/- 0.05) mm
• Bulk density: 660 (+/- 5 %) g/l
• Density: approx. 1.06 g/ml
• Water retention: 58 - 63 wt. %
• Total capacity: min. 1.0 eq/l
• Volume change (Cl⁻ --> OH⁻): max. 20 vol. %
• Stability (pH-range): 0 - 14
• Storability: max. 2 years
• Storage temperature range: -20 to 40 °C

Recommended Operating Conditions

• Operating temperature: max. 85 °C
• Operating pH-range: 0 - 12
• Bed depth: min. 800 mm
• Specific pressure drop (at viscosity 1 mPa·s): approx. 1.1 kPa·h/m²
• Pressure drop: max. 250 kPa
• Linear velocity (operation): max. - m/h
• Linear velocity (backwash, 20 °C): approx. 6 - 8 m/h
• Bed expansion (20 °C, per m/h): approx. 12 vol. %
• Freeboard (backwash, extern / intern): 80 - 100 vol. %

Regeneration

• Regenerant: NaCl + NaOH
• Counter current regeneration level:
  • NaCl: approx. 200 g/l
  • NaOH: 10 - 20 g/l
• Counter current regeneration concentration:
  • NaCl: 10 wt. %
  • NaOH: 1 - 2 wt. %
• Co-current regeneration level:
  • NaCl: approx. 200 g/l
  • NaOH: 10 - 20 g/l
• Co-current regeneration concentration:
  • NaCl: approx. 10 wt. %
  • NaOH: 1 - 2 wt. %
• Linear velocity (regeneration): approx. 5 m/h
• Linear velocity (rinsing): approx. 5 m/h
• Rinse water requirement (slow / fast): approx. 5 BV

Additional Information & Regulations

• Safety: Strong oxidants can cause violent reactions with ion exchange resins. Observe the Safety Data Sheet.
• Disposal: Dispose according to European waste nomenclature.
• Storage: Store above freezing point, under roof, in dry conditions, away from direct sunlight. If frozen, thaw gradually at ambient temperature before handling or use.

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