LEWATIT® S 5428

Summary

Product identification

Lewatit® S 5228 is a weakly basic, gelular anion exchange resin. It is based on an acrylic-divinylbenzene copolymer with a special bead size distribution.

General Description

• Ionic form as shipped: Free base
• Functional group: Tertiary amine
• Matrix: Crosslinked polyacrylamide
• Structure: Gel
• Appearance: Ivory-coloured, translucent

Physical and Chemical Properties

• Uniformity Coefficient: max. 1.8
• Effective size: 0.55 (+/- 0.05) mm
• Bulk density: 680 (+/- 5 %) g/l
• Density: approx. 1.07 g/ml
• Water retention: 56 - 62 wt. %
• Total capacity: min. 1.5 eq/l
• Volume change (free base --> Cl⁻): max. 25 vol. %
• Stability at pH-range: 0 - 14
• Storability (product): max. 2 years
• Storability temperature range: -20 - 40 °C

Recommended Operating Conditions

• Operating temperature: max. 40 °C
• Operating pH-range: 0 - 8
• Bed depth: min. 800 mm
• Specific pressure drop (15 °C): approx. 1.1 kPa·h/m²
• Pressure drop: max. 150 kPa
• Linear velocity (operation): max. 50 m/h
• Linear velocity (backwash, 20 °C): approx. 9 m/h
• Bed expansion (20 °C, per m/h): approx. 15 vol. %
• Freeboard (backwash, extern / intern): 100 vol. %
• Regenerant: NaOH
• Counter current regeneration level: approx. 50 - 70 g/l
• WS-System concentration: approx. 2 - 4 wt. %
• Linear velocity (regeneration): approx. 5 m/h
• Linear velocity (rinsing): approx. 5 m/h
• Rinse water requirement (slow / fast): approx. 10 - 16 BV

Applications

Lewatit® S 5228 is particularly suitable for:

• Demineralization of aqueous solutions such as gelatine, fruit juices, whey, and food acids, operated with co-current or modern counter-current systems (e.g., Lewatit® WS System).
• Removing of organic matter.

Additional Information & Regulations

• Safety precautions: Strong oxidants (e.g., nitric acid) can cause violent reactions. Safety data sheets must be observed for 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: Store above the freezing point of water, under roof, in dry conditions, without direct sunlight. If frozen, allow to thaw gradually at ambient temperature before handling or use.

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