LEWATIT® S 2568 H

Summary

Product identification

• Product Name: Lewatit® S 2568 H
• Type: Strongly acidic cation exchange resin
• Structure: Macroporous, monodisperse, based on a styrene-divinylbenzene copolymer
• Functional Group: Sulfonic acid
• Delivery Form: H⁺

Applications

Lewatit® S 2568 H is especially applicable for:

• Decationization of solutions of organic products (e.g., sugar beet, sugar cane, starch sugar, glycerine, gelatin, food acids).
• Extraction of amino acids (e.g., lysine).
• Mixed bed polishing.

Key Features

• High exchange flow rates during regeneration and loading.
• Good utilization of capacity.
• Low rinse water demand.
• Homogeneous throughput of regenerants, water, and solutions, resulting in a homogeneous working zone.
• Nearly linear pressure drop gradient for the whole bed depth, enabling operation with higher bed depth.
• Good separation behavior of components in mixed bed applications.

Operating Limits

• pH Range (Stability): 0-14
• Temperature Range (Stability): 1-120 °C
• pH Range (Operating during exhaustion): 0-14
• Maximum Operating Temperature: 120 °C
• Maximum Pressure Loss during Operation: 300 kPa

Feed Water / Solution Characteristics

• Food Grade: Yes

Product Water / Treated Solution Characteristics

• Potable Water Treatment: Applicable, with special care during initial cycles. Refer to recommended start-up conditions.

Electrical

• No information available in the extract.

Mechanical / Hydraulic

• Bulk Density for Shipment: Approx. 720 g/L
• Density: Approx. 1.2 g/mL
• Water Retention (delivery form): Approx. 55-61 % by weight
• Volume Change (Na⁺ - H⁺): Max. 10 %
• Minimum Bed Depth (single column): 800 mm
• Minimum Bed Depth (component in mixed bed): 500 mm
• Backwash Bed Expansion (per m/h at 20°C): 4 %
• Specific Pressure Loss (at 15°C): 0.8 kPa*h/m²
• Maximum Flow Rate: 5 BV/h
• Freeboard during Backwash: 80-100 vol. %

Regeneration

• Regeneration Agents and Quantities:
  • HCl:
    • Concentration: Approx. 4-6 wt. %
    • Quantity (co-current): Min. 100 g/L resin
    • Quantity (counter-current): Min. 55-65 g/L resin
  • H₂SO₄:
    • Concentration: Approx. 1.5-3 wt. %
    • Quantity (co-current): Min. 150 g/L resin
    • Quantity (counter-current): Min. 100 g/L resin
  • NaCl:
    • Concentration: Approx. 8-10 wt. %
    • Quantity (co-current): Min. 200 g/L resin
    • Quantity (counter-current): Min. 100 g/L resin
• Regeneration Contact Time: Min. 20 minutes
• Slow Rinse: Min. 2 BV at regeneration flow rate
• Fast Rinse: Min. 4 BV at service flow rate

Specified Data

• Uniformity Coefficient: Max. 1.1
• Mean Bead Size (d₅₀): 0.62-0.72 mm
• Total Capacity (delivery form): Min. 1.6 eq/L

Storage and Handling

• Storage Temperature Range: -20 - +40 °C
• Recommended Storage Conditions: Above freezing point of water, under roof, dry, without direct sunlight.
• Storage Time: Max. 2 years (packaging stability).
• Freezing: If frozen, thaw gradually at ambient temperature. Do not accelerate thawing.
• Safety: Observe Safety Data Sheet. Avoid contact with strong oxidants like nitric acid.
• Disposal: According to European waste nomenclature in the EU.

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