LEWATIT® MonoPlus S 100 H

Summary

Product identification

Lewatit® MonoPlus S 100 H is a strongly acidic, gel-form cation exchange resin with a monodisperse bead size distribution based on a styrene-divinylbenzene copolymer. It is supplied in the fully regenerated H⁺ form.

Product description

• Functional group: Sulfonic acid
• Matrix: Cross-linked polystyrene
• Structure: Gel-type beads
• Appearance: Light brown, transparent
• Delivered form: H⁺

Operating limits

• pH range: 0 - 14
• Storage temperature range: -20 - 40 °C
• Storage shelf life: max. 24 months

Feed water

Recommended operating conditions

• Max. operating temperature: 120 °C
• pH operating range: 0 - 14
• Bed height: min. 800 mm (for demineralization), min. 500 mm (for mixed bed)
• Max. pressure drop: 200 kPa
• Max. loading velocity: 60 m/h (100 m/h for fine-purification)
• Backwash velocity (20 °C): approx. 15 - 22 m/h
• Bed expansion (20 °C): approx. 4.5 vol.% per m/h
• Backwash freeboard (external / internal): 60 - 100 vol.%

Product water

Regeneration (Counter-current)

• Regenerant: HCl or H₂SO₄
• Amount:
  • HCl: approx. 50 g/l
  • H₂SO₄: approx. 80 g/l
• Concentration:
  • HCl: 4 - 6 % by weight
  • H₂SO₄: 1.5 / 3 % by weight (progressive regeneration)
• Regeneration velocity:
  • HCl: approx. 5 m/h
  • H₂SO₄: approx. 10 - 20 m/h
• Rinsing velocity: approx. 5 m/h
• Rinse water volume: approx. 2 BV

Regeneration (Co-current)

• Regenerant: HCl or H₂SO₄
• Amount:
  • HCl: approx. 100 g/l
  • H₂SO₄: approx. 150 g/l
• Concentration:
  • HCl: 6 - 10 % by weight
  • H₂SO₄: 1.5 / 3 % by weight (progressive regeneration)
• Regeneration velocity:
  • HCl: approx. 5 m/h
  • H₂SO₄: approx. 10 - 20 m/h
• Rinsing velocity: approx. 5 m/h

Mixed bed regeneration

• Regenerant Amount:
  • HCl: approx. 100 g/l
  • H₂SO₄: approx. 150 g/l
• Concentration:
  • HCl: 4 - 6 % by weight
  • H₂SO₄: 2 - 8 % by weight

Electrical

See the official PDF for exact tabulated values.

Mechanical / hydraulic

• Specific pressure drop (15 °C): approx. 1.0 kPa*h/m²
• Uniformity coefficient: max. 1.1
• Mean bead diameter: 0.62 (±0.05) mm
• Bulk density (±5%): 770 g/l
• Density: approx. 1.22 g/ml
• Water content: 47 - 53 % by weight
• Total capacity: min. 1.8 eq/l
• Volume change H⁺ --> Na⁺: max. 8 Vol.%

Applications

Lewatit® MonoPlus S 100 H is suitable for all demineralization applications. It is particularly advantageous for:

• Demineralization of water for industrial steam generation in co-current and counter-current processes (e.g., WS, LB, RB systems).
• Fine purification as a mixed bed component in conventional mixed bed filters or modern multi-step systems (MS-System) in combination with Lewatit® MonoPlus M 800, Lewatit® MonoPlus M 800 OH, or Lewatit® MonoPlus M 500.

The monodisperse beads lead to lower pressure drops compared to standard ion exchange resins, and a very good regeneration efficiency and high usable capacity enable efficient demineralization.

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