LEWATIT® TP 207

Summary

Product Identification

• Product Name: Lewatit® TP 207
• Common Description: Weakly acidic, macroporous cation exchange resin
• Functional Group: Iminodiacetic acid
• Matrix: Styrenic
• Structure: Macroporous
• Delivery Form: Na⁺
• Appearance: Beige, opaque

Operating Limits

• Stability pH range: 0-14
• Stability temperature range: 1-80 °C
• Storage temperature range: -20 - +40 °C
• Operating temperature (max.): 80 °C
• Operating pH range during exhaustion: 1.5-9

Feed Water (Implied Application)

Lewatit® TP 207 is designed for the selective extraction of heavy metal cations from weakly acidic to weakly basic solutions. It removes divalent cations from neutralized waters in the following order (decreasing affinity):

Copper > Vanadium (VO₂²⁺) > Uranium (UO₂²⁺) > Lead > Nickel > Zinc > Cadmium > Cobalt > Iron (II) > Beryllium > Manganese >> Calcium > Magnesium > Strontium > Barium >>> Sodium.

It is suitable for applications including:

• Selective removal of metal contaminants from processing baths.
• Concentration, extraction, and recovery of heavy metals from hydrometallurgical solutions.
• Recovery of useful metals from electroplating rinse waters.
• Selective trace removal of heavy metals from industrial metal surface finishing effluents, even in the presence of high calcium concentrations.
• Selective removal of heavy metals from contaminated ground and wastewater streams for potable water production and groundwater remediation.

The resin's selective extraction is also achieved in the presence of complexing agents such as nitrogen compounds (e.g., ammonia, aliphatic and aromatic amines), multivalent carboxylic acids (e.g., citric, gluconic, tartaric, oxalic acid), and phosphates (e.g., sodium polyphosphate, tetrasodium diphosphate).

Product Water (Implied Application)

See the official PDF for exact tabulated values.

Electrical

No information available in the extract.

Mechanical / Hydraulic

• Uniformity coefficient (max.): 1.7
• Range of size for >90 vol% of all beads: 0.4-1.25 mm
• Effective size (d₁₀): 0.55 (± 0.05) mm
• Total capacity (H⁺ form) (min.): 2.2 eq/L
• Bulk density for shipment (± 5%): 720 g/L
• Density (approx.): 1.19 g/mL
• Water retention (delivery form) (approx.): 48-56 % by weight
• Volume change (Na⁺ - H⁺) (max. approx.): -30 %
• Bed depth for single column (min.): 1000 mm
• Backwash bed expansion (per m/h at 20°C): 4 %
• Specific pressure loss (at 15°C): 1.1 kPa*h/m²
• Max. pressure loss during operation: 250 kPa
• Specific flow rate (max.): 5-25 BV/h
• Freeboard during backwash (min.): 80 vol. %

Regeneration

• Regeneration contact time (min.): 20 minutes
• Slow rinse at regeneration flow rate (min.): 5 BV
• Fast rinse at service flow rate (min.): 5 BV

HCl Regeneration

• Concentration (approx.): 4-10 wt. %
• Quantity co-current (min.): 150 g/L resin

H₂SO₄ Regeneration

• Concentration (approx.): 10 wt. %
• Quantity co-current (min.): 210 g/L resin

HNO₃ Regeneration

• Concentration (approx.): 12 wt. %
• Quantity co-current (min.): 250 g/L resin

Conditioning

• Conditioning contact time: 20 minutes
• Slow rinse at conditioning flow rate: 5 BV
• Fast rinse at service flow rate: 5 BV

NaOH Conditioning

• Concentration (approx.): 4 wt. %
• Quantity (min.): 80-96 g/L resin

Additional Information

• Safety Precautions: Strong oxidants, e.g., nitric acid, can cause violent reactions. Observe the safety data sheet.
• Disposal: Dispose of according to European waste nomenclature.
• Storage: Recommended above freezing point, under roof, dry, away from direct sunlight. Frozen resin should thaw gradually at ambient temperature.
• Packaging Stability: Limited to 24 months under recommended storage conditions. Check packaging condition regularly if used beyond this period.

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