Ambersep GT74

Summary

Product identification

AMBERSEP™ GT74 is an industrial-grade complexing resin. It is a weakly acidic cation exchange resin with high selectivity for certain metal ions.

Properties

• Matrix: Macroporous styrene copolymer
• Functional groups: Thiol
• Physical form: Beads
• Ionic form as shipped: H⁺
• Total exchange capacity: ≥ 1.30 eq/L (SH form)
• Moisture holding capacity: 48 to 55 % (H form)
• Shipping weight: 785 g/L (49.0 lb/ft³)
• Particle size:
  • Harmonic mean size: 0.450 - 0.700 mm
  • Uniformity coefficient: ≤ 1.8
  • Fines content (< 0.425 mm): 12 % max
  • Coarse beads (> 0.850 mm): 15 % max

Suggested Operating Conditions

• Maximum operating temperature: 60°C (140 °F)
• Minimum bed depth: 1 m (39 inches)
• Service flow rate: 10 BV/h (1.25 gpm/ft³)
• Regenerant: Concentrated hydrochloric acid
• Rinse requirements: 2 to 3 BV* (15 to 22.5 gal/ft³)
• Backwash flow rate: About 12 m/h (5 gpm/ft²) with water at 20°C (68 °F)

*1 BV (Bed Volume) = 1 m³ solution per m³ resin

Selectivity

AMBERSEP GT74 exhibits high selectivity for certain metal ions, including Hg, Ag, Cu, Pb, and Cd. The selectivity sequence is: Hg > Ag > Cu > Pb > Cd > Ni > Co > Fe > Ca > Na. This resin is effective for removing mercury from solutions and gaseous streams and can be efficiently regenerated with hydrochloric acid. It is stable over the entire pH range, but oxidizing media should be avoided.

Example Application: Removal of lead from wastewater Influent:

• Pb⁺⁺: 6 ppm
• Sb⁺⁺⁺: 0.3 ppm
• Na⁺: 100 ppm
• pH: 2.5

The treated solution showed less than 0.01 ppm Pb in the effluent after passing through a column of AMBERSEP GT74 at a flow rate of 15 m/h (6 gpm/ft²). The effluent composition remained unchanged after 700 bed volumes.

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