Macroporous Weak-Base Styrene Series Anion Exchange Resin with Chelating Bispicolylamine Groups for Copper, Nickel, Cobalt Adsorption/Removal


D720 is a macroporous styrene-based weak-base anion exchange resin with coordinating amine groups. With its active chelating bispicolylamine functional groups, this resin model performs well in removing heavy metal ions in acidic solutions.

Specifically, its advantage of highly firm structure and excellent chemical stability, large mesh size & chelating exchange capacity as well as its fast adsorption velocity and high adsorption capacity qualify D720 quite well to adsorb or remove Copper, Nickel, Cobalt and Ferric ions, particularly suitable for strong-acid solutions(PH<2).

Moreover, compared with congeneric weak-base resin products, D720 receives high credits for its high elution rate of regeneration, high mechanical &crushing resistance strength, and foremost fine permeation resistance, which ensures full integrity of resin particles in operation, low operating costs,
low broken rate of beads in long-term use and so as to minimize the annual replenishment rate of resin.

Matrix: Styrene-divinylbenzene Copolymer
Functional group: Bispicolylamine
Physical form: Beige opaque spherical beads
Moisture holding capacity(%): 45 to 60%
Ionic form as shipped: SO42-
Total bulk exchange capacity: ≥1.3mmol/mL
Copper(Cu) adsorption capacity: ≥30g/L
Moisture true density: 1.10~1.18g/mL
Moisture bulk density: 0.65~0.75g/mL
Particle size: 0.315~1.25mm(≥95%)
Uniformity coefficient: ≤1.1
Integrated beads ratio after grinding test: ≥95℅
Max Swelling Rate of Resin after Ion Transition: SO42-->OH ≤ 40%
Maximum operating temperature: 70°C
Minimum bed depth: 800mm
Service flow rate: 1~5 BV*/h
Applicable PH range: 0~14
Regenerant: NaOH(Transition Agent) H2SO4 (Eluent)
Level(Counted by 100%): 50-100g/L 180~220g/L
Concentration: 4~5℅10~20℅
Flow rate: 1~2 BV/h1~2 BV/h
Minimum contact time: 30min30min
Slow rinse: 2 BV/h
Fast rinse: 5~10 BV/h
*1 BV(Bed Volume)= 1 solution per resin