Specialty Ion Exchange Resin for Metallic Cadmium(Cd) Adsorption/Removal


KP-758 is a macroporous styrene-based ion exchange resin with special chelating functional groups by advanced R&D technology. Within the solutions where multi-valences of metallic ions exist, it only binds to the metallic ions whose valences are greater than or equal to divalence to form stable complexes. It is mainly used for the removal of calcium and magnesium impurities in salt solution which is prepared for alkali production by ionic membrane method in chlor-alkali industries.

Owing to its special chelating functional groups, KP-758 model performs strong adsorbability and rather high selectivity to metallic cations. And its weak-acid property also empowers it with more thorough exchange capacity and rinse effect, following the induced high regeneration efficiency from reversible reactions.

Considering the increasing order of affinity to metallic cations that its functional groups avail to, KP-758 is designed peculiarly in adsorbing divalent cadmium cations(Cd2+) from weak-acid to weak-base solutions whose PH value ranges from 2 to 9, which is mainly used to separate metallic lead ions within the applications of wastewater treatment and clean energy recovery within petrochemical &neo-energy industry, especially in nickel-cadmium battery field for cadmium recycling & reusage.

Physical form: Spherical beads
Moisture holding capacity(%): 55 to 65%
Total bulk exchange capacity: ≥1.90mmol/ml
Moisture true density: 1.15~1.20g/mL
Moisture bulk density: 0.76~0.85g/mL
Effective particle size: 0.40~0.70mm
Particle size: 0.415~1.25mm
Uniformity coefficient: ≤1.6
Integrated beads ratio after grinding test: ≥90℅
Maximum operating temperature: 80°C
Minimum bed depth: 700mm
Service flow rate: 5~25 BV*/h
Maximum service velocity: 40 m/h
Regenerant: NaOH
Level(Counted by 100%): 60~150g/L
Concentration: 2~4℅
Flow rate: 2~8 BV*/h
Minimum contact time: 40min
Slow rinse: 5~8 BV at regeneration flow rate
Fast rinse: 10~20 BV at service flow rate
*1 BV(Bed Volume)= 1 solution per resin