CWA 92D

Macroporous Weak Acid Cation Exchange Resin

DOSHION CWA 92D is a high capacity macroporous type Polyacrylic weak acid cation exchange resin. It is insoluble in acids, alkalis and all common solvents.
The Characteristics of CWA 92D:
• Excellent selectivity for heavy metals
• Used as an economic replacement of chelating resin in some industries
• Used in dealkalisation in domestic applications
PROPERTIES
Matrix Cross linked Polystyrene Macroporous
Functional group -COO – Carboxylic Acid
Ionic Form H+ -Hydrogen
Physical Form Spherical Beads
Particle size (mm) 0.30- 1.25
Moisture Content % 45 – 53
Total Exchange Capacity (eq/L) (min) 4.0
Bulk Density / Shipping Weight (gm/L) 740-800
Homogeneous Coefficient (max) 1.6
Reversible Swelling (H+ to Na+ )%(max) 65
Solubility in common solvents Insoluble
SUGGESTED OPERATING CONDITIONS
Minimum Bed Depth cm 75
Operating pH Range 0-14
Regenerant Concentration % 2-4(HCl)
Regenerant Flow Rate *BV/hr 4 – 8
Regenerant Contact Time Minutes 30-60
Regeneration Level Kg  per M3  of Resin 40-150 (HCl)
Displacement Rinse Rate *BV/hr 4 –  8
Displacement Rinse Volume #BV 1.5 – 2.0
Fast Rinse Rate *BV/hr 10-20
Fast Rinse volume #BV 4 – 10
Service flow rate *BV/hr 5-40

* Bed Volumes/Hour #Bed Volumes

Pharma Polymer (23)

Ion Exchange Resin (36)

Cation Exchange Resins (8)

Strong Acid Cation (5)

Gel (4)

Macroporous (1)

Weak Acid Cation (2)

Gel (1)

Macroporous (1)

  1. CWA 92D

Non Regenerable Cation (1)

  1. CSA 309

Anion Exchange Resins (11)

Strong Base Anion (7)

Gel (3)

Isoporus (2)

Macroporous (2)

Weak Base Anion (3)

Macroporous (3)

Non Regenerable Anion (1)

  1. GA 711

Mixed Bed Resins (1)

Uniform Particle Size (7)

Speciality Resins (9)

Water Treatment Chemicals (0)