ResinTech - Model WBACR -Anion Exchange Resin Weak Base Acrylic Free Base Form

• Polymer Structure: Acrylic/DVB
• Polymer Type: Gel
• Functional Group: Tertiary Amine
• Physical Form: Spherical Beads
• Ionic Form (as shipped): Free Base
• Total capacity: > 1.4 meq/mL (Free base Form)
• Water Retention: 56 to 64 percent (Free base Form)
• Approximate Shipping Weight : 44 lbs/cu.ft. (Free base Form)
• Swelling: 10 to 15 percent Free base to Cl
• Screen Size Distribution : 16 to 50 (U.S. Mesh)
• Maximum Fines Content: 1 percent (less than 50 Mesh)
• Minimum Sphericity: 93 percent
• Uniformity Coefficient: 1.6 (Approximate)
• Resin Color: Off white

High Basicity

High internal basicity produces a higher effluent pH over a greater fraction of the exhaustion cycle

High Operating Capacity

Tertiary amine functionality provides nearly 100% caustic regeneration efficiency

Superior Physical Stability

93% plus sphericity and high crush strengths together with carefully controlled particle distribution provides long life and low pressure drop

Controlled Particle Size

16 to 50 mesh size provides a low pressure drop and superior kinetics

Demineralizer

ResinTech WBACR can be used in a two bed system following a strong acid cation unit (such as CG8-H) where weakly acidic anions such as silica and carbon dioxide do not have to be completely removed. Where complete removal of all anions is required, WBACR can be placed ahead of a strong base anion unit (such as SBG1P-OH). WBACR will efficiently remove strong acids such as chlorides, sulfates and nitrates, leaving silica and carbon dioxide to be removed by the strong base resin. WBACR is easily regenerated with modest caustic dosages or with waste caustic left over from the strong base anion unit.

Organic Removal

ResinTech WBACR is easily regenerated with sodium hydroxide, allowing the removal of organic acid anions as part of a demineralization process utilizing an upstream hydrogen form strong acid cation exchanger. The use of WBACR in front of a hydroxide form strong base anion exchanger can help reduce organic fouling of the strong base anion resin, increasing run lengths between regenerations. Because free base form weak base anion resins are only able to absorb acids, the feedwater must be significantly acidic or the resin must be preconverted into the acid sulfate or acid chloride form prior to use.