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Strong-Base Type I Acrylic Anion Exchange Resin

Strong-Base Type I Acrylic Anion Exchange Resin
(for use in demineralisation of water containing organic matter)

Technical Data
Product Description

A-850 is a gel-type 1 strong-base anion exchange resin with an acrylic matrix. The acrylic matrix ensures excellent removal of organic matter from a water supply in conjunction with its reversible removal upon regeneration. This resin is regenerated very efficiently with lower levels of sodium hydroxide than those required for a polystyrene-based type 1 resin, and yet it has a comparable ability to remove weaker acids including carbonic acid and silica.

Applications:

This product is mainly used in the anion stage of a demineralization plant, particularly on waters where polystyrenic resins are likely to suffer from premature organic fouling.

The FL graded product is specially tailored so the particle size range makes it suitable for use not only in co-flow but also in most standard counter-flow regenerated plants, and packed bed systems using either up-flow or down-flow regeneration. It should always be remembered that acrylic anion resins not only swell and contract in different ionic forms like polystyrenic resins but also undergo irreversible swelling in the first few cycles, which has to be allowed for in some special plant designs.

Like type 2 polystyrenic resins, the acrylic strong base anion resins have a lower maximum temperature limit when operated in the OH form compared to type 1 polystyrenic anion resins.

 

Typical Physical & Chemical Characteristics
Polymer Matrix Structure Cross-linked Gel Acrylic
Appearance Transparent white spherical beads
Functional Groups Quaternary Ammonium
Ionic Form (as shipped) Cl-
Shipping Weight 695-715 g/l [43.5-45 lb/ft3]
Moisture Retention , Cl- form 57-62%
Irreversible Swelling 10%max
Reversible Swelling Cl–>OH- 15%max
Specific Gravity 1.08 g/ml
Total Exchange Capacity, Cl- form 1.2 eq/l min
Operating Temperature (max) : 40°C (100°F)
pH range no limitations

July 31, 2014 Derwent Water Systems
Read more about Envirogen Water Technologies at www.envirogenwater.com
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