PS440II--Pure Resin Co., Ltd.

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Chelating Resin

PS440II Detailed Introduction

Product Description & Applications

Pure PS440II is a strongly basic hybrid anion exchange resin specially formulated to selectively remove arsenic. It is supplied in the salt form as clean, moist, tough, uniform, spherical beads. Pure PS440II exhibits extraordinary throughput capacity in arsenic removal service on potable water supplies. Its performance is virtually unaffected by common anions, such as chlorides, bicarbonates or sulfates. It is effective over the entire pH range of potable water. Pure PS440II is also available in organic trap, perchlorate selective and nitrate selective configured resins. These resins are fully selective for arsenic, but still retain their original ion exchange selectivity.

Features & Benefits

. TREMENDOUS AFFINITY FOR ARSENIC OVER OTHER ANIONS
. Highest arsenic removal capacity of organic based arsenic removal media
. NO ARSENIC DUMPING
. Effluent arsenic levels will not exceed influent levels if resin is operated past exhaustion point
. EFFECTIVE ACROSS THE ENTIRE POTABLE WATER pH RANGE
. SINGLE USE OR REGENERABLE APPLICATIONS . SUPERIOR PHYSICAL STABILITY
. Spherical and uniform particle size provide low pressure drop and greater resistance to bed
. Unlike granular, coated medias, Pure PS440II will not shed particles.

Exhaustion Curve

Pure PS440II Exhaustion Curve 100ppm SO4 and 50ppb As+5

Typical Physical & Chemical Characteristics
Physical Form And Appearance	Red, Tough, Spherical Beads
Polymer Structure	Styrene with DVB
Functional Group	R₃-N-R⁺Cl^-
Ionic Form, as shipped	Chloride
Screen Size Distribution >50 mesh (U.S. Std)	16 to 50 Nominal Less than 1%
pH Range	4 - 10
Water Retention	35% - 55%
Approx. Shipping Weight	790 g/L (49 lbs/ft3)
Total Capacity	>1.0 meq/mL
Sphericity	> 93%

Suggested operating conditions
Flow Rate	2 to 5 gpm/cu.ft. 1 to 20 gpm/sq.ft.
Pressure Loss	25 psi max.
Temperature	75ºC max.

Operating Capacity

Under ideal conditions, the 1st cycle throughput capacity for arsenic removal with
approximately 50 ppb As⁵⁺ in the inlet is greater than 500,000 gallons per cu.ft., while
producing less than 10 ppb of effluent arsenic.
The throughput capacity varies inversely with changes in the influent arsenic levels.
Pure PS440II has modest capacity for arsenite (As³⁺). It is suggested that if the arsenite concentration exceeds 20% of the total arsenic present, the feedwater should be pre-
chlorinated to ensure conversion to arsenate (As⁵⁺).
Pure PS440II is also selective for other oxy-anions, such as selenate.
It will remove modest amounts of both phosphate and silica.

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