ResinTech SIR-300, Heavy Metal Selective Cation Resin, 1 Cubic Foot, Na Form

Brand: ResinTech

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MSRP: $1,565.00
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ResinTech SIR-300, Heavy Metal Selective Cation Resin, 1 Cubic Foot, Na Form

ResinTech SIR-300 is a macroporous chelating weak acid cation resin. SIR-300 has unique chelating functionality and is able to remove divalent transition metals preferentially to alkaline earth metals such as calcium. SIR-300 is intended for removal of low to moderate concentrations of heavy metals from waste streams.

Features & Benefits
     - Removes Heavy Metal Cations From Process Solutions: High capacity for removing traces of heavy metals from process waters even in the presence of hardness ions
     - Removes Heavy Metals From Rinse Waters: Removes trace metals preferentially in slightly acidic waters prior to discharge or in front of other resins used in recycle recovery loops
     - 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
    
Applications:
     - Trace Metals Removal: The relative affinity of Resi nTech SIR-300 for heavy metals in near neutral solutions is in accordance with the following sequence:  

H>>Cu>Pb>Ni>Zn>Co>Cd>Fe>Mn>Mg>Ca>Sr>B>>Na

High concentrations of chlorides or sulfates, or the presence of chelating or complexing agents can alter this sequence and likewise will affect the operating capacity.

High Chloride Solutions
Cu>Ni>Co>Zn>Cd>Fe
High Sulfate Solutions
Cu>Ni>Cd>Zn>Co>Fe

Resi nTech SIR-300 has similar chelating characteristics to EDTA and NTA, therefore it is less effective when these agents are present. For each particular metal cation there is a critical pH at which SIR-300 has optimum selectivity. For most metals this pH is approximately 4.0. As the pH decreases, so does the selectivity. At a pH of approximately 1.5, SIR-300 loses its ability to remove most metals. The minimum pH values for removal of some common metal ions are as follows:

Manganese 4.0
Iron 3.0
Zinc, Cobalt 2.7
Nickel 2.5
Copper 1.5

As the pH increases, selectivity generally decreases. Above a pH of 9.0 many metals form anionic complexes and are no longer present in a form that can be removed by ResinTech SIR-300.
Physical Properties
     - Polymer Structure: Styrene/DVB
     - Functional Group: Iminodiacetic
     - Physical Form: Spherical Beads
     - Ionic Form as Shipped: Sodium
     - Total Capacity: >1.1 meg/mL
     - Water Retention: 50 to 60 percent
     - Approximate Shipping Weight: 44 lbs per cu. ft.
     - Screen Size Distribution (US Mesh): 16 to 50
     - Maximum Fines Content (< 50 mesh): 1%
     - Minimum Sphericity: 95%
     - Uniform Coefficient: 1.6 approx. 
     - Resin Color: White to Tan

Suggested Operating Conditions
     - Maximum Continuous Temperature: 170°F
     - Minimum Bed Depth: 36 Inches
     - Backwash Expansion: 25 to 50 percent
     - Maximum Pressure Loss: 25 psi
     - Operating pH Range: 2 to 10 SU
     - Service Flow Rate: 0.5 to 2 gpm per cubic foot
Weight:
48.00 LBS