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ResinTech - Model SIR-500 -Sodium Form Macroporous Chelating Weak Acid Cation Resin
ResinTech SIR-500 is a sodium form macroporous chelating weak acid cation resin. SIR-500 has unique aminophosphonic chelating functionality and is particularly selective for alkaline earth metals such as calcium. ResinTech SIR-500 is intended for removal of hardness from saturated brine and for removal of divalent metals such as copper and nickel from wastewater and various process streams. ResinTech SIR-500 is supplied in the sodium form, can be special ordered in the hydrogen form (as SIR-500-H), or in the buffered form (as SIR-500 pH ADJ).
- Polymer Structure: Styrene/DVB
- Polymer Type: Macroporous
- Functional Group: Aminophosphonic
- Physical Form: Spherical Beads
- Ionic Form (as shipped): Sodium
- Total Capacity: >1.7 meq/mL
- Water Retention: 50 to 70 percent (Cl Form)
- Approximate Shipping Weight : 41 lbs/cu.ft. (Cl Form)
- Screen Size Distribution : 16 to 50 (U.S. Mesh)
- Maximum Fines Content: 1 percent (less than 50 Mesh)
- Minimum Sphericity: 95 percent
- Uniformity Coefficient: 1.6 (Approximate)
- Resin Color: White to tan
Removes Calcium and Magnesium from Brine Solutions
Ideal for removing hardness from brine solutions under neutral to alkaline conditions
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
Superior Physical Stability
95% 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.
Brine Softening
ResisinTech SIR-500 is ideally suited to remove traces of hardness from saturated brines, as pretreatment to electrolysis cells as well as other applications for brines that require low levels of divalent metals. SIR-500 works best at relatively alkaline pH following chemical precipitation processes. All chelating resins are kinetically limited and require a low flow rate. Elevated temperatures improve kinetics provided the resin is not operated beyond its stated thermal limits. To avoid excessive bead breakage, care must be taken to “sweeten on“ and “sweeten off” to avoid thermal and osmotic shock from occurring.
Trace Metals Removal
ResisinTech SIR-500 can be used to remove heavy metal multivalent ions from a variety of industrial effluents like oil refineries, plating shops, mine drainage, battery manufacturers, cooling towers etc.
Order of Selectivity
pH Below 7
H>Pb> Cu> Zn>Mg> Ca> Cd> Ni>> Na
pH Above 7
Cd> Mg> Ca> Sr> Al> Ba>> Na