ResinTech - Model SIR-150 -Macroporous Borate Selective Weak Base Anion Resin
ResinTech SIR-150 is a macroporous borate selective weak base anion resin. SIR-150 has unique functionality which makes it extremely selective for borate. Resi nTech SIR-150 is intended for all borate removal applications including potable water, ultrapure water, and boron removal from concentrated brines. SIR-150 is supplied in the free base form.
- Polymer Structure: Styrene/DVB
- Polymer Type: Macroporous
- Functional Group: Methylglucamine
- Physical Form: Spherical Beads
- Ionic Form (as shipped): Free Base
- Water Retention: 46 to 60 percent (Free Base Form)
- Approximate Shipping Weight : 39 lbs/cu.ft. (Free Base 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: Tan
Highly Selective for Boron
Able to remove boron from almost any liquid solution, provided that the pH is greater than 4
Suitable for Regenerable Applications
Two stage acid/caustic regeneration process restores the capacity for hundreds of operating cycles
Superior Physical Stability
90% 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.
Boron Removal from Potable Water
ResisinTech SIR-150 can be used to remove boron from potable waters of any type. SIR-150 selectivity for boron is so high that the concentration of common bulk ions such as chloride, sulfate, and bicarbonate are unimportant. SIR-150 is kinetically limited and cannot be operated at a high flow rate without experiencing increased leakage and decreased throughput capacity. Regeneration is accomplished with acid to strip the boron, followed by caustic to remove the acidity. The regenerated resin should be buffered into the potable water range to prevent possible pH excursions when first returned to service and also to prevent possible calcium carbonate scaling.
Boron Removal from Brine
ResisinTech SIR-150 can be used to remove boron from almost any brine stream, even when the brine is fully saturated. The brine pH must not be lower than approximately 4 or the chelating exchange groups will be destabilized and might not work properly. Ion exchange in any concentrated salt solution is kinetically hindered by high TDS, therefore flow rates are necessarily low.
Boron Removal from Ultrapure Water
ResisinTech SIR-150 can be used to remove boron from ultrapure water to sub ppb levels provided that certain precautions are taken. The resin must be completely regenerated to remove bulk ions such as chloride and sulfate, and then rinsed thoroughly with ultrapure water to reduce cation contaminants such as sodium. Resin must be ordered as HP grade and pretreated to reduce TOC leaching. The location of the boron removal resin should be in front of the polishing mixed beds so that trace levels of ionic leachables can be removed.