- Home
- Companies
- ResinTech Inc
- Products
- ResinTech - Model ASM-125 - Hybrid ...
ResinTech - Model ASM-125 -Hybrid Anion Exchange Resin Silica & Antimony Selective Chloride Form
ResinTech ASM-125 is a chloride form gel hybrid anion resin selective for silica and antimony. ASM-125 contains hydrated iron oxide crystals monoatomically dispersed throughout the polymer. It absorbs antimony, silica, and other contaminants by a combination of ion exchange and adsorption. ResinTech ASM-125 is intended for use removing trace levels of antimony and can also be used to remove silica from process waters. ASM-125 is supplied in the chloride form.
- Polymer Structure: Styrene/DVB
- Polymer Type: Gel
- Functional Group: Hybrid
- Physical Form: Spherical Beads
- Ionic Form (as shipped): Chloride
- Water Retention: 35 to 50 percent (Cl Form)
- Approximate Shipping Weight : 49 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: 93 percent
- Uniformity Coefficient: 1.6 (Approximate)
- Resin Color: Black
High Affinity for Antimony and Silica Over Other Anions
Formulated for selective removal of antimony and silica
Effective in Layered Resin Systems
Can be used as a layer in radwaste and other ion exchange systems designed for multicontaminant removal
Superior Physical Stability
93% plus sphericity and high crush strengths together with carefully controlled particle distribution provides long life and low pressure drop
United States Patent
Method of making and using modified anion exchange materials with metal inside the materials. US Pat. No. 7,504,036
Controlled Particle Size
16 to 50 mesh size provides a low pressure drop and superior kinetics.
Antimony Removal
Trace levels of antimony are adsorbed by the iron hybrid material inside ResinTech ASM-125, which in all other respects remains a strong base anion resin. The resin is typically used as the bottom layer of a multilayer exchange tank. Antimony reduction is typically around 90%. In recycle applications where the source of antimony has been removed, remaining antimony can be reduced below the limit of detection.
Silica Removal
Chloride form ResinTech ASM-125 can be used at moderate pH to remove silica from neutral water without reducing TDS. At a flow rate of 0.5 BV/min, treating water with a pH of 7.5, a removal efficiency of fifty percent is possible for several hundred bed volumes of throughput. Silica removal continues at reduced efficiency for many thousands of additional bed volumes. Even though silica removal is not complete, the lowering of silica helps maintain purity in spent fuel pools and other radwaste systems.
Removal Of Other Trace Contaminants
ResinTech ASM-125 is also able to remove other traces of activated metal oxides such as nickel, tin, and tellurium.