ResinTech SIR-200, Mercury Removal Cation Resin, 1 Cubic Foot
ResinTech SIR-200 is a hydrogen form macroporous mercury selective weakly acidic resin. SIR-200 has unique functionality that makes it selective for mercury and other heavy metals. SIR-200 is also very selective for noble metals when present as cations. SIR-200 is intended for mercury removal and for removal/recovery of various precious metals.
Features & Benefits
- Enhanced Selectivity for Divalent Mercury: Able to selectively reduce mercury to extremely low (ppb) levels
- Effective Over Wide pH Range: Able to operate in acidic and neutral environments (2 to 10 pH)
- 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
- Controlled Particle Size: 16 to 50 mesh size provides a low pressure drop and superior kinetics
Applications:
- Mercury Removal: ResinTech SIR-200 has exceptional affinity for cationic forms of mercury and can be used to remove cationic mercury from wastewaters to much less than 1 ppb. Mercury can also be present as part of an organic complex, as an anion and as an uncharged species. Removal of these species is uncertain. SIR-200 is rapidly degraded by the presence of chlorine and other oxidants and is inactivated at significantly alkaline pH. Due to the possible release of low levels of H2S, SIR-200 is not recommended for use in potable water applications.
- Precious Metals Removal: Removal of precious metals by SIR-200 generally follows the solubility of that metal in the presence of sulfide ion. Metals load according to their relative sulfide affinities. However high concentrations of "tramp" metals also load and may prevent loading of more desirable metals. The order of selectivity of ResinTech SIR-200 is shown in the following sequence:
Hg>Ag>Cu>Pb>Cd>Ni>Co>Fe>Ca>Na
SIR-200 removes cationic forms of metals. Removal of anionic and zero valent forms of metals is uncertain. Chelating agents such as EDTA interfere with SIR-200's performance. As pH increases, capacity decreases. For most heavy metals, there is a critical pH above which the metal is no longer present as free cation. In most cases, the best suited pH will be less than 7.0.
- Precious Metals Removal: Removal of precious metals by SIR-200 generally follows the solubility of that metal in the presence of sulfide ion. Metals load according to their relative sulfide affinities. However high concentrations of "tramp" metals also load and may prevent loading of more desirable metals. The order of selectivity of ResinTech SIR-200 is shown in the following sequence:
Hg>Ag>Cu>Pb>Cd>Ni>Co>Fe>Ca>Na
SIR-200 removes cationic forms of metals. Removal of anionic and zero valent forms of metals is uncertain. Chelating agents such as EDTA interfere with SIR-200's performance. As pH increases, capacity decreases. For most heavy metals, there is a critical pH above which the metal is no longer present as free cation. In most cases, the best suited pH will be less than 7.0.
- Polymer Structure: Styrene/DVB
- Functional Group: Thiol
- Physical Form: Spherical Beads
- Ionic Form as Shipped: Hydrogen
- Water Retention: 38 to 48 percent
- Approximate Shipping Weight: 45 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: 160°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
