Bone Char Media | ResinTech SIR-950
ResinTech SIR-950 is a specialty adsorptive Bone Char Carbon designed for fluoride reduction in drinking water applications. Utilizing hydroxyapatite and carbon technology, SIR-950 provides effective fluoride removal while also reducing certain heavy metals, chlorine, taste, and odor compounds. Suitable for cartridge and pressure vessel systems, SIR-950 offers dealers a practical solution for point-of-entry and point-of-use fluoride treatment applications. ResinTech SIR-950 is the only bone char carbon we offer.
What Is Bone Char?
Bone char is a specialized filtration media produced by heating animal bone in the absence of oxygen. This process creates a highly porous material composed primarily of hydroxyapatite (calcium phosphate) and carbon. Unlike standard activated carbon, bone char is particularly effective at removing fluoride from water because of the chemical affinity between fluoride ions and the hydroxyapatite structure.
Bone char has been used for decades in drinking water treatment applications and remains one of the most effective media for reducing fluoride concentrations. Modern products such as ResinTech SIR-950 utilize hydroxyapatite-based technology to provide reliable fluoride removal in both cartridge and pressure vessel systems.
How Does Bone Char Remove Fluoride?
Bone char removes fluoride through an adsorption and ion-exchange process that occurs on the surface of the hydroxyapatite. As water passes through the media, fluoride ions are attracted to and retained by the hydroxyapatite structure, replacing hydroxyl groups within the media. This reaction effectively reduces fluoride concentrations in the treated water.
Because the removal mechanism is chemical rather than purely mechanical, fluoride remains bound to the media until the adsorption capacity is exhausted. Once the media reaches its treatment capacity, it is typically replaced rather than regenerated.
In addition to fluoride reduction, bone char media can also help reduce certain heavy metals and improve overall water quality. Performance depends on factors such as fluoride concentration, water chemistry, contact time, bed depth, and flow rate.
SIR-950 Typical Properties & Physical Characteristics
| Property | Value |
|---|---|
| Functional Group | Hydroxyapatite |
| Physical Form | Carbonaceous Granules |
| Particle Size | 12 to 50 US Mesh (297 - 1680 µm) |
| % < 50 mesh (300 µm) | < 1% |
| Temp Limit | 212°F (100°C) |
| Color | Black |
| Uniform Particle Size | Yes |
SIR-950 Suggested Operating Conditions
| Parameter | Value |
|---|---|
| Maximum Temperature | 140°F |
| Minimum Bed Depth | 2 inches in filters; 18 inches in tanks |
| Service Flow Rate - Continuous Flow | 2 to 5 gpm/cu.ft. |
| Service Flow Rate - Intermittent Flow | 15 gpm/cu.ft. |
Learn more:
- ResinTech SIR950 Bone Char Media
- WQA Fluoride Fact Sheet
- EPA Fact Sheet fluoride-in-drinking-water-gold-standard-science-1-22-26
- EPA Fact Sheet-fluoride-in-drinking-water-toxicity-assessment-1-22-26