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MGI uses columns filled with Octolig® to treat waste streams that contain regulated heavy metals. Column diameters are from 12 inches to 42 inches. Each of the largest columns may handle up to 25 GPM of direct feed. If more water needs to be treated, any number of columns may be operated in parallel to achieve the flow requirements. Precipitation and filtration may be used prior to the Octolig® MRP treatment when high concentrations of heavy metals are present. Carbon filters or absorbents may be used as a preliminary step for optimal performance, when organic compound impurities, such as oils and greases, are present. |
| Octolig® is immobilized by chemically bonding a ligand to a silane that has been chemically bonded to silica gel. Metal removal and retention is a result of chelation by the ligand; therefore, Octolig® acts as a “host” to the heavy metals.
Octolig® is extremely insoluble and is stable in aqueous solutions in the pH range of 0.5 to 10.5 and in the temperature range of 0° C to +80° C. Extremely high selectivities for heavy metals make Octolig® very efficient at removing metals from water. Octolig®retains ions or metal complexes. Before it is loaded with heavy metals, Octolig® has the appearance of fine white sand. When the system is loaded with heavy metals, the column changes to the color of the heavy metals it has retained |
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