| Popis: |
Murmansk Region is home to some major mining and mineral sites. One of the most challenging environmental problems in themining industry is mine water treatment. For example, the rocks of the deposit operated by Lovozero Mining and Mineral ProcessingCompany contain villiomite (NaF). It is highly soluble in water, and the mine waters at the site have a high content of fluoride ions –significantly above the maximum permissible values.Lab-scale experiments were conducted to test various reagents and different initial concentrations of fluoride ions in the treatment ofmodel solutions and mine water. Depending on the initial concentrations, magnesium and calcium-containing sorbents are proposedfor the defluorization of water. Using scanning electron microscopy and microprobe analysis, it was found that fluorine can be boundin poorly soluble compounds, such as, for example, fluorite.Pilot trials are planned. |
