GEOLINKS International Conference 2019, Book 2
GREEN BUILDINGS TECHNOLOGIES AND MATERIALS
THE ROLE OF FE OXYHYDROXIDES IN REMEDIATION OF CONTAMINETED MINE WATERS
Mgr. Ondrej Brachtýr, doc. Mgr. Peter Šottník, PhD., RNDr. Ľubomír Jurkovič, PhD.
The main goal of our research was to compare the effectiveness of natural and supported attenuation as a remediation method for the removal of potentially toxic elements from mining waters occurring on the sites where sulfide mineralization deposits were present in the past. Samples for this research were taken from sites with abandoned mineral deposits of sulfide ores. These pose a danger to the environment in the form of increased concentrations of some potentially toxic elements (especially: As, Sb, Ni, Hg) in waters flowing out of the abandoned mines. These are the localities in Medzibrod, Poproč, Dúbrava and Pezinok where the main risk is represented by increased concentrations of As and Sb, and the locality in Merník where increased concentrations of Hg and Ni were found. As part of our research, we have successfully proved that natural attenuation is an effective remediation method for mining waters contaminated by potentially toxic elements. We also proved, that supported attenuation (by aeration) significantly increases the amount of precipitates – secondary mineral phases in the form of Fe oxyhydroxides.
mining waters, oxyhydroxides, remediation method, attenuation