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Abstract

In the paper the results on self-purification of mine waters contaminated with polycyclic aromatic hydrocarbons (PAH) have been presented. Samples of waters from the .Zicrnowit" coal mine have been used. Concentrations of PAHs in the deposits and supernatant waters after selected specific periods of time were evaluated. The quantitative and qualitative analyses of 16 selected PAHs (as recommended by the USEPA) were carried out, as well as investigations on the PAH concentration changes versus time in deposits and supernatant waters. Extension of the sedimentation time resulted in increased concentrations of carcinogenic PAHs in deposits. The observed PAHs concentrations in deposits were high and comparable with these found usually in sewage sludge. Outing the whole sedimentation process sorption of compounds which are easily bounded on suspension (with log kow > 7) took place, which led do the decrease of PAH concentration in supernatant waters. 'The accumulation of PAHs in deposits and their desorption lo supernatant waters during the sedimentation process were not signi fi cant.
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Authors and Affiliations

Beata Caban-Pabian

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