Ochre precipitates and Acid Mine Drainage in a mine environment

0376083 - ÚACH 2012 RIV CZ eng J - Journal Article
Máša, B. - Pulišová, Petra - Bezdička, Petr - Michalková, E. - Šubrt, Jan
Ochre precipitates and Acid Mine Drainage in a mine environment.
Ceramics - Silikáty. Roč. 56, č. 1 (2012), s. 9-14. ISSN 0862-5468. E-ISSN 1804-5847
R&D Projects: GA MŠMT(CZ) MEB0810136
Grant - others:Ministry of Education of the Slovak Republic(SK) VEGA 1/0529/09
Institutional research plan: CEZ:AV0Z40320502
Keywords : ochre precipitate * Acid Mine Drainage (AMD) * X-ray diffraction analysis (XRD) * Scanning electron microscopy (SEM) * specific surface area and porosity
Subject RIV: CA - Inorganic Chemistry
Impact factor: 0.418, year: 2012

This paper is focused to characterize the ochre precipitates and the mine water effluents of some old mine adits and settling pits after mining of polymetallic ores in Slovakia. It was shown that the mine water effluents from two different types of deposits (adits; settling pits) have similar composition and represent slightly acidic sulphate water (pH in range 5.60-6.05, sulphate concentration from 1160 to 1905 g.dm-3). The ochreous precipitates were characterized by methods of X-ray diffraction analysis (XRD), scanning electron microscopy (SEM) and B.E.T. method for measuring the specific surface area and porosity. The dominant phases were ferrihydrite with goethite or goethite with lepidocrocide.
Permanent Link: http://hdl.handle.net/11104/0006941