Original title: An Environmental Impact of Pyritic Bauxite from the Dajti Mine, Albania
Authors: Novák, Jiří Karel ; Minařík, Luděk ; Peza, Luftulla Hasan ; Melka, Karel
Document type: Papers
Conference/Event: Conference on Clay Mineralogy and Petrology /15./, Brno (CZ), 1998-09-06 / 1998-09-10
Year: 2000
Language: eng
Abstract: The accelerated chemical weathering of bauxite due to acid atmospheric deposition and breakdown of pyrite was simulated using short-termed laboratory acid leaching at 20 o C. Pyrite-bearing gibbsite-boehmitic bauxite giving rise to a number of questions concerning ecology was tested along with oxic boehmitic bauxite from the Dajti mine and that from Mali Korites (Mali Thate Mts., SE Albania). The leachte of pyrite-bearing and sulphate-producing bauxite is enriched in the following risk elements: Cd, Be, Zn, Ni, Co, and much less Cr, Cu, As, and Pb. Toxic soluble hydroxy-alumina ions may be also released into the aquatic environment, because of high concentration in output leachate (563 mg/l). In contrast, the leachates of oxic boehmitic bauxites commonly contain much lower concentrations of toxic elements with exception of Cu (Dajti mine) and Be (new occurence of Mali Korites).
Keywords: acid leaching; acidification; karst bauxite
Project no.: CEZ:AV0Z3013912 (CEP)
Host item entry: 15th Conference on Clay Mineralogy and Petrology. Proceedings

Institution: Institute of Geology AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0042711

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