Acidic Mining Lakes: Acid Mine Drainage, Limnology and by W. Geller, H. Klapper, M. Schultze (auth.), Prof. Dr. Walter

By W. Geller, H. Klapper, M. Schultze (auth.), Prof. Dr. Walter Geller, Prof. Dr. Helmut Klapper, Prof. Dr. Wim Salomons (eds.)

Acidification is a common challenge in any respect mining websites during which oxygenated water is available in touch with sulfide minerals or different lowered sulfur compounds. a global Workshop used to be held in September 1995 on the division for Inland Water learn of the UFZ-Centre for Environmental examine in Magdeburg at the limnology of lakes created by way of open-cast lignite mining, emphasizing the customarily saw geogenic acidification after oxidation of pyrite. issues of curiosity have been case experiences at the limnology of acid lakes, e.g. bacteriologically stronger procedures with regards to heavy steel mobilization and acid new release, the ecology of sulfur-acidic lakes, and at the inorganic methods of acidification. moreover, ideas for the prevention and the abatement of acidification have been addressed together with the factors of acidification, and the choices for decreasing the output of acidified groundwater from overburden dumps, for acid regulate throughout the flooding of open-cast mines, and strength measures for brought about in situ organic neutralization. This quantity has 25 chapters together with a bankruptcy with result of staff discussions in regards to the subject matters pointed out above and additional difficulties that have been pointed out throughout the assembly. The monograph offers a baseline of the nation of technological know-how at the all over the world challenge of geogenic adidification of lakes following human mining actions, and the way to deal with this environmental problem.

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Additional resources for Acidic Mining Lakes: Acid Mine Drainage, Limnology and Reclamation

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Bundesumweltministerium, Bonn Eissmann L (1994) Leitfaden der Geologie des Praquartars im Saale-Elbe-Gebiet. Altenburger Naturwiss Forsch 7: 11 - 46 Glasser W (1995) Der EinfluB des Braunkohlenbergbaus auf Grund- und Oberflachenwasser. Geowissenschaften 8/9: 291- 296 Nowel W, Bonisch R, Schneider W, Schulze H (1995) Geologie des Lausitzer Braunkohlereviers. Lausitzer Braunkohle Aktiengesellschaft, Senftenberg Part 2 Limnological Case Studies on Acid Lakes 3 Chemical Characteristics of Water and Sediment in Acid Mining Lakes of the Lusatian Lignite District K.

Sulphide minerals, such as pyrite and marcasite, are commonly associated with coal and most metal ores. Weathering and oxidation of these minerals take place in the host rocks and substrates of the lignite horizons when they are exposed to air. The release of the oxidation products, mainly acidity, iron and sulphate, is known as acid mine drainage (AMD) and has been the subject of intense research for decades (e. g. Singer and Stumm 1970; Lowsen 1982; Nordstrom 1982; van Berk 1987; Morrison et al.

5 d). In Lake Au and Lake Murner there is a decrease in the sulphate concentration in pore water below the sediment - water interface, while the ferrous iron concentration increases. Note that in the upper layers of the sediment of Lake Murner the concentration of ferrous iron is distinctly above the detection limit of l/lmolll. In Lake Murner the gradients of both species are steeper, indicating enhanced reductive processes relative to Lake Au (Fig. 5 a, b). Ferric iron is detectable at all depths, with concentrations slowly increasing from 140 /lmolll at the sediment - water interface to 500/lmolll at 13-cm depth (Fig.

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