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 within which oxygenated water is available in touch with sulfide minerals or different decreased 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 study in Magdeburg at the limnology of lakes created via open-cast lignite mining, emphasizing the customarily saw geogenic acidification after oxidation of pyrite. themes of curiosity have been case reports at the limnology of acid lakes, e.g. bacteriologically improved approaches on the topic of heavy steel mobilization and acid iteration, the ecology of sulfur-acidic lakes, and at the inorganic approaches of acidification. moreover, thoughts for the prevention and the abatement of acidification have been addressed together with the explanations of acidification, and the choices for lowering the output of acidified groundwater from overburden dumps, for acid regulate through the flooding of open-cast mines, and capability measures for precipitated in situ organic neutralization. This quantity has 25 chapters together with a bankruptcy with result of team discussions concerning the themes pointed out above and additional difficulties that have been pointed out in the course of the assembly. The monograph supplies a baseline of the country of technological know-how at the around 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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Extra resources for Acidic Mining Lakes: Acid Mine Drainage, Limnology and Reclamation
1995). 2 Sampling Sites and Methods Sampling for a limnochemical survey of 13 selected lakes in the Lusatian district was performed in July 1993. The area under study covers the local mining districts of "Schlabendorf-Nord", "Seese-West", "WeiBwasser", "Senftenberg" and "Lauchhammer" (Fig. 1). Most of the lakes are not older than 40 years, showing an isolated situation without any influent or effluent. Due to the secret policy of former East Germany, information about the investigated lakes is rare.
The thickness of such lenticular coal accumulations may reach up to 100 m, such as in the Geisel valley. Similar occurrences can be found in the lignite pits of Merseburg (east), Teutschenthal, Amsdorf, and Helmstedt. At these places, salt-bearing coal is present. This involves particular problems in flooding the workedout open pits. Most of the lignite is mined from the large, expansive deposits, where several coal seams are present. These deposits are of epicontinental origin, formed at the southern margin of the large Tertiary basin of northern Germany.
3 Sampling and Analytical Methods Water from all five lakes was analysed for pH, conductivity, titration acidity, dissolved sulphate, dissolved aluminium and dissolved iron in June 1995. In Lake Linden, Lake Briickel and Lake Edelmann only surface water was sampled. In Lake Au and Lake Murner depth profiles were measured, in Lake Au at the deepest point of the lake and in Lake Murner in the middle of the lake. In Lake Au sampling reached from the lake surface to just above the sediment at 26-m depth.