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 within which oxygenated water is available in touch with sulfide minerals or different diminished sulfur compounds. a world Workshop was once held in September 1995 on the division for Inland Water examine of the UFZ-Centre for Environmental learn in Magdeburg at the limnology of lakes created by way of open-cast lignite mining, emphasizing the usually saw geogenic acidification after oxidation of pyrite. subject matters of curiosity have been case experiences at the limnology of acid lakes, e.g. bacteriologically superior strategies on the topic of heavy steel mobilization and acid iteration, the ecology of sulfur-acidic lakes, and at the inorganic strategies of acidification. additionally, techniques for the prevention and the abatement of acidification have been addressed together with the reasons of acidification, and the choices for lowering the output of acidified groundwater from overburden dumps, for acid regulate in the course of the flooding of open-cast mines, and power measures for caused in situ organic neutralization. This quantity has 25 chapters together with a bankruptcy with result of crew discussions concerning the subject matters pointed out above and additional difficulties that have been pointed out in the course of the assembly. The monograph supplies 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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033945oB. References Appelo CAJ, Postma D (1993) Geochemistry, groundwater and pollution. Balkema, Rotterdam Belzile N, Morris JR (1995) Lake sediments: sources or sinks of industrially mobilized elements. In: Gunn JM (ed) Restoration and recovery of an industrial region. Springer, New York Berlin Heidelberg, pp 183 -193 Benndorf J (1994) SanierungsmaBnahmen in Binnengewassern: Auswirkungen auf die trophische Struktur. Limnologica 24: 121-135 Blowes DW, Reardon EJ, Jambor JL, Cherry JA (1991) The formation and potential importance of cemented layers in inactive sulfide mine tailings.

1. Flooding state of the lakes Lake Start of flooding End of flooding Edelmann Murner Bruckel Au Linden 1964 1979 1980 1982 1982 1979 1989 1994 <1999 <2002 Actual maximum depth (m) Intended maximum depth (m) Final lake area (ha) 10 10 45 40 26 12 45 40 30 18 90 145 121 24 11 The symbol < denotes that flooding is planned to be finished before the year specified. 1). All lakes receive groundwater from the same aquifer. To stabilize the lake sides the lake water level is always kept above the groundwater table by removing the groundwater at a certain distance from the lake and then pumping it into the lakes.

Peine and S. ::> . cD. 6 • /! = 10 ~ 10 c c III •II o 1 2 3 d 456 80 42- [mmoVI] Fig. 2 a-d. Profiles of lake water concentrations of Lake Au and Lake Murner. Surface water concentrations of Lakes Linden, Bruckel and Edelmann. a pH; b aluminium; c ferric iron; d sulphate 4 In-Lake Neutralization of Acid Mine Lakes Fig. 06 Fe2+ [mmoVlj Fig. 3. 01 N NaOH solution to the surface water samples. The dashed line denotes the inflection point which lies atpH=5 4 AA Lake Unden . - . Lake Au . - . Lake Bruckel a- a Lake Murner .

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