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 examine of the UFZ-Centre for Environmental study in Magdeburg at the limnology of lakes created via open-cast lignite mining, emphasizing the usually saw geogenic acidification after oxidation of pyrite. themes of curiosity have been case reports at the limnology of acid lakes, e.g. bacteriologically superior procedures on the topic of heavy steel mobilization and acid iteration, the ecology of sulfur-acidic lakes, and at the inorganic approaches of acidification. additionally, strategies for the prevention and the abatement of acidification have been addressed together with the motives of acidification, and the choices for decreasing 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 brought on in situ organic neutralization. This quantity has 25 chapters together with a bankruptcy with result of staff discussions in regards to the issues pointed out above and extra difficulties that have been pointed out through the assembly. The monograph provides a baseline of the kingdom of technological know-how at the around the world challenge of geogenic adidification of lakes following human mining actions, and the way to address this environmental problem.
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Extra info for Acidic Mining Lakes: Acid Mine Drainage, Limnology and Reclamation
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Negative correlation between iron and dry weight 120----------------------------------------~ o 100 o 5 10 a o • • 20 o 15 o •• j • Group 1 o Group 2 A Group 3 A 20 25 30 LOI% 120--------------------------------------~ o 100 I :: '. c • Group 1 o o Group 2 • •• 40 20 A Group 3 o~----~--------------~----~----~--~ o b 1000 2000 3000 4000 5000 6000 7000 TN (rna/kg) Fig. 12. Correlation between a arsenic and loss on ignition (LOI) and between b arsenic and total nitrogen K. Friese et al. 3 Depth Profiles Metal distribution with depth in the sediments of two lakes (ML-B and ML-F) shows quite different patterns.
For an overview of the chemical composition of lake sediments we used grab samples. In addition, sediment cores were collected from a neutral (ML-B) and an acidic (ML-F) lake in the mining district "Schlabendorf-Nord" with a modified Kajak gravity corer (Uwitec, Austria) in August 1994. Immediately after sampling, the cores were sliced into l-cm layers. Chemical analyses were performed according to the National German Standard Methods (DEV/DIN). Lake water was analysed in the following way: pH by in-situ measurement (WTW-electrode); Na, K, Ca, Mg, Fe, Mn, Cu and Zn by flame atomic spectrometry; NHt by photospectroscopy; SO~-, CI-, and NO; by ion chromatography; HCO; by titrimetry; AI, Cd, Cr and Pb by flame atomic spectrometry and by atomic absorption spectrometry; As by atomic absorption spectrometry (hydride system or graphite furnace) and Hg by cold vapour atomic absorption spectrometry.
Acidic Mining Lakes: Acid Mine Drainage, Limnology and Reclamation by W. Geller, H. Klapper, M. Schultze (auth.), Prof. Dr. Walter Geller, Prof. Dr. Helmut Klapper, Prof. Dr. Wim Salomons (eds.)