By Walter Geller, Martin Schultze, Bob Kleinmann, Christian Wolkersdorfer
This monograph offers a world standpoint on pit lakes in post-mining landscapes, together with the matter of geogenic acidification. a lot has been realized over the last decade via learn and useful event on find out how to mitigate or remediate the environmental difficulties of acidic pit lakes. within the first a part of the ebook, common medical matters are provided in 21 contributions from the fields of geo-environmental technological know-how, water chemistry, lake physics, lake modeling, and at the bizarre organic gains that take place within the severe habitats of acidic pit lakes. one other bankruptcy offers an summary of equipment at the moment used to remediate acidic pit lakes and deal with outflowing acidic water. the second one a part of the e-book is a set of nearby surveys of pit lake difficulties from 3 ecu international locations and Australia, and case experiences of assorted person consultant lakes. a last case examine presents an cutting edge method of assessing the industrial price of recent pit lakes and balancing the prices and advantages, a helpful software for selection makers.
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Additional info for Acidic Pit Lakes: The Legacy of Coal and Metal Surface Mines
Column tests were operated to determine the rate of pyrite oxidation in the vadose zone and the elution rates in the permanently saturated zone. These results, combined with a groundwater flow model that was calibrated with actual observations, allowed for the development of a detailed balance of acidity in Lake Bockwitz. The result is depicted in Fig. 9. For more details, see Heinrich et al. (2011). e. 5 years after reaching the final lake level (Fig. 9). 2 Influence of Groundwater on Pit Lakes 21 Fig.
2 Limnochemistry of Water and Sediments of Acidic Pit Lakes 45 et al. 1979) and alkaline groundwaters, most of these hard coal mine pit lakes have a neutral pH (Anderson and Hawkes 1985). Similar observations were reported from a set of coal mine pit lakes from Illinois (Gibb and Evans 1978, cited in Castro and Moore 2000). Further sets of geochemical data were available from 14 pit lakes in former hard coal mines in the Collie region in Western Australia (Lund and McCullogh 2008; Salmon et al.
In areas of high density gradients, transport coefficients can be close to the molecular level (von Rohden et al. g. von Rohden and Ilmberger 2001). In small- to medium-size lakes, this turbulent transport mainly happens at the side boundaries where waves and currents interact with the slope of the side walls (Gouldsmit et al. 1997). 0 m 10 m 18 m 31 m temperature [°C] 20 15 10 5 XN5 − 2004 0 0 50 100 150 200 250 300 350 Julian day of 2004 Fig. 8 Temperature time series acquired at several depths in Lake Goitsche at sampling site XN5 Fig.