Download e-book for iPad: Acidic Pit Lakes: The Legacy of Coal and Metal Surface Mines by Walter Geller, Martin Schultze, Bob Kleinmann, Christian

Environmental Studies

By Walter Geller, Martin Schultze, Bob Kleinmann, Christian Wolkersdorfer

ISBN-10: 3642293832

ISBN-13: 9783642293832

ISBN-10: 3642293840

ISBN-13: 9783642293849

This monograph offers a global point of view on pit lakes in post-mining landscapes, together with the matter of geogenic acidification. a lot has been discovered over the past decade via examine and useful event on how one can mitigate or remediate the environmental difficulties of acidic pit lakes. within the first a part of the booklet, normal medical matters are awarded in 21 contributions from the fields of geo-environmental technological know-how, water chemistry, lake physics, lake modeling, and at the odd organic positive aspects that ensue within the severe habitats of acidic pit lakes. one other bankruptcy presents an outline of tools at present used to remediate acidic pit lakes and deal with outflowing acidic water. the second one a part of the publication is a set of nearby surveys of pit lake difficulties from 3 ecu nations and Australia, and case stories of assorted person consultant lakes. a last case examine presents an cutting edge method of assessing the commercial price of recent pit lakes and balancing the prices and merits, a important device for selection makers.

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Extra resources for Acidic Pit Lakes: The Legacy of Coal and Metal Surface Mines

Sample text

This was verified when the previously acidic residual lake Niemegk was filled with river water to reduce acidity. While the introduced flooding water had neutralized the epilimnetic waters within a short time period during 2000, the deep waters retained their low pH until deep recirculation later during the year allowed for vertical exchange of dissolved substances, such as buffering chemicals, into the deeper water (Fig. 15, Boehrer et al. 2003). Gradients of pH are stable over longer time periods only where density gradients reduce vertical mixing.

The source of the salt in the river water was agricultural land use (McCullough et al. 2010), which is causing salinization of soil, groundwater, and river water in many regions of Australia. g. Jolly et al. (2001).

However, those investigations were done in water originating from a waste rock dump of a Canadian base metal mine. In pit lakes resulting from coal and lignite mining, only iron and aluminum reach concentrations high enough to form relevant buffering systems. Calcium, sodium, and potassium (Fig. 17a) do not show a clear concentration dependence on pH. This may be due to the formation of secondary minerals, such as gypsum and jarosite. 1). For at least some of the Australian pit lakes, the diversion of highly saline water into lakes from the local rivers during the first flush at the beginning of the wet season would have likely disrupted any relationship between these cations and pH.

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Acidic Pit Lakes: The Legacy of Coal and Metal Surface Mines by Walter Geller, Martin Schultze, Bob Kleinmann, Christian Wolkersdorfer

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