Details zur Publikation

Referenztyp Zeitschriften
DOI / URL Link
Titel (primär) Restoration of open pit lignite mining in the former GDR: lessons to be learnt from Zwenkau
Autor Wiegand, U.; Schreck, P.; Schreiter, P.; Lerche, I.; Gläßer, W.;
Journal / Serie Energy & Environment
Erscheinungsjahr 2003
Department HDG;
Band/Volume 14
Heft 4
Sprache englisch;
Abstract

The interactions have been investigated between the near-surface sediments of the sediment dumping at the Zwenkau open pit (used for extraction of lignite) and the produced mining water. These environmental impacts are the legacy of the energy policy of the former GDR. The pyrite oxidation that takes place in the overburden sediments causes the formation of an oxidation front and the pH-value of sediments falls to about 2 to 3 very soon after deposition. The primary mineral contents are destroyed and a considerable number of elements are mobilized that remain locally in the sediment pores. Because of the very weak seepage, rainfall remains in the alluvial areas as dump lakes. The dump lakes are very acidic because the rainwater transports the mobilized elements from the surface. Autochthonous and allochthonous formations of secondary minerals have been observed and analysed. A continuously ongoing interaction of exogenous and endogenous effects hinders the hydrological and geochemical equilibrium stabilisation. What to do with such a "moonscape" is considered in the conclusions.

ID 5303
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=5303
Wiegand, U., Schreck, P., Schreiter, P., Lerche, I., Gläßer, W. (2003):
Restoration of open pit lignite mining in the former GDR: lessons to be learnt from Zwenkau
Energy & Environment 14 (4), 437 - 449