Abstract
Abstract The paper deals with an application of bacterial leaching on two selected samples from old ecological loads situated in the Karlovy Vary Region. To be specific, they are heaps in Prebuz and Kraslice. Bacterial leaching was applied making use of Acidithiobacillus ferrooxidans bacteria and lasted 28 days. The results imply that the given method is suitable for the retrieval of valuable metals from waste and may help to deal with the issue of old heaps and dumps.
Highlights
Mining of mineral resources and utilization of lithospheric sources always represent a substantial interference with the geological conditions in any territory
From the presented results it is clear that the recovery with bacterial leaching depends on the primary concentration of an element in the waste rock
As exhibited variable behavior during leaching by Acidithiobacillus ferrooxidans; the ability of the element to be released is probably connected with the original concentration of the element in the waste rock (Fig. 3)
Summary
Mining of mineral resources and utilization of lithospheric sources always represent a substantial interference with the geological conditions in any territory. Mining endangers both the deposits and the natural environment. It causes decreases in the land resources, destruction of the vegetation cover, damage to the agricultural, forest and water management, destruction of settlements, worse environmental conditions and results in the anthropogenic georelief (BOSECKER, 1997; ZÁVADA and BOUCHAL, 2010). The major manifestations of the influence on the geomorphology by mining are anthropogenic movements caused by undermining, changes in the georelief (miming forms), influence of mining and waste on the landscape (removal of overburden, heaps, preparation tailings), pollution by preparation processes, collapse of quarry slopes and induced bursts (BROMBACHER et al, 1997; FEČKO et al, 2004).
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