Abstract (EN):
The coal waste piles that result from Douro Coalfield exploitation represent one of the most
significant environmental impacts caused by mining activities. The aim of this work is the petrographic
and geochemical characterization of the organic fraction of fifteen coal waste piles, to identify and
understand potential impacts on the environment. The data point to the existence of oxidation, acid
drainage and consequently, the leaching of elements to the environment. The self-combustion processes
in three coal waste piles enhance the acid drainage and leaching
Language:
Portuguese
Type (Professor's evaluation):
Scientific
Notes:
KEYWORDS: Douro Coalfield, coal waste piles, organic petrography, organic geochemistry,
environmental impact
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