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Environmental impact on surface water, stream sediments and macrophytes
from a mining area: the case study of the Água Forte and Roxo streams at the
Aljustrel mine (Portugal)
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Aljustrel is a mining district located in Portugal, at
the SW sector of the Iberian Pyrite Belt. The exploitation started during the Roman occupation and the
environmental impacts of that activity are evident in
the area. The main potential problem comes from
the tailings deposited at the site that contain large
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percolates easily over and through the deposited
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and stream sediments. That impact is evident at Água
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the Aljustrel mine area.
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macrophyte Scirpus holoschoenus, collected along
the stream banks, for phytoremediation of AMD.
9th International Symposium on Environmental Geochemistry
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chemical characteristics and ecotoxicological paramHWHUVOXPLQHVFHQFHLQKLELWLRQRI9LEULRÀVFKHULDQG
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trace element pool in the sediments. Scirpus holRVFKRHQXVVDPSOHVZHUHDQDO\]HGLQRUGHUWRDVVHVV
trace element concentrations in the aboveground
plant material.
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the same toxic response is eliminated, evidencing the
high contribution of the acidity to the toxic response.
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adapted to the extreme conditions found at Água
Forte stream, can be potentially used for metal rePRYDOLQFRQVWUXFWHGZHWODQGVWRWUHDW$0'
- Instituto Politécnico de Beja, Escola Superior Agrária, Rua Pedro Soares, 7800-295 Beja, Portugal ([email protected])
b DTCA - Instituto Politécnico de Beja, Escola Superior Agrária, Rua Pedro Soares, 7800-295 Beja, Portugal
c
DTCA - Instituto Politécnico de Beja, Escola Superior Agrária, Rua Pedro Soares, 7800-295 Beja, Portugal
9th International Symposium on Environmental Geochemistry