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Enrichment of trace elements in the clay size fraction of mining soils

Gomes, Patrícia ; Valente, Teresa ; Braga, M. Amália Sequeira ; Grande, J. A ; de la Torre, M. L

Environmental science and pollution research international, 2016-04, Vol.23 (7), p.6039-6045 [Periódico revisado por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

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Título:
Enrichment of trace elements in the clay size fraction of mining soils
Autor: Gomes, Patrícia ; Valente, Teresa ; Braga, M. Amália Sequeira ; Grande, J. A ; de la Torre, M. L
Assuntos: Acid mine drainage ; Aluminum Silicates - chemistry ; Aquatic Pollution ; Arsenic ; Arsenic - analysis ; Atmospheric Protection/Air Quality Control/Air Pollution ; clay ; clay minerals ; Contamination related to anthropic activities. Characterization and remediation ; Earth and Environmental Science ; Ecotoxicology ; Environment ; Environmental Chemistry ; Environmental Health ; Environmental Monitoring ; Environmental Pollution ; Environmental science ; Ferric Compounds ; goethite ; Iron Compounds ; jarosite ; landfills ; Metalloids ; metals ; Metals - analysis ; Microscopy ; Mineralogy ; Minerals ; Mines ; Mining ; Portugal ; Quartz ; Soil - chemistry ; Soil contamination ; Soil Pollutants - analysis ; soil pollution ; sorption ; Studies ; Sulfates ; sulfide minerals ; Sulfides - analysis ; toxic substances ; Trace elements ; Trace Elements - analysis ; Waste Disposal Facilities ; Waste Water Technology ; Water Management ; water pollution ; Water Pollution Control
É parte de: Environmental science and pollution research international, 2016-04, Vol.23 (7), p.6039-6045
Notas: http://dx.doi.org/10.1007/s11356-015-4236-x
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Descrição: Reactive waste dumps with sulfide minerals promote acid mine drainage (AMD), which results in water and soil contamination by metals and metalloids. In these systems, contamination is regulated by many factors, such as mineralogical composition of soil and the presence of sorption sites on specific mineral phases. So, the present study dedicates itself to understanding the distribution of trace elements in different size fractions (<2-mm and <2-μm fractions) of mining soils and to evaluate the relationship between chemical and mineralogical composition. Cerdeirinha and Penedono, located in Portugal, were the waste dumps under study. The results revealed that the two waste dumps have high degree of contamination by metals and arsenic and that these elements are concentrated in the clay size fraction. Hence, the higher degree of contamination by toxic elements, especially arsenic in Penedono as well as the role of clay minerals, jarosite, and goethite in retaining trace elements has management implications. Such information must be carefully thought in the rehabilitation projects to be planned for both waste dumps.
Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
Idioma: Inglês

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Enrichment of trace elements in the clay size fraction of mining soils

Gomes, Patrícia ; Valente, Teresa ; Braga, M. Amália Sequeira ; Grande, J. A ; de la Torre, M. L

Berlin/Heidelberg: Springer Berlin Heidelberg

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