Rare earth elements, iron and manganese in ochre-precipitates and wetland soils of a passive treatment system for acid mine drainage

The rare earth elements (REE) along with iron and manganese distribution in ochre-precipitates and wetland soils in a passive system for acid mine drainage treatment (Jales, Portugal) was studied. The results obtained by instrumental neutron activation analysis showed a higher incorporation of the l...

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Bibliographic Details
Main Author: Prudêncio, M. I. (author)
Other Authors: Valente, Teresa Maria Fernandes (author), Marques, R. (author), Braga, Maria Amália Castro Sequeira (author), Pamplona, J. (author)
Format: conferencePaper
Language:eng
Published: 2017
Subjects:
Acid mine drainage
Rare earth elements
Iron and manganese
Ochre-precipitates
Jales
Portugal
Ciências Naturais::Ciências da Terra e do Ambiente
Science & Technology
Online Access:http://hdl.handle.net/1822/45636
Country:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/45636
Description
Summary:The rare earth elements (REE) along with iron and manganese distribution in ochre-precipitates and wetland soils in a passive system for acid mine drainage treatment (Jales, Portugal) was studied. The results obtained by instrumental neutron activation analysis showed a higher incorporation of the light REE (particularly La and Ce) by the ochre-precipitates resulting from the mine water-limestone interaction. These fluffy materials influence the entrance of the first wetland where a correlation between Fe and La and Ce was found. Then Mn phases appear to play a more important role controlling REE distribution in the remaining area of the wetland soils.

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