Rare Earth Elements, Iron and Manganese in Ochre-precipitates and Wetland Soils of a Passive Treatment System for Acid Mine Drainage

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• 作者：M.I. Prudê ; ncio^a ; ^{iprudenc@ctn.tecnico.ulisboa.pt} ; T. Valente^b ; R. Marques^a ; M.A. Sequeira Braga^b ; J. Pamplona^b
• 关键词：Acid mine drainage ; rare earth elements ; iron and manganese ; ochre-precipitates ; Jales ; Portugal
• 刊名：Procedia Earth and Planetary Science
• 出版年：2017
• 出版时间：2017
• 年：2017
• 卷：17
• 期：Complete
• 页码：932-935
• 全文大小：216 K
• 卷排序：17

文摘

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.