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Mineralogical fingerprint and human health risk from potentially toxic elements of Fe mining tailings from the Fundão dam.
Camêlo, Danilo de Lima; Silva Filho, Luiz Aníbal da; Arruda, David Lukas de; Cyrino, Luan Mauri; Barroso, Gilberto Fonseca; Corrêa, Marcelo Metri; Barbeira, Paulo Jorge Sanches; Mendes, Danniel Brandão; Pasa, Vânya Marcia Duarte; Profeti, Demetrius.
Afiliação
  • Camêlo DL; Department of Agronomy, Federal University of Espírito Santo, Alegre, Espírito Santo 29500-000, Brazil. Electronic address: danilo.camelo@ufes.br.
  • Silva Filho LAD; Department of Agronomy, Federal University of Espírito Santo, Alegre, Espírito Santo 29500-000, Brazil.
  • Arruda DL; Department of Agronomy, Federal University of Espírito Santo, Alegre, Espírito Santo 29500-000, Brazil.
  • Cyrino LM; Department of Agronomy, Federal University of Espírito Santo, Alegre, Espírito Santo 29500-000, Brazil.
  • Barroso GF; Department of Oceanography and Ecology, Federal University of Espírito Santo, Vitória, Espírito Santo 29075-910, Brazil.
  • Corrêa MM; Federal University of Agreste of Pernambuco, Garanhuns, Pernambuco 55292-270, Brazil.
  • Barbeira PJS; Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil.
  • Mendes DB; Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil.
  • Pasa VMD; Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil.
  • Profeti D; Department of Chemistry and Physics, Federal University of Espírito Santo, Alegre, Espírito Santo 29500-000, Brazil.
Sci Total Environ ; 912: 169328, 2024 Feb 20.
Article em En | MEDLINE | ID: mdl-38104831
ABSTRACT
In 2015, >50 million cubic meters of Fe mining tailings were released into the Doce River basin from the Fundão dam, raising the question of its consequences on the affected ecosystems. This study aimed to establish a mineralogical-(geo)chemical association of potentially toxic elements (PTEs) from Fe mining tailings from the Fundão dam, collected seven days after the failure, through a multidisciplinary approach combining assessment of the risk to human health, environmental geochemistry, and mineralogy. Thus, eleven tailings samples were collected with the support of the Brazilian Military Police Fire Department. Granulometry, magnetic measurements, optical microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and sequential chemical extraction of PTEs analyses were performed. Contamination indexes, assessment of risk to human health, and Pearson correlation were calculated using the results of sequential chemical extraction of PTEs. The predominance of goethite in Fe oxyhydroxide concentrates from the mud indicates that the major source of hematite may not be from tailings, but from pre-existing soils and sediments, and/or preferential dissolution of hematite in deep flooded zones of the tailings column of the Fundão dam. Moreover, the high correlation of most carcinogenic PTEs with their crystallographic variables indicates that goethite is the primary source of contaminants. Goethites from Fe mining tailings showed high specific surface area and Al-substitution, and due to their greater stability and reactivity, the impacts on PTE sorption phenomena and bioavailability may be maintained for long periods. However, their lower dissolution rate, and the consequent release of heavy metals would promote greater resilience for affected ecosystems, preventing significant PTE inputs under periodic reduction conditions. More specific studies, involving the crystallographic characteristics of Fe oxyhydroxides should be developed since they may provide another critical component of this set of complex and dynamic variables that interfere with the bioavailability of metals in ecosystems.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Compostos Férricos / Compostos de Ferro / Metais Pesados / Minerais Limite: Humans País/Região como assunto: America do sul / Brasil Idioma: En Revista: Sci Total Environ Ano de publicação: 2024 Tipo de documento: Article País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Compostos Férricos / Compostos de Ferro / Metais Pesados / Minerais Limite: Humans País/Região como assunto: America do sul / Brasil Idioma: En Revista: Sci Total Environ Ano de publicação: 2024 Tipo de documento: Article País de publicação: Holanda