Risk potential of bottom sediments affected by mining tailings from the Fundão dam/ Brazil

Detalhes bibliográficos
Autor(a) principal: Reis, Deyse Almeida dos
Data de Publicação: 2020
Outros Autores: Marques, Lilian de Souza, Nascimento, Laura Pereira do, Santiago, Aníbal da Fonseca
Tipo de documento: Artigo
Idioma: por
Título da fonte: Research, Society and Development
Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/4041
Resumo: In 2015, the Gualaxo do Norte river basin suffered from a serious environmental disaster that affected the quality of the river environment due to the disruption of the Fundão dam structures located in the Bento Rodrigues sub-district, Mariana, Minas Gerais/ Brazil. Bottom sediments were one of the environmental matrices most affected by the disaster. In order to assess the risk potential of these matrices and the ecological risk of the aforementioned river, samples were collected from four sample stations on the stretch upstream and downstream of the environmental disaster. These samples were analyzed according to procedure BCR 701, obtaining metals in the exchangeable, reducible, oxidizable and residual fractions. In the exchangeable phase in which metals and semimetals are potentially available to aquatic organisms, concentrations of barium, copper, iron, manganese and zinc were measured, showing a percentage in all sampling stations ranging from 3.7-61.0%, 6.1 -10.8%, 0.2-7.6%, 1.6-23.1%, and 4.1-16.7%. Regarding the potential for ecological risk, there was a greater ecological risk in the stations affected by the iron ore tailings from the dam. Barium concentrations presented medium to extremely high risk at the sampling stations analyzed. This result possibly indicates that its concentrations in the Gualaxo do Norte River may cause harmful effects to aquatic biota.
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spelling Risk potential of bottom sediments affected by mining tailings from the Fundão dam/ BrazilRiesgo potencial de sedimentos del fondo afectados por relaves mineros de la presa Fundão/ BrasilPotencial de risco dos sedimentos de fundo afetados por rejeitos de mineração oriundos da barragem de Fundão/ BrasilDesastre ambientalExtração sequencialMetaisQuadrilátero FerríferoRio Doce.Desastre ambientalExtracción secuencialMetalesCuadrilátero de hierroRio Doce.Environmental disasterSequential extractionMetalsIron QuadrilateralDoce River.In 2015, the Gualaxo do Norte river basin suffered from a serious environmental disaster that affected the quality of the river environment due to the disruption of the Fundão dam structures located in the Bento Rodrigues sub-district, Mariana, Minas Gerais/ Brazil. Bottom sediments were one of the environmental matrices most affected by the disaster. In order to assess the risk potential of these matrices and the ecological risk of the aforementioned river, samples were collected from four sample stations on the stretch upstream and downstream of the environmental disaster. These samples were analyzed according to procedure BCR 701, obtaining metals in the exchangeable, reducible, oxidizable and residual fractions. In the exchangeable phase in which metals and semimetals are potentially available to aquatic organisms, concentrations of barium, copper, iron, manganese and zinc were measured, showing a percentage in all sampling stations ranging from 3.7-61.0%, 6.1 -10.8%, 0.2-7.6%, 1.6-23.1%, and 4.1-16.7%. Regarding the potential for ecological risk, there was a greater ecological risk in the stations affected by the iron ore tailings from the dam. Barium concentrations presented medium to extremely high risk at the sampling stations analyzed. This result possibly indicates that its concentrations in the Gualaxo do Norte River may cause harmful effects to aquatic biota.En 2015, la cuenca del río Gualaxo do Norte sufrió un grave desastre ambiental que afectó la calidad del medio ambiente del río debido a la interrupción de las estructuras de la presa Fundão ubicadas en el subdistrito de Bento Rodrigues, Mariana, Minas Gerais / Brasil. Los sedimentos del fondo fueron una de las matrices ambientales más afectadas por el desastre. Para evaluar el potencial de riesgo de estas matrices y el riesgo ecológico del río antes mencionado, se recolectaron muestras de cuatro estaciones de muestreo en el tramo aguas arriba y aguas abajo del desastre ambiental. Estas muestras fueron analizadas según el procedimiento BCR 701, obteniendo metales en las fracciones intercambiables, reducibles, oxidables y residuales. En la fase intercambiable en la que los metales y los semimetales están potencialmente disponibles para los organismos acuáticos, se midieron las concentraciones de bario, cobre, hierro, manganeso y zinc, mostrando un porcentaje en todas las estaciones de muestreo que oscila entre 3.7-61.0%, 6.1 -10.8%, 0.2-7.6%, 1.6-23.1% y 4.1-16.7%. Con respecto al potencial de riesgo ecológico, hubo un mayor riesgo ecológico en las estaciones afectadas por los relaves de mineral de hierro de la presa. Las concentraciones de bario presentaron un riesgo medio a extremadamente alto en las estaciones de muestreo analizadas. Este resultado posiblemente indica que sus concentraciones en el río Gualaxo do Norte pueden causar efectos nocivos para la biota acuática.Em 2015, a bacia do rio Gualaxo do Norte sofreu com um grave desastre ambiental que afetou a qualidade do ambiente fluvial devido ao rompimento das estruturas da barragem de Fundão localizada no subdistrito Bento Rodrigues, Mariana, Minas Gerais/Brasil. Os sedimentos de fundo foram uma das matrizes ambientais mais afetadas pelo desastre. Com o objetivo de avaliar o potencial de risco dessas matrizes e o risco ecológico do rio citado foram coletadas amostras em quatro estações amostrais no trecho a montante e a jusante ao desastre ambiental. Essas amostras foram analisadas de acordo com procedimento BCR 701, obtendo metais nas frações trocável, redutível, oxidável e residual. Na fase trocável em que os metais e semimetais estão potencialmente disponíveis aos organismos aquáticos foram mensuradas concentrações de bário, cobre, ferro, manganês e zinco apresentaram porcentagem em todas as estações de amostragem variando de 3,7-61,0%, 6,1-10,8%, 0,2-7,6%, 1,6-23,1% e 4,1-16,7%. Em relação ao potencial do risco ecológico observou-se um maior risco ecológico nas estações afetadas pelos rejeitos de minério de ferro da barragem. As concentrações de bário apresentaram risco médio a extremamente alto nas estações de amostragem analisadas. Esse resultado possivelmente indica que suas concentrações no rio Gualaxo do Norte podem provocar efeitos deletérios à biota aquática.Research, Society and Development2020-05-27info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/404110.33448/rsd-v9i7.4041Research, Society and Development; Vol. 9 No. 7; e611974041Research, Society and Development; Vol. 9 Núm. 7; e611974041Research, Society and Development; v. 9 n. 7; e6119740412525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIporhttps://rsdjournal.org/index.php/rsd/article/view/4041/3999Copyright (c) 2020 Deyse Almeida dos Reis, Lilian de Souza Marques, Laura Pereira do Nascimento, Aníbal da Fonseca Santiagoinfo:eu-repo/semantics/openAccessReis, Deyse Almeida dosMarques, Lilian de SouzaNascimento, Laura Pereira doSantiago, Aníbal da Fonseca2020-08-20T18:05:03Zoai:ojs.pkp.sfu.ca:article/4041Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:28:02.011837Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false
dc.title.none.fl_str_mv Risk potential of bottom sediments affected by mining tailings from the Fundão dam/ Brazil
Riesgo potencial de sedimentos del fondo afectados por relaves mineros de la presa Fundão/ Brasil
Potencial de risco dos sedimentos de fundo afetados por rejeitos de mineração oriundos da barragem de Fundão/ Brasil
title Risk potential of bottom sediments affected by mining tailings from the Fundão dam/ Brazil
spellingShingle Risk potential of bottom sediments affected by mining tailings from the Fundão dam/ Brazil
Reis, Deyse Almeida dos
Desastre ambiental
Extração sequencial
Metais
Quadrilátero Ferrífero
Rio Doce.
Desastre ambiental
Extracción secuencial
Metales
Cuadrilátero de hierro
Rio Doce.
Environmental disaster
Sequential extraction
Metals
Iron Quadrilateral
Doce River.
title_short Risk potential of bottom sediments affected by mining tailings from the Fundão dam/ Brazil
title_full Risk potential of bottom sediments affected by mining tailings from the Fundão dam/ Brazil
title_fullStr Risk potential of bottom sediments affected by mining tailings from the Fundão dam/ Brazil
title_full_unstemmed Risk potential of bottom sediments affected by mining tailings from the Fundão dam/ Brazil
title_sort Risk potential of bottom sediments affected by mining tailings from the Fundão dam/ Brazil
author Reis, Deyse Almeida dos
author_facet Reis, Deyse Almeida dos
Marques, Lilian de Souza
Nascimento, Laura Pereira do
Santiago, Aníbal da Fonseca
author_role author
author2 Marques, Lilian de Souza
Nascimento, Laura Pereira do
Santiago, Aníbal da Fonseca
author2_role author
author
author
dc.contributor.author.fl_str_mv Reis, Deyse Almeida dos
Marques, Lilian de Souza
Nascimento, Laura Pereira do
Santiago, Aníbal da Fonseca
dc.subject.por.fl_str_mv Desastre ambiental
Extração sequencial
Metais
Quadrilátero Ferrífero
Rio Doce.
Desastre ambiental
Extracción secuencial
Metales
Cuadrilátero de hierro
Rio Doce.
Environmental disaster
Sequential extraction
Metals
Iron Quadrilateral
Doce River.
topic Desastre ambiental
Extração sequencial
Metais
Quadrilátero Ferrífero
Rio Doce.
Desastre ambiental
Extracción secuencial
Metales
Cuadrilátero de hierro
Rio Doce.
Environmental disaster
Sequential extraction
Metals
Iron Quadrilateral
Doce River.
description In 2015, the Gualaxo do Norte river basin suffered from a serious environmental disaster that affected the quality of the river environment due to the disruption of the Fundão dam structures located in the Bento Rodrigues sub-district, Mariana, Minas Gerais/ Brazil. Bottom sediments were one of the environmental matrices most affected by the disaster. In order to assess the risk potential of these matrices and the ecological risk of the aforementioned river, samples were collected from four sample stations on the stretch upstream and downstream of the environmental disaster. These samples were analyzed according to procedure BCR 701, obtaining metals in the exchangeable, reducible, oxidizable and residual fractions. In the exchangeable phase in which metals and semimetals are potentially available to aquatic organisms, concentrations of barium, copper, iron, manganese and zinc were measured, showing a percentage in all sampling stations ranging from 3.7-61.0%, 6.1 -10.8%, 0.2-7.6%, 1.6-23.1%, and 4.1-16.7%. Regarding the potential for ecological risk, there was a greater ecological risk in the stations affected by the iron ore tailings from the dam. Barium concentrations presented medium to extremely high risk at the sampling stations analyzed. This result possibly indicates that its concentrations in the Gualaxo do Norte River may cause harmful effects to aquatic biota.
publishDate 2020
dc.date.none.fl_str_mv 2020-05-27
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/4041
10.33448/rsd-v9i7.4041
url https://rsdjournal.org/index.php/rsd/article/view/4041
identifier_str_mv 10.33448/rsd-v9i7.4041
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/4041/3999
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Research, Society and Development
publisher.none.fl_str_mv Research, Society and Development
dc.source.none.fl_str_mv Research, Society and Development; Vol. 9 No. 7; e611974041
Research, Society and Development; Vol. 9 Núm. 7; e611974041
Research, Society and Development; v. 9 n. 7; e611974041
2525-3409
reponame:Research, Society and Development
instname:Universidade Federal de Itajubá (UNIFEI)
instacron:UNIFEI
instname_str Universidade Federal de Itajubá (UNIFEI)
instacron_str UNIFEI
institution UNIFEI
reponame_str Research, Society and Development
collection Research, Society and Development
repository.name.fl_str_mv Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)
repository.mail.fl_str_mv rsd.articles@gmail.com
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