Risk potential of bottom sediments affected by mining tailings from the Fundão dam/ Brazil
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , |
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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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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1797052649170796544 |