Role of backwater effects on the attenuation of metal spreading in rivers: A study in the Paraopeba River after the B1 tailings dam collapse in Brumadinho

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Autor(es): dc.contributorUniversity of Trás-os-Montes e Alto Douro-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorFederal Institute of Triangulo ˆ Mineiro (IFTM)-
Autor(es): dc.contributorCoordenadoria Regional das Promotorias de Justiça do Meio Ambiente das Bacias dos Rios Paranaíba e Baixo Rio Grande-
Autor(es): dc.contributorCidade Administrativa do Estado de Minas Gerais-
Autor(es): dc.creatorLima, Victor Hugo Sarrazin-
Autor(es): dc.creatorPacheco, Fernando António Leal-
Autor(es): dc.creatorMoura, João Paulo-
Autor(es): dc.creatorPissarra, Teresa Cristina Tarlé-
Autor(es): dc.creatordo Valle Junior, Renato Farias-
Autor(es): dc.creatorde Melo Silva, Maytê Maria Abreu Pires-
Autor(es): dc.creatorValera, Carlos Alberto-
Autor(es): dc.creatorde Melo, Marília Carvalho-
Autor(es): dc.creatorSanches Fernandes, Luís Filipe-
Data de aceite: dc.date.accessioned2025-08-21T19:45:36Z-
Data de disponibilização: dc.date.available2025-08-21T19:45:36Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-06-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.cscee.2024.100740-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/304052-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/304052-
Descrição: dc.descriptionThe B1 tailings dam of Córrego do Feijão iron-ore mine of Vale SA, located in the Ferro-Carvão stream watershed (Brumadinho municipality, state of Minas Gerais, Brazil), collapsed in 25 January 2019. This accident had unprecedent water resources management impacts in the Paraopeba River basin, the parent of Ferro-Carvão stream, marked by the suspension of drinking water supply to the Metropolitan Region of Belo Horizonte, which was decided after the huge rise of turbidity and metal concentrations in the aquatic environment, mostly iron and manganese. The water authorities keep the use of Paraopeba River downstream of B1 dam site prohibited today, and entailed a number of studies to understand and predict the evolution of metal spreading before envisaging any suspension lift. One of those studies is presented now and had the purpose to assess the role of a weir located in the Paraopeba River and 40 km downstream from the Ferro-Carvão stream outlet, in the attenuation of iron and manganese fluxes. The weir is called Igarapé and the modeling of dissolved iron and manganese using the RiverFlow 2D software revealed a 33.5-fold attenuation of iron fluxes per unit length, from 3062.0 g/yr. km upstream the weir to 91.4 g/yr. km downstream, under stream flows typical of 10-year return periods. The attenuation was related with backwater effects that reduced flow velocities in the inundated stream banks during flood events, which induced the precipitation of iron-bearing sand particles. The attenuation was not visible for manganese because the element is preferably included in silt and clay particles that were not affected by the backwater effects because of their small sizes (and hence weights). Our results corroborate previous outcomes that highlighted the capacity of Igarapé weir to retain the B1 dam tailings, decelerating their propagation downstream, and opened a time window to remove the large volume still deposited over the river bed through dredging. The monitoring and eventual treatment of the stream banks is also paramount because the backwater effects seem to be related with flooding.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionUniversidade de Trás-os-Montes e Alto Douro-
Descrição: dc.descriptionCenter for Research and Agro-environmental and Biological Technologies - CITAB University of Trás-os-Montes e Alto Douro, Ap. 1013-
Descrição: dc.descriptionCenter of Chemistry of Vila Real - CQVR University of Trás-os-Montes e Alto Douro, Ap. 1013-
Descrição: dc.descriptionSão Paulo State University (Unesp) School of Agricultural and Veterinarian Sciences, Jaboticabal. Via Prof. Paulo Donato Castellane, s/n, SP-
Descrição: dc.descriptionGeoprocessing Laboratory Uberaba Campus Federal Institute of Triangulo ˆ Mineiro (IFTM), MG-
Descrição: dc.descriptionCoordenadoria Regional das Promotorias de Justiça do Meio Ambiente das Bacias dos Rios Paranaíba e Baixo Rio Grande, Rua Coronel Antônio Rios, 951, MG-
Descrição: dc.descriptionSecretaria de Estado de Meio Ambiente e Desenvolvimento Sustentável Cidade Administrativa do Estado de Minas Gerais, Rodovia João Paulo II, 4143, Bairro Serra Verde, Minas Gerais-
Descrição: dc.descriptionSão Paulo State University (Unesp) School of Agricultural and Veterinarian Sciences, Jaboticabal. Via Prof. Paulo Donato Castellane, s/n, SP-
Idioma: dc.languageen-
Relação: dc.relationCase Studies in Chemical and Environmental Engineering-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBackwater effect-
Palavras-chave: dc.subjectDredging-
Palavras-chave: dc.subjectRiver contamination by metals-
Palavras-chave: dc.subjectRiverFlow2D model-
Palavras-chave: dc.subjectTailings dam rupture-
Palavras-chave: dc.subjectWeir-
Título: dc.titleRole of backwater effects on the attenuation of metal spreading in rivers: A study in the Paraopeba River after the B1 tailings dam collapse in Brumadinho-
Tipo de arquivo: dc.typelivro digital-
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