Scenarios of environmental deterioration in the Paraopeba River, in the three years after the breach of B1 tailings dam in Brumadinho (Minas Gerais, Brazil)

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dc.contributor.authorMendes, Rafaella Gouveia
dc.contributor.authordo Valle Junior, Renato Farias
dc.contributor.authorde Melo Silva, Maytê Maria Abreu Pires
dc.contributor.authorde Morais Fernandes, Gabriel Henrique
dc.contributor.authorFernandes, Luís Filipe Sanches
dc.contributor.authorPissarra, Teresa Cristina Tarlé [UNESP]
dc.contributor.authorde Melo, Marília Carvalho
dc.contributor.authorValera, Carlos Alberto
dc.contributor.authorPacheco, Fernando António Leal [UNESP]
dc.contributor.institutionFederal Institute of Triângulo Mineiro (IFTM)
dc.contributor.institutionUniversity of Trás-os-Montes e Alto Douro
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionCidade Administrativa do Estado de Minas Gerais
dc.contributor.institutionCoordenadoria Regional das Promotorias de Justiça do Meio Ambiente das Bacias dos Rios Paranaíba e Baixo Rio Grande
dc.date.accessioned2023-07-29T16:14:57Z
dc.date.available2023-07-29T16:14:57Z
dc.date.issued2023-09-15
dc.description.abstractThe collapse of B1 dam at the Córrego do Feijão mine of Vale, S.A., located in the Ferro-Carvão stream watershed (Brazil), released 11.7 Mm3 of tailings rich in iron and manganese, and 2.8 Mm3 entered the Paraopeba River 10 km downstream. Seeking to predict the evolution of environmental deterioration in the river since the dam break on January 25, 2019, the present study generated exploratory and normative scenarios based on predictive statistical models, and proposed mitigating measures and subsides to ongoing monitoring plans. The scenarios segmented the Paraopeba into three sectors: “anomalous” for distances ≤63.3 km from the B1 dam site, “transition” (63.3–155.3 km), and “natural” (meaning unimpacted by the mine tailings in 2019; >155.3 km). The exploratory scenarios predicted a spread of the tailings until reaching the “natural” sector in the rainy season of 2021, and their containment behind the weir of Igarapé thermoelectric plant located in the “anomalous” sector, in the dry season. Besides, they predicted the deterioration of water quality and changes to the vigor of riparian forests (NDVI index) along the Paraopeba River, in the rainy season, and a restriction of these impacts to the “anomalous” sector in the dry season. The normative scenarios indicated exceedances of chlorophyll-a in the period January 2019–January 2022, but not exclusively caused by the rupture of B1 dam as they also occurred in areas not affected by the accident. Conversely, the manganese exceedances clearly flagged the dam failure, and persist. The most effective mitigating measure is likely the dredging of the tailings in the “anomalous” sector, but currently it represents solely 4.6 % of what has entered the river. Monitoring is paramount to update the scenarios until the system enters a route towards rewilding, and must include water and sediments, the vigor of riparian vegetation, and the dredging.en
dc.description.affiliationFederal Institute of Triângulo Mineiro (IFTM), Uberaba Campus, Geoprocessing Laboratory, MG
dc.description.affiliationCenter for Research and Agro-environmental and Biological Technologies (CITAB) University of Trás-os-Montes e Alto Douro, Ap. 1013
dc.description.affiliationFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane, s/n, SP
dc.description.affiliationSecretaria de Estado de Meio Ambiente e Desenvolvimento Sustentável Cidade Administrativa do Estado de Minas Gerais, Rodovia João Paulo II, Minas Gerais
dc.description.affiliationCoordenadoria Regional das Promotorias de Justiça do Meio Ambiente das Bacias dos Rios Paranaíba e Baixo Rio Grande, Rua Coronel Antônio Rios, 951, MG
dc.description.affiliationCenter of Chemistry of Vila Real (CQVR) University of Trás-os-Montes e Alto Douro, Ap. 1013
dc.description.affiliationUnespFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane, s/n, SP
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipUniversidade de Trás-os-Montes e Alto Douro
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundo Regional para a Ciência e Tecnologia
dc.description.sponsorshipFundação para a Ciência e a Tecnologia
dc.description.sponsorshipIdCAPES: 88887.716753/2022-00
dc.description.sponsorshipIdFundo Regional para a Ciência e Tecnologia: UIDB/ 00616/2020
dc.description.sponsorshipIdFundação para a Ciência e a Tecnologia: UIDB/04033/2020
dc.description.sponsorshipIdFundo Regional para a Ciência e Tecnologia: UIDP/ 00616/2020
dc.identifierhttp://dx.doi.org/10.1016/j.scitotenv.2023.164426
dc.identifier.citationScience of the Total Environment, v. 891.
dc.identifier.doi10.1016/j.scitotenv.2023.164426
dc.identifier.issn1879-1026
dc.identifier.issn0048-9697
dc.identifier.scopus2-s2.0-85160418221
dc.identifier.urihttp://hdl.handle.net/11449/249998
dc.language.isoeng
dc.relation.ispartofScience of the Total Environment
dc.sourceScopus
dc.subjectDredging
dc.subjectEnvironmental deterioration
dc.subjectMonitoring
dc.subjectRiverine ecosystem
dc.subjectStatistical forecasts
dc.subjectWater quality
dc.titleScenarios of environmental deterioration in the Paraopeba River, in the three years after the breach of B1 tailings dam in Brumadinho (Minas Gerais, Brazil)en
dc.typeArtigo

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