Geochemistry and contamination of sediments and water in rivers affected by the rupture of tailings dams (Brumadinho, Brazil)

Applied Geochemistry, Journal Year: 2023, Volume and Issue: 152, P. 105644 - 105644

Published: March 25, 2023

Understanding the geochemistry and contamination of rivers affected by rupture tailings dams is paramount to emergency water resources management. This needs long-term monitoring tailings, sediments along river, understanding how interact physically geochemically with natural flowing water. An effort this kind uncommon because its cost opportunity. The purpose study was help filling gap using B1 dam (Brumadinho, Minas Gerais, Brazil, 25 January 2019) as example. To accomplish objective, 31 parameters sediment were monitored weekly for three years after event, spanning impacted non-impacted sectors Paraopeba River, including a reservoir that attenuating propagation downstream. Using hierarchical clustering analysis, assembled into groups. Associations between within groups pointed processes drivers controlling concentrations Fe, Mn, Al, As, Pb P in results suggested reductive dissolution Pb- Mn-bearing minerals key process. In rainy period, dissolved Mn sector raised exponentially temperature increase; reservoir, they showed episodic peaks triggered thermal stratification-related pH decreases. general, total > indicating predominant particle transport. Besides, higher Al season, sector. dry stream flow-controlled resuspension desorption Fe from sand grains raising their concentrations. declining trend probably related erosion acid soils watershed caused gradual increases P, desorbed clays silts. main conclusion left strong fingerprint especially which lasts keeps use River suspended.

Language: Английский

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Biomonitoring of the Paraopeba river: Cytotoxic, genotoxic and metal concentration analysis three years after the Brumadinho dam rupture - Minas Gerais, Brazil

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 964, P. 178618 - 178618

Published: Jan. 24, 2025

Language: Английский

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Resource utilization of decarbonized coal gasification slag in soil quality improvement: New insights into microbial community composition and environmental risk assessment

Ecotoxicology and Environmental Safety, Journal Year: 2025, Volume and Issue: 294, P. 118104 - 118104

Published: March 28, 2025

Language: Английский

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The Accuracy of Land Use and Cover Mapping across Time in Environmental Disaster Zones: The Case of the B1 Tailings Dam Rupture in Brumadinho, Brazil

Sustainability, Journal Year: 2023, Volume and Issue: 15(8), P. 6949 - 6949

Published: April 20, 2023

The rupture of a tailings dam causes several social, economic, and environmental impacts because people can die, the devastation caused by debris mud waves is expressive released substances may be toxic to ecosystem humans. There were two major failures in Minas Gerais state, Brazil, last decade. first was 2015 city Mariana second 2019 municipality Brumadinho. extent land use cover changes derived from those collapses an expression their impacts. Thus, knowing after these disasters essential help repair or mitigate degradation. This study aimed diagnose that occurred failure B1 Brumadinho affected Ferro-Carvão stream watershed. In addition objective, there intention investigating impact image preparation, as well spatial spectral resolution on classification’s accuracy. To accomplish goals, visible near-infrared bands Landsat (30 m), Sentinel-2 (10 PlanetScope Dove (4.77 m) images collected between 2018 2021 processed Google Earth Engine platform. Pixel Reduction Median tool used prepare record images, then random forest algorithm detect under different resolutions provide corresponding measures results showed affects accuracy, but also selected all capable accurately classifying watershed over time. After failure, mining/tailings areas increased impacted zone stream, while native forest, pasture, agricultural lands declined, exposing deterioration. environment recovered subsequent years (2020–2021) due removal mobilization.

Language: Английский

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

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 891, P. 164426 - 164426

Published: May 24, 2023

The collapse of B1 dam at the Córrego do Feijão mine Vale, S.A., located in Ferro-Carvão stream watershed (Brazil), released 11.7 Mm3 tailings rich iron and manganese, 2.8 entered Paraopeba River 10 km downstream. Seeking to predict evolution environmental deterioration river since break on January 25, 2019, present study generated exploratory normative scenarios based predictive statistical models, proposed mitigating measures subsides ongoing monitoring plans. segmented into three sectors: "anomalous" for distances ≤63.3 from site, "transition" (63.3-155.3 km), "natural" (meaning unimpacted by 2019; >155.3 km). predicted a spread until reaching sector rainy season 2021, their containment behind weir Igarapé thermoelectric plant sector, dry season. Besides, they water quality changes vigor riparian forests (NDVI index) along River, season, restriction these impacts indicated exceedances chlorophyll-a period 2019-January 2022, but not exclusively caused rupture as also occurred areas affected accident. Conversely, manganese clearly flagged failure, persist. most effective measure is likely dredging currently it represents solely 4.6 % what has river. Monitoring paramount update system enters route towards rewilding, must include sediments, vegetation, dredging.

Language: Английский

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Assessment of water quality based on statistical analysis of physical-chemical, biomonitoring and land use data: Manso River supply reservoir

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 912, P. 169554 - 169554

Published: Dec. 23, 2023

Language: Английский

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Groundwater flow and transport of metals under deposits of mine tailings: A case study in Brumadinho, Minas Gerais, Brazil

Case Studies in Chemical and Environmental Engineering, Journal Year: 2024, Volume and Issue: 9, P. 100690 - 100690

Published: March 13, 2024

The deposits of mine tailings can be a source groundwater contamination by metals. In this study, we simulated the concentrations iron, manganese and aluminum in potentially affected drainage from located Brumadinho (Brazil). aim was to verify whether observed region attributed these drainages. simulation used FREEWAT graphical interface, which incorporates MODFLOW model, hydraulic properties existing unconfined confined aquifers, spatial distribution tailings' deposits, dissolved iron measured drilled wells. period 20 years, starting 2019 after collapse B1 dam Córrego do Feijão Vale, S.A. modeling results revealed plumes metal progressively less dispersed over time, aquifer, increased aquifer. both aquifers were generally lower than legal limits imposed for human consumption, although some areas vicinity had higher those limits, especially widened time. most relevant result revelation that contribution wells might have not exceeded 1%. This is important management standpoint, because monitoring anthropogenic cases (where rock weathering dominates chemistry) becomes more challenging.

Language: Английский

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The geochemical and mineralogical controls on the release characteristics of potentially toxic elements from lead/zinc (Pb/Zn) mine tailings

Environmental Pollution, Journal Year: 2022, Volume and Issue: 315, P. 120328 - 120328

Published: Oct. 3, 2022

Language: Английский

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A partial least squares-path model of environmental degradation in the Paraopeba River, for rainy seasons after the rupture of B1 tailings dam, Brumadinho, Brazil

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 851, P. 158248 - 158248

Published: Aug. 24, 2022

Language: Английский

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Hydrologic Response to Land Use and Land Cover Change Scenarios: An Example from the Paraopeba River Basin Based on the SWAT Model

Water, Journal Year: 2023, Volume and Issue: 15(8), P. 1451 - 1451

Published: April 7, 2023

Human land use cover changes (LULCCs) can cause impacts on watershed lands and water resources. The regions with conflict suffer more intense erosion processes due to their high slope drainage density. study intends evaluate scenarios an absence of verify if it contribute reductions in surface runoff, avoiding the carriage tailings river channels. In study, SWAT model was used hydrological modeling Paraopeba River affected by rupture. results show that able reproduce flow data good very performances. quality indicators calibration step were NSE = 0.66, R2 0.69, PBIAS 5.2%, RSR 0.59, validation, 0.74, 0.77, 13.5%, 0.51. LULCC from 2000 2019 led a 70% increase lateral runoff (LATQ) 74% decrease aquifer groundwater. scenario capability no reduce 37% infiltration 265%, minimizing point diffuse contamination channel.

Language: Английский

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