Integrating reverse osmosis to a conventional river water treatment plant as a strategy to produce drinking water after mining dam rupture events: a case study

Environmental Technology, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 12

Published: March 6, 2024

Incidents of mining dam failure have compromised the water quality, threatening supply. Different strategies are sought to restore impacted area and guarantee One example is treatment plants that treat high-polluted waters within required limits for their multiple usages. The current study assesses integration reverse osmosis (RO) a river plant (RWTP) installed in Brumadinho (Minas Gerais, Brazil) from Ferro-Carvão stream by B1 rupture 2019. RWTP started eleven months after equipped with eight coagulation-flocculation tanks followed pressurised filters. A pilot RO was polish treated RWTP. Water samples were collected at different points characterised physical, chemical, biological parameters (160 total). results compared historical data (1997–2022) reveal alterations quality event. compliance both only achieved treatment, which acted as an additional barrier 30 contaminants. indexes (WQI) suggested raw surface water, even incident, unfit consumption (WQI: 133.9) whereas permeate ranked excellent rating grid 23.7).

Language: Английский

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Five years after the Brumadinho dam collapse: Evaluation of water quality based on combined analysis of land use and environmental data

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 957, P. 177619 - 177619

Published: Nov. 20, 2024

Language: Английский

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Water quality emergency monitoring networks: A method for identifying non-critical variables based on Shannon's entropy

Journal of Hydroinformatics, Journal Year: 2024, Volume and Issue: 26(3), P. 658 - 682

Published: March 1, 2024

Abstract In the occurrence of environmental disasters involving water resources, deploying an emergency monitoring network for assessing quality is within first measures to be taken. Emergency networks usually cover a large set variables and stations along watershed. Focusing on that represent greater risk environment have less predictable spatial temporal distribution strategy optimize efforts monitoring. The goal this study assess use Shannon's entropy identify non-critical in implemented watershed impacted by collapse mining iron tailing dam, Doce River (Brazil). Monitoring were grouped into subregions through cluster analysis was used estimate information redundancy monitored variables. From after checking compliance with normative, identified. Results indicated 32–50% monitored. managers find method robust tool improve performance. However, special attention should paid outliers' presence can bias analyses based entropy.

Language: Английский

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A structural equation model of land capability and related drivers: Implications for land degradation forecasting in a tropical river basin

Land Degradation and Development, Journal Year: 2022, Volume and Issue: 34(6), P. 1778 - 1794

Published: Dec. 9, 2022

Abstract Land degradation is a worldwide problem with natural and anthropogenic causes. An important cause of land uses that deviate from capability, which the “natural” use. Despite conscience scientists about this issue, studies are lacking set up quantitative nexus between capability related drivers. This essential because it allows anticipating changes in drivers promote or recede degradation. In study, partial least squares–path model (PLS–PM) was used to help closing gap. The pilot study occurred seven Paraopeba River sub‐basins located State Minas Gerais (Brazil), where dominated by mosaics forests pastures. assessed ruggedness number, being inversely proportional it. Among multiple potential initially included model, collinearity other consistency performance analyses indicated percentage latosols (re)forested areas, annual rainfall, water‐related processes (e.g., weathering, nutrient leaching) as prominent studied region. results linked increases latosol forest occupation runoff reduction [runoff = × (−0.640) + (−0.156) reforestation (−0.379)], suggesting an attenuation erosion these parameters, namely gully impacts on number sequel. weathering carbonate rocks also PLS–PM exposed relationship products rock dissolution: alkalinity (−0.578) total magnesium (0.462) dissolved oxygen (−0.418). addition highlighting capable changing overtime, equations brought attention measures could improve region thus preventing management practices raise soil's through aeration) deficiency foliar sprays). network cause‐and‐effect relationships finally elucidate use would bring basin towards better status, such conversions pasture land. Future work expected further benefits for specific changes, testing socioeconomic development scenarios.

Language: Английский

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Effects of mine tailings on aquatic macroinvertebrate structure within the first year after a major dam collapse

Marine and Freshwater Research, Journal Year: 2023, Volume and Issue: 74(18), P. 1506 - 1518

Published: Dec. 7, 2023

Context The collapse of a tailings dam in Brumadinho (Brazil) is considered one the largest mining disasters worldwide. mine polluted water and sediment Paraopeba River downstream collapsed dam. effects on biological communities remain unknown. Aims We evaluated aquatic macroinvertebrate assemblages highlighted potential bioindicator for cumulative spill. Methods sampled macroinvertebrates upstream during first dry wet seasons following collapse. Key results found that turbidity (likely non-related to tailings) negatively affected macroinvertebrates’ abundance, but richness was by presence tailings. riparian land use composition. identified Helicopsyche spp. as bioindicator. Conclusions provide circumstantial evidence macroinvertebrates, suggesting it may have their caused loss most sites. Implications suggest are biomonitoring tools evaluating assemblages.

Language: Английский

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Análise dos impactos ambientais da ruptura da barragem de mineração em Brumadinho, MG, Brasil: Uma abordagem baseada em dados geoespaciais

Published: April 15, 2024

In 2019, the collapse of Vale S.A.'s tailings dam in Brumadinho (MG) was one most tragic and impactful disasters Brazilian history.This tragedy not only cost human lives, but also left a trail environmental destruction that resonated throughout nation.Since then, main focuses study area has been assessing damage caused by this event.In context, use geospatial data emerges as crucial tool for understanding extent nuances these impacts.Geospatial provides comprehensive detailed view environment affected collapse, making it possible to identify quantify local landscape.To end, Google Earth Engine (GEE) platform is great value, vast collection satellite images sets allow advanced analysis be carried out using processing scripts.This results accurate mapping, which makes assess surrounding landscape.In addition, GEE follow spatio-temporal evolution impacts, from immediately after rupture recovery reconstruction stages.Thus, aimed analyze impacts mining approach on platform.In creation mapping methodologies can contribute assessment risks associated with ruptures other regions Brazil world, favoring mitigation impacts.

Language: Английский

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The Risk of Land Degradation in Areas Impacted by Tailings Mudflows: A Legal and Economic Assessment

Land Degradation and Development, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 6, 2024

ABSTRACT Accidents involving tailings dams are threatening because of their potential impacts. In many countries, despite the existence legislation population lives with insecurity dam breaks. Using Minas Gerais state in Brazil as an example, aforementioned applies to hundreds dams, specifically Vargem Grande Vale mining company. The area affected by a failure is set through legal‐administrative instruments called “flood patches.” purpose this study was analyze these patches, using and assess possible land degradation impacts failure, focused on flooded native vegetation. assessment resorted VERA—Economic Valuation Environmental Resources method. results exposed destruction 200 ha Atlantic Forest 55 Cerrado vegetation within flood patches. However, simulated outcomes also reveal significant decline patches short period (from 4.60 km 2 2022 3.05 2023), related dam‐decommissioning risk‐reduction works allegedly implemented or be This reduction can misleading decommissioning issues frequently used companies minimize responsibilities case breakup. It worth mentioning that patch led convenient drop VERA results, from nearly 74 53 million dollars. Therefore, official protocol delineate must improved allow more realistic evaluation. regard, changes overtime better defined legislation, namely inclusion potentially soil‐ water‐bearing ecosystem services. Effective monitoring paramount for true evaluation impacted areas.

Language: Английский

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A framework model to prioritize groundwater management actions based on the concept of dominant risk: an application to the state of Espírito Santo, Brazil

Case Studies in Chemical and Environmental Engineering, Journal Year: 2024, Volume and Issue: unknown, P. 101032 - 101032

Published: Nov. 1, 2024

Language: Английский

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Modeling and predicting caffeine contamination in surface waters using artificial intelligence and standard statistical methods

Environmental Monitoring and Assessment, Journal Year: 2024, Volume and Issue: 197(1)

Published: Dec. 5, 2024

Language: Английский

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Spatial–temporal variations of metals and arsenic in sediments from the Doce River after the Fundão Dam rupture and their bioaccumulation in Corbicula fluminea

Integrated Environmental Assessment and Management, Journal Year: 2023, Volume and Issue: 20(1), P. 87 - 98

Published: April 7, 2023

The rupture of the Fundão dam in Brazil released tons mining tailings into Doce River Basin (DRB). This investigation aimed to determine bioaccumulation metals soft tissues bivalve Corbicula fluminea exposed sediments collected DRB four periods (just after, 1, 3, and 3.5 years after rupture). In exposure bioassays, concentrations Al, As, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Zn were quantified. concentration some elements (As, Al) exceeded federal limits or regional backgrounds at sampling sites, but their tended decrease over time. However, higher many detected winter 2019. Several C. tissues, factors generally low not related those associated with ore tailings, evidencing that bioavailability bivalves, laboratory conditions, was limited. Integr Environ Assess Manag 2024;20:87-98. © 2023 SETAC.

Language: Английский

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