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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Groundwater Quality Monitoring Using In-Situ Measurements and Hybrid Machine Learning with Empirical Bayesian Kriging Interpolation Method

Applied Sciences, Journal Year: 2021, Volume and Issue: 12(1), P. 132 - 132

Published: Dec. 23, 2021

This article discusses the assessment of groundwater quality using a hybrid technique that would aid in convenience (GW) monitoring. Twenty eight (28) GW samples representing 62 barangays Calapan City, Oriental Mindoro, Philippines were analyzed for their physicochemical characteristics and heavy metal (HM) concentrations. The 28 collected at suburban sites identified by coordinates produced Global Positioning System Montana 680. analysis concentrations was conducted onsite portable handheld X-Ray Fluorescence (pXRF) Spectrometry. Hybrid machine learning—geostatistical interpolation (MLGI) method, specific to neural network particle swarm optimization with Empirical Bayesian Kriging (NN-PSO+EBK), employed data integration, spatial Spatial map metals concentration NN-PSO-EBK. Another, spot created observed compared maps. Results showed maps recorded significant results based on its MSEs values such as 1.404 × 10−4, 5.42 10−5, 6.26 3.7 10−6, 4.141 10−4 Ba, Cu, Fe, Mn, Zn, respectively. Also, cross-validation predicted resulted R range within 0.934–0.994 which means almost accurate. Based these results, it can be stated is efficient Utilization this could useful regular

Language: Английский

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Fluid boundaries: A cross-country exploration of groundwater quality amid threats from climate change

Environmental Challenges, Journal Year: 2024, Volume and Issue: 15, P. 100953 - 100953

Published: April 1, 2024

Even though access to improved water supply sources in the world is known have risen this not case least-developed countries (LDCs), where demand exceeds availability of resources several places culminating into stress or scarcity. As if that's enough developmental issues, onset effect climate change pushing these severe and socio-economic crises. Climate has only affected but quality also. The groundwater status some LDCs been reviewed ascertain level vulnerability wake change. Parameters such as pH, TDS, nitrate biological contaminants were used indicators pollution resources. Most deteriorated due both anthropogenic geogenic factors suggested effects will exacerbate situation. paper further discusses frameworks policies that must be put place safeguard integrity for empowerment improvement livelihoods people.

Language: Английский

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The Assessment of Hydrological Availability and the Payment for Ecosystem Services: A Pilot Study in a Brazilian Headwater Catchment

Water, Journal Year: 2020, Volume and Issue: 12(10), P. 2726 - 2726

Published: Sept. 29, 2020

The assessment of water availability in river basins is at the top security agenda. Historically, stream flow discharge Brazilian watersheds was relevant for dam dimensioning, flood control projects and irrigation systems. Nowadays, it plays an important role creation sustainable management plans catchment scale aimed to help establishing legal policies on resources laws, namely, those related payment environmental services clean production. Headwater catchments are preferential targets these laws their quality. general objective this study evaluate first-order sub-basins a headwater catchment. specific objectives were: (1) assess rank them accordingly; (2) analyze feasibility production sub-basins. measurements were conducted during five years (2012 2016), headwaters watershed São Domingos River Turvo/Grande Watershed, represented as 4th-largest hydrographic unit management—UGRHI-15 Paulo State, Brazil. A doppler velocity technology used remotely measure open-channel collect data. values obtained periodic measurements, beginning each month. results subject descriptive statistics that analyzed temporal spatial data morphometric characteristics. flows showed space–time variations magnitude between studied availability, assessed based average net discharges. set ecological processes supported by forests fundamental controlling recharging aquifers preserving volume sub-basin. upstream inflows influence downstream To avoid scarcity, rivers located must not consider basin area single homogeneous unit, because may be source conflicts. Understanding relationship response conservationist practices installed uphill influenced anthropic actions crucial assessment. should considered great potential ecosystem services, with respect “provider-receiver” principle, context payments (PES).

Language: Английский

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Physicochemical, microbiological quality, and risk assessment of water consumed by a quilombola community in midwestern Brazil

Environmental Science and Pollution Research, Journal Year: 2021, Volume and Issue: 28(27), P. 35941 - 35957

Published: March 8, 2021

Language: Английский

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Water-Secure River Basins: A Compromise of Policy, Governance and Management with the Environment

Water, Journal Year: 2022, Volume and Issue: 14(9), P. 1329 - 1329

Published: April 20, 2022

Water-secure basins are a lifesaving goal of society that can be accomplished if political and water authorities, stakeholders, the general public networked committed to effectively improve security, river basin management, resource policies governance [...]

Language: Английский

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Influence of urban streams in the Jatai municipality on water quality of brazil's Claro River: physical-chemical, microbiological, and parasitological analysis

Contribuciones a las Ciencias Sociales, Journal Year: 2023, Volume and Issue: 16(9), P. 14000 - 14019

Published: Sept. 4, 2023

The present work has the objective of evaluating influence urban streams Jatai, on water quality Claro River and to analyze physical-chemical, microbiological, parasitological parameters both rivers’ main affluent streams. study was carried out in perimeter Goias, Brazil, three sources: River, Queixada’s Stream Ribeirao Jatai’s Stream. samples were collected properly sterilized identified flasks, which transported thermal boxes collection sites subsequently forwarded Regional Laboratory Water Quality Control, at Sanitation Goias S/A Clinical Biochemistry Body Fluids Biomedicine Department Federal University Jatai. Most analyzed are within acceptable limits, except for density Escherichia coli BOD. E. point 4 4.3x103 FCU/100 mL 5 1.5x102 mL, BOD resulted 8.71 mg/L. However strains not considered pathogenic humans based molecular detection pathotypes. Furthermore, no parasitic structures by conventional tests, providing good evidence river’s quality, is one that supplies city. With this study, we conclude (downstream Jatai), more polluted compared 1 (amount Queixada's Stream), since it suffers direct interference from especially latter, presented high results contamination total coliforms, example. Based performed analysis presented, can be observed even suffering streams, still free harmful factors microorganisms.

Language: Английский

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Segurança das águas subterrâneas (groundwater security): uma revisão dos estudos nacionais e internacionais

Derbyana, Journal Year: 2024, Volume and Issue: 45

Published: March 8, 2024

A segurança das águas subterrâneas faz parte da hídrica para manutenção do abastecimento e atividades humanas, vital o desenvolvimento de uma região sociedade. O presente trabalho consistiu em revisão bibliográfica estudos relacionados à subterrânea, por meio busca artigos com as palavras-chave “water security” (segurança hídrica), “groundwater” (água subterrânea) “aquifer” (aquífero)” nas bases Scopus, Compedex Web of Science, no período entre 2019 2023. resultou 351 que foram armazenados gerenciador referências Zotero depois analisadas pelo software VOSViewer planilhas eletrônicas. Há produção cerca 70 ano sobre assunto, sendo os temas mais discutidos relativos a balanço hídrico, quantidade qualidade águas, evolução uso ocupação terra regiões semiáridas e/ou populosas. Os países número expressivo trabalhos são China, Índia, Estados Unidos Brasil. África Sul Irã apresentam maior citações, decorrente dos bem conhecidos casos escassez aguda recursos hídricos clima semiárido árido. métodos utilizados hidrológicos (séries temporais chuva vazão), destaque aqueles analisam escoamento básico combinado técnicas sensoriamento remoto. Foram analisados detalhe focam na disponibilidade associada ao aumento demanda causa crescimento populacional, seus impactos. Como tendência recente, verifica-se modelos acoplados visam estimar hídrico área (bacia hidrográfica), simular vazão rios elaborar cenários (tanto otimistas como pessimistas) gerenciamento hídricos. Em relação água, destacam-se índices (diversos métodos) sua cartografação, partir sobreposição áreas vulnerabilidade ouso terra. governança consistem análises socioeconômicas conflitos além indicadores sustentabilidade subsidiar decisões gerenciamento. sistemática literatura revelou Brasil têm acompanhado abordagens modernas vêm empregadas internacionais.

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El acceso y el suministro de agua rural en México y Brasil

Tecnología y Ciencias del Agua, Journal Year: 2024, Volume and Issue: 15(3), P. 349 - 390

Published: April 30, 2024

El objetivo de esta investigación es analizar la literatura sobre el acceso y suministro agua rural en México Brasil considerando los sistemas existentes para proponer recomendaciones mejora estos rubros. Se utilizaron diferentes metodologías revisión literatura, como búsqueda diversas bases datos científicas, empleo del ranking SCIMAGO, adopción escala Newcastle Ottawa, las pautas PRISMA verificación STROBE. Los periodos tiempo abarcaron épocas remotas clave que finalizan actualidad: 1994-2020. resultados destacan naciones latinoamericanas tienen necesitan un mayor compromiso mejorar por parte sector público. recomienda hacer partícipe al social desarrollo esquemas gestión comunitaria encontrar una solución a demanda oferta cambiantes. Además, menester próximas investigaciones profundizar tema abastecimiento su analizadas.

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Análise da Qualidade da Água da Microbacia Hidrográfica do Rio Maguari-Açu, Ananindeua-PA

Revista Brasileira de Geografia Física, Journal Year: 2024, Volume and Issue: 17(2), P. 845 - 859

Published: March 14, 2024

A falta de saneamento básico está diretamente relacionada ao controle da poluição das águas, pois compromete a conservação dos rios urbanos. Nesse sentido, o presente estudo tem por objetivo analisar as características físico-químicas e microbiológicas qualidade água Microbacia Hidrográfica do Rio Maguari-Açu (MHRM) localizada em Ananindeua-PA, dois períodos sazonais distintos ano 2022. Para isso foram realizadas coletas nos meses Setembro Dezembro As feitas seis pontos microbacia, P1, P2, P3, P4, P5 P6. Foram analisados os parâmetros físico-químicos água: pH, Oxigênio Dissolvido (OD), Condutividade Elétrica (CE), Sólidos Totais Dissolvidos (STD), Temperatura, Turbidez Cor verdadeira. Além microbiológicos: Coliformes totais (CT), termotolerantes (CTT) Escherichia coli (E.coli) comparados com legislação CONAMA 357/05 para águas doces classe II. Na análise estatística, foi aplicado teste multivariado. utilização desse permitiu inferir que, no período menos chuvoso, P3 P4 demonstraram maior semelhança entre si estavam mais próximos ponto P5. Esses apresentaram valores elevados CTT baixos OD, estando essas duas variáveis desconformidade legislação. No constatou-se que tinham P6, perímetro urbano, também microbiológicos físico-químicos, evidenciando interferência antrópica na microbacia.

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