Mine Water
Mostrando 1-12 de 54 artigos, teses e dissertações.
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1. Using static, kinetic and metal mobility procedures to evaluate possibilities of coal waste land disposal at Moatize Mine, Mozambique
Abstract Coal mine waste rocks produced during mining and beneficiation can affect the environment due to land degradation and acid mine drainage generation. However, proper characterization and treatment of mineral processing wastes creates options for safe disposal, enhancing the environmental performance. The aim of this study was to use static and kineti
REM, Int. Eng. J.. Publicado em: 2020-12
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2. Influence of water level in mine sequencing applied to strategic mining planning
Abstract Developing mine sequencing involves a number of factors and a large amount of information, and consequently the profitability of the project will strongly depend on the production schedule. A mining project may be conditioned to non-optimal sequencing, which may affect the economic results of the project and also lead to an inadequate utilization of
REM, Int. Eng. J.. Publicado em: 2020-06
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3. Pyrite utilization in the carboniferous region of Santa Catarina, Brazil - Potentials, challenges, and environmental advantages
Abstract The main coal seams explored in the coal region of Santa Catarina are Barro Branco (BB) and Bonito (BO). Owing to the association with the mineral matter, the tailings generated in the beneficiation are arranged in disposal areas, and subject to the generation of acid mine drainage (AMD). The objective of this study was to evaluate the use of pyrite
REM, Int. Eng. J.. Publicado em: 19/06/2019
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4. Effectiveness of Arsenic Co-Precipitation with Fe-Al Hydroxides for Treatment of Contaminated Water
ABSTRACT Wastewater treatment is a challenging problem faced by the mining industry, especially when mine effluents include acid mine drainage with elevated arsenic levels. Iron (hydr)oxides are known to be effective in removal of As from wastewater, and although the resulting compounds are relatively unstable, the presence of structural Al enhances their st
Rev. Bras. Ciênc. Solo. Publicado em: 29/03/2018
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5. The effect of metyrosine on oxidative gastric damage induced by ischemia/reperfusion in rats. Biochemical and histopathological evaluation
Abstract Purpose: To investigate the effect of metyrosine against I/R induced gastric damage in rats. Methods: Eighteen albino Wistar male rats were divided into groups; gastric I/R (GIR), 50 mg/kg metyrosine+gastric I/R (MGIR), and sham (SG) groups. 50 mg/kg metyrosine was given to the MGIR group, and distilled water was given to the GIR and SG groups b
Acta Cir. Bras.. Publicado em: 2018-03
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6. ADSORPTION OF MANGANESE FROM ACID MINE DRAINAGE EFFLUENTS USING BONE CHAR: CONTINUOUS FIXED BED COLUMN AND BATCH DESORPTION STUDIES
AbstractIn the present study, continuous fixed bed column runs were carried out in an attempt to evaluate the feasibility of using bone char for the removal of manganese from acid mine drainage (AMD). Tests using a laboratory solution of pure manganese at typical concentration levels were also performed for comparison purposes. The following operating variab
Braz. J. Chem. Eng.. Publicado em: 2015-06
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7. Modelamento numÃrico do fluxo subterrÃneo atual e simulaÃÃes de cenÃrios futuros da mina de Morro Agudo, Paracatu-MG. / NUMERICAL MODELING OF UNDERGROUND FLOW AND SIMULATIONS OF FUTURE PUMPING SCENARIOS OF MORRO AGUDOÂS MINE, PARACATU-MG
The numerical modeling of underground flow of Morro Agudos mine, property of Votorantim Metais Zinco (VMZ), Paracatu-MG, used data from hydrometeorological monitoring campaigns to calibrate the actual scenario and simulate future pumping scenarios of this mine, using Visual MODFLOW 3.1 software. The study area is located in Paracatu-MG and in external port
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/08/2012
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8. Remoção do Manganês e do Sulfato de Água de Mina / Remoção do Manganês e do Sulfato de Água de Mina
As remoções de manganês e de sulfato são importantes desafios no tratamento de águas de mina. O manganês é de difícil remoção devido a sua alta solubilidade em meio ácido ou neutro e pode ser encontrado em altas concentrações nessas águas, conforme a mineralogia das rochas. Por outro lado, a presença de íons sulfato é normalmente devida à o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/02/2012
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9. Susceptibility to DNA damage in workers occupationally exposed to pesticides, to tannery chemicals and to coal dust during mining
Our mutagenesis group has been studying with important economic drivers of our state, such as agriculture, the footwear and leather industry and open-cast coal mining. Working conditions in these sectors have potentially harmful to humans. The aim of these studies is to determine the health risk of workers by biomonitoring subjects exposed to genotoxic agent
Genet. Mol. Biol.. Publicado em: 2012
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10. Methodology for the Design of Cover Systems Based on the Case Study Conducted at Site Rio Paracatu Mineração (RPM) in Paracatu, Minas Gerais / Metodologia para Dimensionamento de Sistemas de Cobertura com Base em Estudo de Caso Realizado na Mina da Empresa Rio Paracatu Mineração (RPM) em Paracatu, Minas Gerais
Nearly four years ago, two experimental cover systems of the evapotranspirative type, have been designed and built in Rio Paracatu Mineração (RPM), Paracatu, Minas Gerais (Amorim, 2008). One cover system was made with a hydraulic barrier layer and the other with a capillary barrier layer, both with monitoring systems consisting of a runoff meter, lysimeter
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/01/2011
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11. Modelling of acid mine drainage (AMD) in columns
A model is proposed in this paper to describe the generation of acid mine drainage (AMD) in leaching columns. The model considers: (i) Water flow through the column, which is calculated using the 1 - D analytic solution of the Richards' equation assuming the existence of a similarity relationship between the water retention function and the water content pro
Brazilian Journal of Chemical Engineering. Publicado em: 2011-09
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12. Estimativa simultânea de parâmetros hidráulicos e de transporte em estéreis de mineração de urânio / Simultaneous estimation of hydraulic and transport parameters inwaste rock from uranium mining
The present work aims to simultaneously estimate the hydraulic and transport parameters related to the material of one of the waste rock piles (Waste Rock Pile 4) from the Poços de Caldas uranium mining and milling facility. Before performing the estimation, it was necessary to study the chemical species that are dissolved from this material by the climate
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/06/2010