Study of Generation and Underground Flow of Acid Mine Drainage in Waste Rock Pile in an Uranium Mine Using Electrical Resistivity Tomography

Casagrande, Matheus Felipe Stanfoca; Moreira, César Augusto; Targa, Débora Andrade

doi:10.1007/s00024-019-02351-9

Cited by 27 publications

(19 citation statements)

References 26 publications

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“…Subsequently, the generation of 3D visualization models was made through the use of Oasis Montaj Platform (Geosoft), whose process of interpolation of the previous 2D geophysical products is based on the methods of kriging and minimum curvature, designed to guarantee the smoothing of the central values concerning the limits of the investigated area. The use of this kind of model, frequently applied in mineral prospection researches [62][63][64], makes possible a broad analysis of the hydrogeological conditions of the study area, including the identification of preferential groundwater pathways in the context of fractured and porous aquifer systems and delimitation of contamination plumes during the stages of characterization and monitoring of impacted sites [65][66][67].…”

Section: Methodsmentioning

confidence: 99%

Hydrogelogical characterization of a waste rock pile and bedrock affected by acid mine drainage from geophysical survey

et al. 2020

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Mining activities are known for the profound changes they cause in the environment, especially those related to environmental liabilities generated by these enterprises. One major concern of this sector relies on the acid mine drainage (AMD) process, which is formed by the exposure of sulfide minerals to oxidizing conditions. As a result, the production of low-pH saline waters favors the mobilization of heavy metals to the environment. In the last decades, the characterization and monitoring of contamination plumes have become more feasible due to the application of geophysical tools, more precisely the DC resistivity geophysical method. Thus, the aim of the present study is the application of electrical resistivity tomography to understand the hydrogeological dynamic of a waste rock pile in the Osamu Utsumi uranium mine, with the identification of preferred groundwater and AMD flow. The analysis of the 2D geophysical products allowed the differentiation of high salinity water accumulation zones (< 40 Ω m) in the interior of the pile. Likewise, the evaluation of the pseudo-3D model generated by the interpolation of 2D sections was crucial for the recognition of low resistivity zones within the bedrock, possibly controlled by fractures that work as recharge zones between the waste rock pile and the fractured aquifer. The identification of discharge and recharge zones related to the fractures system is a fundamental step for planning and actions to prevent water-sulfides interaction process, which is responsible for the generation of AMD, and also the installation of groundwater pumping systems.

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Section: Methodsmentioning

confidence: 99%

Hydrogelogical characterization of a waste rock pile and bedrock affected by acid mine drainage from geophysical survey

et al. 2020

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“… 74 US EPA set the acceptable limitation of <30 ppb for uranium levels in drinking water. 75 Thus, it is vital to remove U(VI) ions to ensure environmental safety. Recent progress regarding the adsorption of U(VI) on COFs and derivates is summarized in the succeeding subsections.…”

Section: Removal Of Radionuclides By Cof-based Materialsmentioning

confidence: 99%

“…These advantages, together with the characteristics of predesigned structure, ordered porous structure, and adjustable physicochemical properties, make COFs promising next-generation materials with remarkable high sorption capacities for radioactive/toxic metal ions and organic contaminants. 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 , 97 , 98 , 99 , 100 , 101 , 102 , 103 , 104 , 105 , 106 , 107 , 108 , 109 , 110 , 111 , 112 …”

Section: Introductionmentioning

confidence: 99%

Orderly Porous Covalent Organic Frameworks-based Materials: Superior Adsorbents for Pollutants Removal from Aqueous Solutions

et al. 2021

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Summary Covalent organic frameworks (COFs) are a new type of crystalline porous polymers known for chemical stability, excellent structural regularity, robust framework, and inherent porosity, making them promising materials for capturing various types of pollutants from aqueous solutions. This review thoroughly presents the recent progress and advances of COFs and COF-based materials as superior adsorbents for the efficient removal of toxic heavy metal ions, radionuclides, and organic pollutants. Information about the interaction mechanisms between various pollutants and COF-based materials are summarized from the macroscopic and microscopic standpoints, including batch experiments, theoretical calculations, and advanced spectroscopy analysis. The adsorption properties of various COF-based materials are assessed and compared with other widely used adsorbents. Several commonly used strategies to enhance COF-based materials’ adsorption performance and the relationship between structural property and sorption ability are also discussed. Finally, a summary and perspective on the opportunities and challenges of COFs and COF-based materials are proposed to provide some inspiring information on designing and fabricating COFs and COF-based materials for environmental pollution management.

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“…BF-04 was built according to the end-dumping method and disposed on the top of a fractured aquifer system. Local potassic rocks, clay and blocks provided by uranium explorations composes the waste rock pile, the main mineralogical composition consists of K-feldspar (50%), Kaolinite (20%), Muscovite (20%) and Pirite (2%), between others (Franklin, 2007;Casagrande et al, 2020).…”

Section: Uranium Deposit Genesis and Waste Rock Pile Bf-04 Compositionmentioning

confidence: 99%

Gamma-ray spectrometry applied in the identification of potential acid mine drainage generation zones in waste rock pile with uranium ore and associated sulfides (caldas, Brazil)

Moreira

Marques

2022

Geofis Int

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Metal mining deeply modifies local environmental dynamics and produces large volumes of waste rock and residues, which is expected to be carefully disposed in order to prevent soil, water, and environment degradation. The Osamu Utsumi mine was a pioneer uranium ore exploitation site in Brazil, located in the State of Minas Gerais. The open pit and the high concentration of sulfide in waste rock piles are nowadays a dispendious concern to the Nuclear Industries of Brazil (INB, in Portuguese), due to sulfide oxidation and the resultant acid mine drainage (AMD). The objective of this research is to analyze the correlation between gamma-ray spectrometry data and the genera- tion of AMD in a waste rock pile, locally known as BF-04. Potassium concentrations can be used to distinguish zones of rock depletion, lowest concentrations, and radioelement sedimentation. The radiometric data acquisition combined with previous studies indicates that high uranium and tho- rium concentrations are associated with high sulfide zones. The mineralized uranium ore includes sulfides that are rapidly destroyed by surface hydration conditions, responsible for generating acid mine drainage. In this sense, superficial zones in the waste rock pile with high levels of eU and eTh are areas exposed to oxidation and hydration of sulfides, and, therefore, their recognition and neutralization can contribute to decrease AMD generation in the study site and areas with similar characteristics. The gamma-ray spectrometry results can subsidize more effective and low-cost reme- diation techniques.

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Study of Generation and Underground Flow of Acid Mine Drainage in Waste Rock Pile in an Uranium Mine Using Electrical Resistivity Tomography

Cited by 27 publications

References 26 publications

Hydrogelogical characterization of a waste rock pile and bedrock affected by acid mine drainage from geophysical survey

Hydrogelogical characterization of a waste rock pile and bedrock affected by acid mine drainage from geophysical survey

Orderly Porous Covalent Organic Frameworks-based Materials: Superior Adsorbents for Pollutants Removal from Aqueous Solutions

Gamma-ray spectrometry applied in the identification of potential acid mine drainage generation zones in waste rock pile with uranium ore and associated sulfides (caldas, Brazil)

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