pyrite oxidation sharghi
(PDF) Environmental Problems Related to Pyrite Oxidation ...
Much research has been carried out to investigate pyrite oxidation, AMD generation and the related environmental impact of the coal waste piles
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A statistical model to relate pyrite oxidation and oxygen ...
2013-10-18 · Sadeghiamirshahidi et al. predicted the pyrite oxidation in the Alborz Sharghi coal washing waste pile using the artificial neural networks. In their research, four factors were considered to predict the pyrite oxidation. These include annual precipitation, effective diffusion coefficient, initial pyrite fraction, and the pile depth.
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Prediction of Pyrite Oxidation in a Coal Washing Waste ...
2013-11-19 · Two models were evaluated as alternative methods for predicting pyrite oxidation in the Alborz Sharghi coal washing waste pile (in northeastern Iran). The first model applies a ‘feed-forward artificial neural network (ANN) with 4-7-1 structure’. The model uses depth, initial remaining pyrite fraction, mole fraction of oxygen, and annual precipitation as input parameters
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(PDF) Prediction of Pyrite Oxidation in a Coal Washing ...
Two models were evaluated as alternative methods for predicting pyrite oxidation in the Alborz Sharghi coal washing waste pile (in northeastern Iran). The first model applies a 'feed-forward ...
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(PDF) Integrated Time-Lapse Geoelectrical–Geochemical ...
Geochemical and geoelectrical methods were used to investigate pyrite oxidation at a coal waste pile at Alborz Sharghi, in northeastern Iran. The geochemical studies
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Application of Image Processing for Modelling Pyrite ...
In this paper, an image processing method was applied to model the pyrite oxidation in the wastes of the Alborz Sharghi coal washing plant waste pile, northeast Iran.
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Application of artificial neural networks to predict ...
2013-2-1 · This paper presents a neural network model to predict the pyrite oxidation in the spoil of the Alborz Sharghi coal washing refuse pile, northeast Iran. Spoil depth, annual precipitation, effective diffusion coefficient and initial amount of pyrite in
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Application of Image Processing for Modelling Pyrite ...
2012-11-22 · Hence, pyrite content and its oxidation within the waste particles of the Alborz Sharghi coal washing waste pile were investigated. The most widely used method for measuring the amounts of different types of sulphur presented by the ASTM is a cumbersome method with a difficult preparation process.
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Environmental Problems Related to Pyrite Oxidation
2008-10-29 · the pyrite oxidation process will continue to release acid and elevated concentrations of heavy metals and sulphate to the surface and groundwater flow systems for many more decades. Key words: pyrite oxidation, acid mine drainage, coal washing plant, coal waste dump, Alborz-Sharghi, heavy metals Introduction
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Predicting pyrite oxidation and multi-component reactive ...
2016-7-1 · In this paper, pyrite oxidation process resulted from an abandoned coal waste pile in northeastern Iran was evaluated by a combination of three-dimensional (3D) geo-electrical data inversion and two-dimensional (2D) numerical modeling of long-term pyrite oxidation and multi-component reactive transportation of the oxidation products.
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(PDF) Environmental Problems Related to Pyrite Oxidation ...
Much research has been carried out to investigate pyrite oxidation, AMD generation and the related environmental impact of the coal waste piles
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(PDF) Investigating the Pyrite oxidation and mineralogical ...
K ey Wor ds Pyrite oxidation, Acid mine drainage, Mineralogical characterizing, Coal washing waste dump, Alborz Sharghi Proceedings_Theme_07_part4_Proceedings IMWA 2011 22/08/2011 1:32 AM Page 447
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(PDF) Geochemical characterisation of pyrite oxidation and ...
Pyrite oxidation and release of the oxidation products from a low-grade coal waste dump to stream, groundwater and soil was investigated by geochemical and hydrogeochemical techniques at Alborz Sharghi coal washing plant, Shahrood, northeast Iran.
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(PDF) A statistical model to relate pyrite oxidation and ...
A statistical model to relate pyrite oxidation and oxygen transport within a coal waste pile: Case study, Alborz Sharghi, northeast of Iran June 2013 Environmental Earth Sciences 71(11)
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Geochemical characterisation of pyrite oxidation and ...
2011-2-26 · Pyrite oxidation and release of the oxidation products from a low-grade coal waste dump to stream, groundwater and soil was investigated by geochemical and hydrogeochemical techniques at Alborz Sharghi coal washing plant, Shahrood, northeast Iran. Hydrogeochemical analysis of water samples indicates that the metal concentrations in the stream waters were
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Application of Image Processing for Modelling Pyrite ...
2012-11-22 · In this paper, an image processing method was applied to model the pyrite oxidation in the wastes of the Alborz Sharghi coal washing plant waste pile, northeast Iran. Pictures of polished sections created from the powdered samples of coal wastes were used to determine the amount of pyrite that remained at different depths of the waste pile. The amount of pyrite in the
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A combined mathematical geophysical model for
numerical finite volume model using Phoenics package has been developed to simulate pyrite oxidation and pollution generation from the Alborz Sharghi coal washing waste dump. The pyrite oxidation reaction is described by the shrinking-core model. Gaseous diffusion is the main mechanism for the transport of oxygen through the waste. The
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Predicting pyrite oxidation and multi-component reactive ...
2016-7-1 · In this paper, pyrite oxidation process resulted from an abandoned coal waste pile in northeastern Iran was evaluated by a combination of three-dimensional (3D) geo-electrical data inversion and two-dimensional (2D) numerical modeling of long-term pyrite oxidation and multi-component reactive transportation of the oxidation products.
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A model of long-term oxidation and leaching processes in ...
2016-4-27 · This study presents a numerical model to simulate a long-term pyrite oxidation process and subsequent multi-component reactive transportation of the oxidation productions in an abandoned coal waste pile in Northeast of Iran. For this purpose, 240 solid samples of wastes were obtained from different depths of 10 vertical trenches excavated in the pile. Then,
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SplitPDF - AUT
2021-11-21 · Rapid oxidation of pyrite in the presence of oxygen and moisture produces acid mine drainage. Such acidic drainages cause surface and groundwater pollution. In this study, a very low frequency (VLF) electromagnetic method was used to investigate the likely polluted zones due to leaching from the Alborz Sharghi coal washing waste dump.
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Predicting pyrite oxidation and multi-component reactive ...
2016-7-1 · In this paper, pyrite oxidation process resulted from an abandoned coal waste pile in northeastern Iran was evaluated by a combination of three-dimensional (3D) geo-electrical data inversion and two-dimensional (2D) numerical modeling of long-term pyrite oxidation and multi-component reactive transportation of the oxidation products.
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Prediction of Acid Mine Drainage Generation Potential of
A statistical model to relate pyrite oxidation and oxygen transport within a coal waste pile: case study, Alborz Sharghi, northeast of Iran. Environmental Earth sciences. 71 (11): 4693-4702. [15].
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[PDF] Methods for sampling and inorganic analysis of coal ...
Pyrite oxidation and mineralogical characteristics of a coal washing waste dump , Albourz Sharghi , Shahrood , Iran Mohammad Hossein Sadeghi Amirshahidi , T. Kish ,
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University of Tehran | School of Mining,College of ...
In this paper, an image processing method was applied to model the pyrite oxidation in the wastes of the Alborz Sharghi coal washing plant waste pile, northeast Iran. Pictures of polished sections created from the powdered samples of coal wastes were used to determine the amount of pyrite that remained at different depths of the waste pile.
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alborz sharghi coal washing plant
Environmental Problems Related to Pyrite Oxidation from an . The coal produced by these mines is washed in Alborz Sharghi coal washing plant in order to raise its quality and remove any impurity The wastes produced by washing process are dumped in the
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EJ (Editors) xv
Investigation of contaminated plumes caused by pyrite oxidation from a coal refuse pile at the Alborz Sharghi coal washing plant using VLF geophysical method Musyoka, Nicholas Mulei; Petrik, Leslie F.; Hums, Eric Ultrasonic assisted synthesis of zeolite A from coal fly ash using mine waters (acid mine
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Mine water - managing the challenges : proceedings of
2012-6-14 · Pyriteoxidationinthe Sarcheshmehcopperminetailings dam,Kerman,Iran 59 Vasileiou,Eleni; Koumantakis, loannis The exploitation of lignite deposits inrelationwiththe surfaceand groundwater inthe
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Detecting the Source of Contaminant Zones Down
Environmental contamination from the Alborz Sharghi coal washing plant in northeast Iran was evaluated with geo-electrical techniques. The internal structure of a coal waste pile was first studied using one dimensional geo-electrical techniques, including a Schlumberger array. The oxidised zone had low resistivity while the unoxidised shallower and middle to deeper levels
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Proceedings 2011 - mwenfo
2022-1-24 · Moradzadeh, Ali; Amirkhani, Farzin; Doulati Ardejani, Faramarz; Arab-Amiri, Ali Reza (2011): Investigation of contaminated plumes caused by pyrite oxidation from a coal refuse pile at the Alborz Sharghi coal washing plant using VLF geophysical method. – In: Rüde, R. T., Freund, A. & Wolkersdorfer, Ch.: Mine Water – Managing the Challenges.
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The Flotation System Optimization in Alborz-Sharghi Coal ...
The Flotation System Optimization in Alborz-Sharghi Coal Washing Plant; A Laboratory Study International Journal of Mining and Geo-Engineering مقاله 2، دوره 49، شماره 1، تابستان 2015 ، صفحه 19-32 اصل مقاله (1.33 MB) نوع مقاله: Research Paper شناسه دیجیتال ...
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