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  • What can be done to prevent or clean up acid mine

    Water flowing through active or abandoned mine sites can become polluted by the material being mined[1]. By far the most common mine drainage problem is that of acid mine drainage (AMD). Sulfuric acid is produced when water interacts with sulfur-bearing materials in the presence of oxygen and common bacteria[1]. The acidic water formed by this process can dissolve many metals

  • Acid Mine Drainage Prevention and Control Options

    Acid mine drainage (AMD) is one of most significant environmental challenges facing the mining industry worldwide. It occurs as a result of natural oxidation of sulphide minerals contained in mining wastes at operating and closed/decommissioned mine sites. AMD may adversely impact the surface water and groundwater quality and land use due to its typical low pH, high acidity and elevated ...

  • how to prevent mine drainage - thebushlodge.co.za

    While acid mine drainage can be controlled (treated) during active underground mining, in most cases where the mine is above drainage and the water within the mine has free drainage, inadequate technology is available to close the mine to prevent acid mine discharges for extended periods of time (in excess of 100 years).

  • Techniques to correct and prevent acid mine drainage: A

    Techniques to correct and prevent acid mine drainage: A review. Técnicas correctoras y preventivas de las aguas ácidas de mina: Una revisión . Santiago Pozo-Antonio a, Iván Puente-Luna b, Susana Lagüela-López c María Veiga-Ríos d . a Departamento de Ingeniería de los Recursos Naturales y Medio Ambiente, Universidad de Vigo, España. [email protected] b Departamento de Ingeniería de ...

  • Techniques to correct and prevent acid mine drainage: A ...

    Request PDF Techniques to correct and prevent acid mine drainage: A review Acid mine drainage (AMD) from mining wastes is one of the current environmental problems in the field of mining ...

  • Acid mine drainage - Wikipedia

    Acid mine drainage, acid and metalliferous drainage (AMD), or acid rock drainage (ARD) is the outflow of acidic water from metal mines or coal mines.. Acid rock drainage occurs naturally within some environments as part of the rock weathering process but is exacerbated by large-scale earth disturbances characteristic of mining and other large construction activities, usually within rocks ...

  • Acid Mine Drainage - groundtruthtrekking.org

    SummaryGeology and ChemistryEnvironmental ImpactsEconomicsPrevention and Mitigationin AlaskaAcid mine drainage (AMD) refers to the outflow of acidic water from a mining site. In most cases, this acid comes primarily from oxidation of iron sulfide (FeS2, also known as pyrite or \"fool's gold\"), which is often found in conjunction with valuable metals. Acid mine drainage is a major problem with many hardrock mines, including almost all mines where the metal ore is bound up with sulfur (metal sulfide mines). A significant number of coal mines also suffer from acid mine drainage.The meta...
  • Permanent solution to acid mine drainage in sight ...

    R600 million per annum has been committed to creating a permanent solution to acid mine drainage that will also produce potable water. The purpose of the long-term solution is to further treat the water by removing the sulphates and creating water for commercial use as either industrial or potable water.

  • Constructed Wetlands for Treating Acid Mine Drainage

    Constructed Wetlands for Treating Acid Mine Drainage. By Kathryn Smith . Introduction . The mining industry has felt the burden of both negative environmental criticism and strong governmental regulations. In the past, mineral extraction and processing has been a source of many contaminants entering our water, soil, and air. They have also been responsible for many vast lands of infertile and ...

  • Acid mine drainage: Prevention, treatment options, and ...

    Acid mine drainage poses severe environmental pollution problems due to its high acidity, toxic metals and sulphate contents. In this review, the available prevention of acid mine drainage generation, treatment options and their importance in light of the future perspectives are briefly discussed. The possible resources to be recovered such as ...

  • Wetland Use in Acid Mine Drainage Remediation

    Wetland Use in Acid Mine Drainage Remediation Steven White ABSTRACT There are estimates that 557,000 abandoned mines exist in the U.S. (Costello 2003), mostly coal mines in the western portion of the country. Many of these mines have no wastewater control features and become flooded over time. The ensuing highly acidic (pH~3) wastewater is laden with toxic heavy metals (Gibert et al. 2004 ...

  • How can acid mine drainage be treated?

    Treatment of AMD: Acid mine drainage sometimes forms when certain minerals in the soil and rocks around mines are exposed to weathering processes during mining.These exposed minerals release their contents into creeks causing them to become acidic. This kind of pollution damages aquatic life and makes the water useless or harmful for others who depend on it for recreation or drinking water.

  • A review of recent strategies for acid mine drainage ...

    Acid mine/rock drainage (AMD/ARD), effluents with low pH and high concentrations of hazardous and toxic elements generated when sulfide-rich wastes are exposed to the environment, is considered as a serious environmental problem encountered by the mining and

  • Preventing acid mine drainage from mine tailings

    organic compound host of oxygen consumer microorganisms, in preventing and reducingAMD. Keywords: Acid Mine Drainage, tailings, sulphide ores, soils and groundwater contamination,heavy metals, leachate. 1 Introduction 1.1 Sulphide mine waste and tailings It is known that mining industry causes negative impacts in its surrounding area.

  • Prevention of Acid Mine Drainage Generation from Open-pit ...

    Prevention of Acid Mine Drainage Generation from Open-pit Highwalls—Final Report Mine Waste Technology Program Activity III, Project 26 by: A. Lynn McCloskey MSE Technology Applications, Inc. Mike Mansfi eld Advanced Technology Center Butte, Montana 59702 Contract No. DE-AC09-96EW96405 Through EPA IAG No. DW89938870-01-1 Diana Bless, Project Offi cer U.S.

  • Development Of Co-Disposal Methods For Fine Coal Waste and ...

    the Prevention of Acid Mine Drainage Donald Mjonono, Sue T.L Harrison, Athanasios Kotsiopoulos Centre for Bioprocess Engineering Research (CeBER), Department of Chemical Engineering, University of Cape Town, Rondebosch 7701, Cape Town, South Africa Abstract Co-disposal of coal waste rock (WR) and ˚ ne coal waste (FW) o˙ ers the potential to mitigate the generation of acid mine drainage.

  • PREVENTION OF ACID MINE DRAINAGE BY ALKALINE ADDITION

    methods which prevent the formation of acid mine drainage would be preferable. Recent studies with Appalachian coal refuse types have indicated that certain types of alkaline amendments have the potential to prevent acid mine drainage from pyritic coal refuse. This paper discusses a research project in which kiln dust, Fluidized Bed Combustion

  • PREVENTION OF ACID MINE DRAINAGE BY ALKALINE ADDITION

    methods which prevent the formation of acid mine drainage would be preferable. Recent studies with Appalachian coal refuse types have indicated that certain types of alkaline amendments have the potential to prevent acid mine drainage from pyritic coal refuse. This paper discusses a research project in which kiln dust, Fluidized Bed Combustion

  • An Explanation of Acid Mine Drainage - ThoughtCo

    In a nutshell, acid mine drainage is a form of water pollution that happens when rain, runoff, or streams come in contact with rock that is rich in sulfur. As a result, the water becomes very acidic and damages downstream aquatic ecosystems. In some regions, it is the most common form of

  • How do I prevent flooding from my neighbors runoff?

    09.01.2014  Installing an NDS drainage system such as Flo-Well and EZ-Drain can prevent neighbor runoff from damaging your property by capturing and retaining excess surface water before allowing it

  • 作者: NDS Stormwater Management
  • (PDF) Preventing acid mine drainage from mine tailings

    Acid mine drainage (AMD) causes environmental pollution that affects many countries having historic or current mining industries. Preventing the formation or the migration of AMD from its source ...

  • Prevention of Acid Mine Drainage (AMD ... - Kyushu

    Acid Mine Drainage (AMD) is one of the environmental problems caused in mining operation. The exposure of sulfide minerals in rocks to water and oxygen in the excavation process leads to AMD. The cover system has been constructed to prevent AMD in many cases in Indonesia for the availability and low-cost maintenance. Waste rocks are classified into Potentially Acid Forming (PAF), which is ...

  • Acid mine drainage NetRegs Environmental guidance

    Prevent water pollution: manage acidic water from mining sites. If you excavate coal, metal ores or other minerals, you may expose rocks and minerals that contain sulphur. If sulphur mixes with water and oxygen it can cause groundwater to become acidic. This is called acid mine drainage (AMD). AMD can contain highly polluting substances such as lead, zinc, iron, mercury and cadmium. It often ...

  • Acid mine drainage - LinkedIn SlideShare

    Acid mine drainage treatment, East Rand, South Africa AMD waters in the Rio Tinto, Spain 3. Introduction: • Acid Mine Drainage to the flow of water out of a mine that has a very high acidic(low pH) after being in contact with air and metal. • It results from the oxidation of sulfide minerals inherent in some ore bodies and the surrounding ...

  • to prevent mine drainage - nivelles-swimming-team.be

    Dec 17, 2016 Acid Mine Drainage: Prevention is the Key. Acid Mine Drainage is a watershed issue of importance to the full range of public stakeholders. To begin to address the very real problems posed by AMD, the government must: prevent future loss of aquatic habitat to Acid Mine Drainage, inventory and cleanup existing acid generating mine ...

  • Treating Acid Mine Drainage From Abandoned Mines in Remote ...

    Drainage From Abandoned Mines in Remote Areas John J. Metesh Hydrogeologist Terrie Jarrell Project Leader Steve Oravetz Program Leader USDA Forest Service Technology and Development Program Missoula, Montana 7E72G71— Acid Mine Drainage Study October 1998 United States Department of Agriculture Forest Service Technology Development Program 7100 Engineering October 1998 9871

  • South Africa acts on acid mine drainage

    Acid mine drainage (AMD) occurs when old mine shafts and tunnels fill up, leading to underground water oxidising with the sulphide mineral iron pyrite, otherwise known as “fool’s gold”. The acid water is believed to be currently about 600m below surface of Johannesburg and surrounding areas, but is rising at an estimated rate of between 0.6 and 0.9 metres a day.

  • The acid mine drainage solution bandwagon - The Mail ...

    With acid mine drainage (AMD) threatening some of South Africa’s major cities, waterways and industries, South African technology providers are getting on the solutions bandwagon in the hopes of ...

  • Leadville mining district - Wikipedia

    The Leadville mining district, located in the Colorado Mineral Belt, ... Cleanups by the potentially responsible parties have involved drainage controls to prevent acid mine runoff, consolidation and capping of mine piles, cleanup of residential properties and reuse of slag. As of September 2011, most of the cleanup had been completed so current risk of exposure is low, although pregnant women ...

  • Effective Treatment Options for Acid Mine Drainage in the ...

    EFFECTIVE TREATMENT OPTIONS FOR ACID MINE DRAINAGE IN THE COAL REGION OF WEST VIRGINIA A Thesis submitted to the Graduate College of Marshall University In partial fulfillment of the requirements for the degree of Master of Science in Geography by Daniel Kirby Dr. Anita Walz, Committee Chairperson Dr. Godwin Djietror Dr. Kevin Law

  • Construction of Dry Cover System for Prevention of Acid ...

    Acid Mine Drainage (AMD) which occurs when sulfide minerals are exposed to water and oxygen with an excavation is one of the serious environmental problems in the world. A dry cover system is generally constructed in waste dump for the prevention of AMD in Indonesia by virtue of low cost and availability of waste rocks for a cover layer.

  • A laboratory study of covers made of low-sulphide tailings ...

    A laboratory study of covers made of low-sulphide tailings to prevent acid mine drainage. B. Bussière 1, M. Benzaazoua 1, M. Aubertin 2 M. Mbonimpa 2 Environmental Geology volume 45, pages 609 – 622 (2004)Cite this article. 487 Accesses. 55 Citations. Abstract. Covers with capillary barrier effects (CCBE) are considered to be one of the most effective ways to control acid mine drainage ...

  • How does mine drainage occur? - USGS

    Mine drainage is formed when pyrite (an iron sulfide) is exposed and reacts with air and water to form sulfuric acid and dissolved iron. Some or all of this iron can precipitate to form the red, orange, or yellow sediments in the bottom of streams containing mine drainage. The acid runoff further dissolves heavy metals such as copper, lead, and mercury into groundwater or

  • Acid Mine Drainage - Earthworks

    Acid mine drainage is especially harmful because it can occur indefinitely — long after mining has ended. A literature review on acid mine drainage concluded that “no hard rock surface mines exist today that can demonstrate that acid mine drainage can be stopped once it occurs on a large scale.”

  • All that glitters... Acid mine drainage: The toxic legacy ...

    A bigger problem than the acid mine drainage from the tailings piles at the surface, however, is the acid filling the underground mines. When mine operations are active, pumping is required to prevent mines from flooding. However, as gold has become depleted or economically unviable to recover, mining companies have abandoned the mines and shut ...

  • Constructed Wetlands May Be Key To Tackling Acid

    It’s been a long, expensive process for the state to clean up the acid mine drainage. But state environmental officials now say an alternative method of remediation -- constructed wetlands ...

  • Acid Mine Drainage Solutions for the Mineral Industry

    Since acid mine drainage comes from abandoned mines these sites are often in mountainous, uninhabited areas where access to the site may be difficult. Many systems have been built with ease of operation being paramount. In fact, the systems are often built for operation with no onsite operator. This has led to the use of caustic for neutralization. Caustic is a liquid and is much easier to ...

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