Groundwater Geochemistry & RemediationDepartment of Earth Sciences University of Waterloo Acid Mine Drainage Introduction The oxidation of sulfide minerals and consequent release of acid in tailings impoundments can last for decades to centuries. The interaction of the low-pH, metals and sulfate contaminated water with tailings and aquifer minerals initiates a sequence of pH-buffering reactions. This increase in pH is often accompanied by the precipitation of meta ...

Acid Mine Drainage 3/16/98 Click here to start Table of Contents Acid Mine Drainage Mining & the Environment Mine Tailings Acid Mine Drainage Pyrite Oxidation of Pyrite Oxidation of Pyrite AMD in the High Andes, Peru AMD in Colorado “Yellow boy” precipitation smothers aquatic plants and animals PPT Slide Microbial Influences PPT Slide T. ferrooxidans T. ferrooxidans T. ferrooxidans T. ferrooxidans T. ferrooxidans Coal Mining and AMD PPT Slide A Little History A Little History Types of Coal Mines Types of Coal Mines Water Flows Mine Drainage Wasteland Open Mine EntryAuthor: Western Oregon University Email: courtna@wou.edu Download presentation source

AMD Home Introduction APP of Mine Overburden Sample Prep AMD Chemistry Microbial Influences AMD Pictures Wetlands Project Related Links Acid Mine Drainage is a very ubiquitous problem in areas where there has been a history of coal or hard rock mining. Geochemical oxidation of exposed sulfide minerals in mine tailings and waste overburden releases toxic heavy metal ions and acidic hydrogen into surface and ground waters. The water pollution problems that result from acid m ...

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