Flow schemes of sulfate-reducing applications with (A) the Kennecott process scheme and (B) process scheme for selective metal recovery. About half again of what was originally left in the mine can be recovered by this very hazardous mining technique. Subbituminous is next in rank being composed of 0.6 wt.% sulfur, 25% moisture, 35% volatile matter, 35–45% fixed carbon, and about 7% ash and has a heating value at about 8250 BTU/lb. Silver, gold, copper, zinc, … 6A). Acid mine drainage (AMD), a waste from mining sites is highly acidic, rich source of sulfate and heavy metals. A process that occurs when water accumulates on the surface of coal, forming a film. Acid mine drainage (AMD), which can have pH values as low as –3.6 (Nordstrom et al., 2000), can contain high concentrations of many solutes, including iron and arsenic (see Chapter 11.5). The highest reported arsenic concentration, 850 000 μg l−1, was found in an acid seep in Richmond mine, California (Nordstrom and Alpers, 1999). On the other hand, passive treatment methods have the main advantages of low construction costs, easy operation, and maintenance. Mine drainage can be high-quality similar to natural waters or contaminated by leftover materials. We use cookies to help provide and enhance our service and tailor content and ads. Acid mine drainage (AMD) is the runoff produced when water comes in contact with exposed rocks containing sulfur-bearing minerals that react with water and air to form sulfuric acid and dissolved iron. Many mine sites around the world have issues with acid mine drainage, a particularly toxic and corrosive type of mining wastewater. Eine Nutzung als Trinkwasserreservoir oder für Freizeitaktivitäten ist nur nach aufwändiger Wasseraufbereitung möglich. Many such waters are associated with mining, and mines tend to be located where treatment systems requiring operating expertise or maintenance is quite challenging, so a passive wetland system meets requirements related to remote locations. Additional materials for this lesson can be found in our google drive folder at https://goo.gl/ub2ZAJ . Still the other treatments mentioned here are showing progress and with further research and performance analysis these technologies may become more widely used in … Acid Mine Drainage: Entwicklung einer Erweiterung (VBA) des ESRI ArcGIS Desktops zur Simulation von Acid Mine Drainage (AMD), basierend auf drei [...] unterschiedlichen Lysimeterversuchen (MAPLE - Mine Acid Production Longterm Estimation - Tool). This acidic run-off dissolves heavy metals including copper, lead, and mercury which pollute ground and surface water. A facility where the coal coming from a mine is processed or cleaned in order to enhance its properties to be made more suitable for its ultimate use. Acid mine drainage is the main cause of polluted water in the United States with devastating effects on biological activity in many streams. In den rheinischen Braunkohlerevieren wird durch Beimischung von Kalkstein in den pyrithaltigen Abraum der Pyritverwitterung vorgebeugt. This oxidation process occurs slowly in all soils. Sie schädigen die Umwelt durch Kontamination mit Metallen und Halbmetallen einerseits sowie durch Säuerung, Bauwerke und Geräte durch Korrosionswirkung der Säure andererseits. • Iron sulfide minerals, especially pyrite (FeS2), chalcopyrite (FeS.CuS) and also pyrrhotine(FeS) contribute the most to formation of Acid Mine Drainage. AMD is caused when water flows over or through sulfur-bearing materials forming solutions of net acidity. This acid can dissolve other harmful metals and metalloids (like arsenic) from the surrounding rock. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. Water Conservation and Wastewater Treatment in BRICS Nations, Biotechnological Tools for Remediation of Acid Mine Drainage (Removal of Metals From Wastewater and Leachate), Bio-Geotechnologies for Mine Site Rehabilitation, Life Cycle Analysis of Power Generation Systems, Mulberry and Vetiver for Phytostabilization of Mine Overburden, Treatise on Geochemistry (Second Edition), Comprehensive Water Quality and Purification, Abandoned Mine Land Reclamation—Challenges and Opportunities (Holistic Approach), Favas et al., 2016c; Macías et al., 2017; Taylor et al., 2005, Costello, 2003; Favas et al., 2016c; Taylor et al., 2005; Trumm, 2010, Favas et al., 2016c; Macías et al., 2017; Skousen, 1995; Skousen et al., 2017.