Acid Mine Drainage, Rock Drainage, and Acid Sulfate Soils. by James A. Jacobs

By James A. Jacobs

Provides the instruments had to study and resolve acid drainage problems

Featuring contributions from top specialists in technological know-how and engineering, this booklet explores the complicated biogeochemistry of acid mine drainage, rock drainage, and acid sulfate soils. It describes how one can are expecting, hinder, and remediate the environmental influence of acid drainage and the oxidation of sulfides, supplying the newest sampling and analytical tools. additionally, readers will detect new techniques for convalescing priceless assets from acid mine drainage, together with bioleaching.

Acid Mine Drainage, Rock Drainage, and Acid Sulfate Soils experiences the most up-tp-date findings within the box, delivering new insights into the underlying motives in addition to new instruments to reduce the damage of acid drainage:

  • Part I: Causes of Acid Mine Drainage, Rock Drainage and Sulfate Soils specializes in the biogeochemistry of acid drainage in several environments.
  • Part II: Assessment of...
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    Example text

    8 Summary of Data. 1 Graphic representation of overburden properties as measured by acid–base accounting. 1. 2 Various passive treatment systems to treat AMD. 1 Limestone treatment has been used for decades in acid drainage treatment. A rotating wheel powered by water grinds the limestone gravel into powder for release into the water. 2 Hydrated lime, stored in a silo, is commonly used to treat acid mine drainage. The hydrated lime needs thorough mixing, which is accomplished using this large aerator and mixer.

    Today, bioleaching or biomining methods use changes in redox conditions to mobilize metal cations from insoluble ores by biological oxidation and complexation processes. An important bacterium of acid mine drainage which is also used in the bioleaching mining process is Acidithiobacillus ferrooxidans, which oxidizes ferrous iron (Fe2+) and generates ferric iron (Fe3+), an oxidant. This microbe, common to acid mine drainage environments, is used in the bioleaching process to leach copper from low-grade mine tailings and waste mining rock.

    The cold-mix asphalt process can use mine tailings and mining wastes to create valuable recycled products to be used locally. The asphalt product prevents the metals from leaching and stops the acid generation process when used properly. Shale gas fracturing, currently employed in Pennsylvania and several other states, requires millions of gallons of water per well. Recycling of acid mine drainage for hydraulic fracturing will divert some of the more than 300 million gallons of mine drainage water that flows into Pennsylvania's rivers and streams each day.

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