Articles tagged with Acid Mine Drainage
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Scientists have developed a breakthrough method to convert hazardous acid mine drainage into ferric chloride, a widely used water treatment chemical. Laboratory tests achieved removal rates of over 99% for pollutants from river water.
A new study finds that warming climate is causing a doubling of copper, zinc, and sulfate concentrations in metal sulfide-rich watersheds in Colorado's mountains. The greatest increases are seen at high altitudes, where natural chemical weathering of bedrock is the source of rising acidity and metals.
The West Virginia University researchers will develop and advance a pioneering method to extract and separate rare earth elements from acid mine drainage and coal waste with the new funding. The project aims to create employment in regions of West Virginia impacted by the US transition away from fossil fuels.
Researchers at Penn State developed a luminescent sensor that can detect and quantify low concentrations of terbium in complex acidic samples. The sensor uses a protein called lanmodulin, which is selectively binding to rare earth elements, and has the potential to help develop a domestic supply of these metals.
Cleanup efforts can restore affected streams to near natural conditions within 10-15 years, with common responses seen despite differing aquatic life and toxic metals. Shared feeding habits and behavioral characteristics unified how stream invertebrates responded to alleviation of metal pollutants.
Researchers at West Virginia University are developing a technology to extract rare earth elements from acid mine drainage, producing up to 400 tons annually. This process could help address water pollution and dependence on imports, as the US currently imports nearly all its rare earth elements.
The West Virginia Water Research Institute will scale up its Rare Earth Recovery Project with the new funding, which includes building a facility at an acid mine drainage treatment plant near Mount Storm. The project aims to extract rare earth elements from coal and coal byproducts, reducing dependence on China.
A Duke University study found that blending fracking wastewater with acid mine drainage can remove up to 100% of radium and other radioactive contaminants, making the treated water suitable for reuse in hydraulic fracturing. This process could reduce environmental risks and provide a win-win for the industry and the environment.
Researchers found that certain wetlands were successful in cleaning up acid mine drainage due to factors such as low water acidity and minimal destruction of native plants. However, clogging of limestone drains was a common issue, highlighting the need for regular maintenance and larger constructed wetlands.
Researchers found Leptospirillum ferrooxidans is a more important contributor to mine pollution than previously thought. The study could provide the mining industry with a new predictive technology to estimate acid mine drainage from a given site.