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A coal-fired power plant with ash ponds. Coal ash, also known as coal combustion residuals (CCRs), is the mineral residue that remains from burning coal. Exposure to coal ash and to the toxic substances it contains may pose a health risk to workers in coal-fired power plants and residents living near coal ash disposal sites.
Also, water-soluble sodium salts present in the ash enhance the sodium content in water further. Thus river water is converted into soft water by eliminating Ca and Mg ions and enhancing Na ions by coal-fired boilers. Soft water application in irrigation (surface or ground water) converts the fertile soils into alkaline sodic soils. [21]
The water, which was being siphoned off the top of an old coal ash pond for re-use at the Boswell Energy Center in Cohasset, Minn., escaped from a break in an underground bend in the pipe ...
The Kingston Fossil Plant Spill was an environmental and industrial disaster that occurred on December 22, 2008, when a dike ruptured at a coal ash pond at the Tennessee Valley Authority's Kingston Fossil Plant in Roane County, Tennessee, releasing 1.1 billion US gallons (4.2 million cubic metres) of coal fly ash slurry.
Harmful byproduct of burning coal for power has been used as construction fill for decades, but no one kept track of where it went. EPA: Cancer risk from coal ash higher than previously revealed ...
Prior to 2015, the pollution of groundwater by coal ash was long underappreciated among the many and varied hazards that coal plants pose to human health and the natural environment.
Photomicrograph made with a scanning electron microscope and back-scatter detector: cross section of fly ash particles. Fly ash, flue ash, coal ash, or pulverised fuel ash (in the UK)—plurale tantum: coal combustion residuals (CCRs)—is a coal combustion product that is composed of the particulates that are driven out of coal-fired boilers together with the flue gases.
Once submerged in the water, the coal ash could no longer get airborne. Breathing it would have been a major health hazard. “And then the 2015 federal rules came into play,” Mitchell said.