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Spontaneous combustion is caused when coal oxidizes and airflow is insufficient to dissipate heat; this more commonly occurs in stockpiles and waste piles, rarely in bedded coal underground. Where coal fires occur, there is attendant air pollution from emission of smoke and noxious fumes into the atmosphere.
The piles also create a fire hazard, with the potential to spontaneously ignite. Because most coal refuse harbors toxic components, it is not easily reclaimed by replanting with plants like beach grasses. [4] [5] Gob has about four times as much toxic mercury and more sulfur than typical coal. [2] Culm is the term for waste anthracite coal. [2]
Khian Sea waste disposal incident: 1986 Kingston Fossil Plant coal fly ash slurry spill: coal fly ash slurry spill 2008 United States 2015 Gold King Mine waste water spill: acid mine waste spill 2015 United States Gold mine at Kingston, Queensland: toxic waste Australia Lake Karachay: radioactive waste dump site Russia Love Canal: toxic waste dump
Millions of tons of coal ash leftover from burning the planet’s dirtiest fossil fuel sit in ponds and landfills across the US. But this waste may also be a treasure trove for the rare earth ...
To accommodate mines and associated infrastructure, land is cleared extensively, consuming significant energy and water resources, emitting air pollutants, and producing hazardous waste. [4] According to The World Counts page "The amount of resources mined from Earth is up from 39.3 billion tons in 2002. A 55 percent increase in less than 20 years.
Coal ash contains many toxic substances that may affect human health, if people are exposed to them above a certain concentration in the form of particulate matter.So it is necessary to avoid situations in which employees working in coal-fired power plants or public members living close to coal ash landfills will be exposed to high coal ash dust concentrations. [4]
Smog in the metropolis of 11.2 million people comes from a combination of the coal-fired plants, vehicle and motorcycle exhaust, trash burning and industries, and many in the city are demanding ...
Coal can also be cleaned in part by chemical treatments. The concept is to use chemicals to remove deleterious components of coal, leaving the combustible material behind. Typically, coal cleaning entails treatment of crushed coal with acids or bases. This technology is expensive and has rarely moved beyond the demonstration phase.