9781422285534

32 Coal

An emissions scrubber at a coal-fired plant in North Carolina.

(CO 2 ) is formed by the combination of carbon from the coal and oxygen from the air. The other oxides form in a similar way. There are also ash particles that are very small and fly out with the gas emissions, as well as heavier particles that fall into a collection area. Fly ash can be caught by devices called electrostatic precipitators. They use static