Word: nox
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Dates: during 1990-1999
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...science behind Otisca are clear and simple. Its advantages in terms of transportation and use in various engines, including diesels and turbines, put it in direct competition with oil and gas. Coal's chief disadvantages are that it is bulky and dirty. Sulfur oxides (SOx) and nitrogen oxides (NOx) have been indicted as principal villains in the formation of acid rain. More than half the nation's electricity is produced by power plants that burn coal. By running finely ground coal through a chemical bath (currently pentane, a hydrocarbon similar to butane), the Otisca process separates...