Part one of term paper
Coal is the most abundant fossil fuel and also regarded, as the dirtiest not only is coal inherently impure by composition by the fact that it contains ash and sulfur; coal is also difficult to burn completely. Many techniques to combust coal have been developed since the late 1800's. "The first innovation were more concerned with achieving m ...

Part two of term paper
... material called peat. Sandstone and other sedimentary rocks formed creating pressure that squeezed water from peat. As more layers formed the weight and pressure turned the peat into coal" (Hertz 1) There are many types of coal, including anthracite, bituminous, sub-bituminous, and lignite. Anthracite has the highest carbon content, anywhere from 86 to 98 percent. And produces nearly 15,000 Btu's per pound (British Thermal Unit, is the amount of heat needed to raise the temperature of the pound of w ...