GLGY 308 Lecture Notes - Lecture 15: Bituminous Coal, Anthracite, Exothermic Reaction
28 Dec 2019
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Document Summary
Ultimate source of energy is the sun. Co2 is buried as organic material and released back into atmosphere when organic material is burned. Coal: consists of the compressed, altered remains of vegetation. When plants die and get buried, they become layers of organic material. Coal is the altered remains of vegetation. Oil is from marine organisms (forms in marine environments of the past) Natural gas is sometimes associated with oil. Burning coal releases co2 back into atmosphere environmental concern. Anthracite has been subjected to higher temperatures and pressures (which drives off impurities), so it burns more clearly. Lignite: peat after being compressed by layer of sedimentary rock. Bituminous coal: impurities removed from lignite after compression by more layers. Anthracite coal (high grade coal): bituminous coal that is heated up, that is more compressed, and carbon rich, burns cleaner. Coal is a rock with biological origin. Anthracite has been heated up more than regular coal.
