main+source-fossil+fuels

=__ Fossil Fuels: __ Carbon containing fuels derived from the decomposed remains of prehistoric plants and animals = =Types of Fossil Fuels: Coal- Solid consisting of 3D network of hydrocarbon chains/rings= `Petroleum- Liquid mix of loosely hydrocarbon moecules Natural gas- Primarily methane Methane hydrate- A white ice material made of methane gas trapped inside cages of frozen water

__**Coal(Filthiest Fuel)**__ >
 * The amount of energy produced from coal worldwide is ten times the amount of energy produced by petroleum and natural gas combined.
 * Coal is the filthiest fuel due to several pollutants such as sulfur, toxic heavy metals, and radioactive isotopes.
 * Due to health/environmental concerns scientist have developed technologies that help purify coal emissions
 * Filtration- Pulverize and mix coal with water and detergents which helps seperate the impurities
 * Scrubber- Used to remove sulfur dioxide by using limestone to form solid calcium sulfate (CaSO4) which is collected and sent to a disposal site.
 * Efficient combustion- Air suspended coal is burned and decreases nitrogen oxide
 * __Petroleum (King of Fossil Fuels)__**
 * It is in liquid form which makes it easier to extract and transport
 * Eliminate mining
 * Vesatility: Sastify consumer demand by being converted into different types of fuel Ex. diesel, gasoline, jet fuel
 * The U.S. consumes 20 million barrels a day or 11 liters per citizen [[image:http://2.bp.blogspot.com/_szjTxjTNMsk/SNaM2M5VYiI/AAAAAAAAAAM/zM-zdlVyRPg/s400/petroleum.jpg width="269" height="149" align="right"]][[image:http://www.waterencyclopedia.com/images/wsci_03_img0403.jpg width="388" height="142" align="right"]]

fossil fuels continued