1. Petroleum / Crude Oil Separation methods
The liquid form of petroleum is known as crude oil, which is a naturally-occurring substance found trapped in certain rocks below the earth's crust (lithosphere). ... The world reserves of crude oil are estimated at more than one trillion barrels (one barrel equals 42 US gallons or 159 litres), of which more than 75% belongs to the 11 OPEC (Organisation of Petroleum Exporting Countries) countries. ... Crude oil contains countless types of different hydrocarbons all mixed together. ... Only 40% of distilled crude oil is gasoline; however, gasoline is one of the main products produced by oi...
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