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Lecture 8

BIOL 111 Lecture 8: BIOL 111 week 8 pt 2


Department
Biology
Course Code
BIOL 111
Professor
Peter T Boag
Lecture
8

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BIOL 111: Week 8- Non-renewable Energy Resources pt(2)
Natural Gas
Natural gas is often found above reservoirs of oil
A mixture of methane, ethane, propane, butane and small amount of hydrogen sulphide and
other impurities
Mostly methane
Formed when decomposing plant and animal matter are exposed to intense heat and pressure
under the surface of the earth over millions of years
Natural Gas Reserves
Russia
Iran
Qatar
Liquefied Natural Gas (LNG)
Natural gas (methane and ethane) that has been converted into liquid for ease and safety of non-
pressurized storage and transport
Condensed into liquid at -162 C
Volume shrank to 1/600 of gaseous state
Colourless, non toxic and non corrosive
LNG is mainly transported over the seas
Canada's Natural Gas
Canada is the fifth-largest natural gas producer in the world
Natural gas reserves good for 300 years
Natural gas meets one third of canada's energy needs
Cleaner energy; easier to transport; found in nearly every province and territory
Advantages and Disadvantages of Natural Gas
Advantages
Disadvantages
Amply supplies
High net energy yield
Low cost
Less air pollution
Less co2 emission
Low land use
Easy transportation
non renewable resource
Release co2 when burned
Requires pipelines
Sometimes burned off
Requires expensive LNG carriers
Coal
Most abundant fossil fuel on the planet
Consists of mostly carbon, small amount of Sulphur
Coal formation- buried plants that lived 300-400 million years ago were subject to intense heat
and pressure
Widely used to generate electricity and extract steel
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