What is lignite?
By Nikita Billett, 4th Jul 2012 | Follow this author
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Posted in WikinutNewsScience
One of the most important searches being carried on by scientists is for new sources of energy. It’s not just that they want to find cheaper and more efficient sources of energy to do the work of the world, it’s also because some of the natural sources we now have will eventually be used up.
Different kinds of coal
Have you ever seen an abandoned coal mine? At one time coal was being taken from there to feed huge furnaces and to heat buildings. But now there isn’t enough coal left to make it worth mining.
Coal is still, however, the most important solid fuel man has. In fact, it furnishes the united states with about half of its fuel.
Let’s consider the different kinds of coal. Obviously, a process that took millions upon millions of years didn’t create exactly the same kind of product everywhere.
Peat, for example, is the youngest of all coals. This means the vegetation from which it came was buried a shorter time than that of other coals. Peat has the least value of all solid fuels.
Lignite is sometimes called brown coal. It is a little older than peat and has more heating value.
Bituminous coal has the highest heating value of all solid fuels. Finally, there is anthracite coal, which is the hardest of all coals and the oldest in nature.
Comments
4th Jul 2012 (#)
Different forms of coal like peat, lignite, bitumen have different composition and have different percentage of carbon in them. Once the value of carbon will differ, combustion value of contents will also differ.
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4th Jul 2012 (#)
Yes Yaseen, just like anything else in nature differences in composition affect value
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4th Jul 2012 (#)
good info.Welcome to wikinut.
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4th Jul 2012 (#)
thank you Shaheda
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