About 200 Mt of sodium chloride are consumed every
year in the world.
Some sodium chloride will be added to food, some
will be used as a highway de-icing agent in cold climates, but most of it will
be used in industries such as leather tanning, dye manufacturing, paper
production, and in the production of other chemicals such as sodium carbonate,
sodium hydroxide and chlorine.
The largest source of sodium chloride is the
world's oceans.
So, how hard can it be to produce sodium chloride?
Surely you just evaporate the water off seawater
and "hey presto", sodium chloride!
In reality, it's not quite that simple .....
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