The diagram below shows how ethanol fuel is produced from corn. Summarise the information by selecting and reporting the main features and make comparisons where relevant.

The diagram shows a

step

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-by-

step

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process for producing

ethanol

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fuel from

corn

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.

Overall

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,

ethanol

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is produced through 8 main stages of different chemical and physical reactions and takes about 60

hours

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from the first

step

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of storing

corn

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to the

last

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step

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of transporting it. First of all, to produce

ethanol

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from

corn

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, it is stored and

then

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milled

to

Change preposition

into

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smaller particles. After

that

Add a comma

that,

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it has to be cooked for 4

hours

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with the addition of water. When

this

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process is finished, cooked

corn

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is

then

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fermented for 48

hours

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, which is the longest stage in the production cycle.

The next

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step

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is to separate the fermented product and to purify the

ethanol

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for another 5

hours

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, which is the

last

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step

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.

This

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produces usable

ethanol

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fuel. The final 2 stages of

this

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diagram show that after the

ethanol

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is purified, it has to be stored and

then

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transported to the final location where it will be used or sold.