The diagram below shows how a biofuel called ethanol is produced. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The diagram illustrates the

process

used to produce biofuel from

ethanol

.

Overall

, there are six main stages in the production of

ethanol

, starting with the initial collection of plants and trees and ending with the utilisation of

ethanol

as a fuel for vehicles.

To begin

with, plants and trees capture sunlight and carbon dioxide in an early stage known as photosynthesis. Once harvested, the plant material undergoes a pre-processing phase where it is distributed and processed using machinery to obtain cellulose. In the next stage, chemicals are added to break the cellulose into sugars, which are

then

combined with microbes in a fermentation

process

.

This

fermentation

process

converts the sugars into

ethanol

over a period of time. After fermentation, the mixture undergoes a distillation

process

to separate the

ethanol

from other by-products. The

ethanol

is

then

purified to remove any remaining impurities, ensuring it meets fuel-grade standards.

Finally

, the purified

ethanol

is stored and can be transported for use in various types of vehicles

such

as cars,

airplanes

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aeroplanes

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, and buses, providing a renewable source of energy. In conclusion, the production of

ethanol

involves a series of stages, from the initial growth of plants to the final use of

ethanol

as a biofuel, highlighting the importance of each step in creating a sustainable energy source.