The diagram shows how ethanol is produced from corn

The diagram displays the process of

ethanol

production from the use of

corn

.

Overall

, the entire process involves nine steps and consists of three main stages, including the collection of

corn

, manufacturing and purification of

ethanol

and delivery of the product to the customer.

Firstly

, the

corn

is harvested from the farm and stored at the warehouse, before being delivered to the factory for processing.

Next,

the

corn

turns into powder from the milling process and is cooked with the addition of water for about 4 hours. Once it has been cooked, it starts undergoing the progress of fermentation which requires 48 hours to complete. After that, the

corn

-water mixture is fully fermented, it requires an additional step to separate the liquid from the solid by-product before a 5-hour purification of

ethanol

. After the

ethanol

is completely purified, it is

then

stored until it is shipped by a truck to the gas station.