The diagram below shows how ethanol fuel is produced from corn

The diagram above describes the manufacturing process which transform corn into ethanol fuel.

Overall, it is evident that corn undergoes a series of processes to produce ethanol fuel.

In the first step, the company imports corns and keeps them in the storage. After being stored, the corns are moved to the grinder to become corn flour before being mixed with water and cooked in four hours in the next step. The cooked corn mixture is created and the fermentation stage of it takes place in 48 hours. Then it is separated into two forms of products which are called liquid and solid. In the final stage of making purifying ethanol fuel, it takes 5 hours to produce the finished products. The workers store the ethanol fuel before transporting it to the product distribution system and sell to consumers.

In summary, the corn undergoes 9 steps to transform into ethanol fuel