The diagram shows the process of producing ethanol fuel from corn. The process includes nine main stages, starting from storing corn and ending with transporting the final ethanol product.
In the first stage, corn is collected and stored. After that, it goes through a milling process to break it into smaller particles. In the third step, the milled corn is cooked with water for about 4 hours. Once cooking is complete, the mixture is left to ferment for 48 hours.
The fifth stage involves separating the fermented mixture into two parts: a solid by-product and a liquid. Only the liquid is used to produce ethanol fuel. This liquid then goes through a purification process, which takes 5 hours. After purification, the ethanol is stored for a short period.
Finally, the stored ethanol fuel is transported to different locations for use. Overall, the process is a combination of physical and chemical steps that turn corn into a usable source of renewable fuel.