The diagram represents the process of how ethanol fuel is manufactured.
Overall, the process involves several key stages: initial preparation, cooking and fermentation of the corn, followed by the separation and purification of the ethanol before it is ready for distribution.
The process starts with the corn being stored. The first step includes milling, after which water is added to the corn. This mixture is then cooked for four hours. Then the cooked substance fermented for 48 hours.
Following fermentation, the substance is separated into a liquid and a solid by-product. The liquid one then enters the purification stage, which lasts for five hours, to become ethanol. Once purified, the ethanol fuel is stored and finally transported to its end users.