The diagram illustrates the process of producing ethanol fuel from corn.
Overall, the production of ethanol fuel involves a total of nine steps, beginning with the collection of corn and ending with the transportation of the final product. The process includes stages of physical transformation, chemical reaction, and purification.
The first step is the harvesting of corn, which is then stored before being sent to milling. After milling, water is added to the milled corn, and the mixture is cooked for 4 hours. Once cooking is complete, the mixture undergoes fermentation for 48 hours, which is the longest stage in the process.
Following fermentation, the resulting substance is separated into liquid and solid components. The solid by-product is removed, while liquid is processed further. The liquid ethanol is then purified in a step that lasts for 5 hours.
Finally, the purified ethanol is stored and later transported for distribution and use