The diagram below shows how ethanol fuel is produced from corn

The diagram gives information about ethanol fuel production from corn.
Overall, it is clear that the process of ethanol fuel from corn requires a series of stages.
First of all, people produce and receive corn. After that, it is stored and milled. From this, it is also cooked and takes time, about 4 hours, while water is added. At the next stage of the process, humans ferment it a long time, nearly 2 days. Following that, the fermented product is separated into two substances. They are liquid and solid by-product. Subsequently, the liquid product is purified into ethanol fuel and takes a little time, about five hours. At the penultimate stage, the obtained product is stored again. And finally, the ethanol fuel is transported and used for industrial purposes