The diagram illustrates the process producing a biofuel known as ethanol from plants and trees.
Overall, it can be seen that, the ethanol production consists of several stages, beginning with growth of plants and ending with the use of ethanol ad fuel, releasing carbon dioxide that plants later absord adain.
The process starts when plants and trees grow by absorbing sunlight and carbon dioxide. After reaching maturity , they are transported to a pre-processing facility, where the materials broken down into cellulose. After that, the cellulose sent for processing, during which sugars are extracted.
In the final stage, microbes added to the sugars for the begin fermentation, which result in the creation of ethanol. When ethanol has been purified, it becomes suitable for use in various vehicles, such as cars, trucks, airplanes. During combustion, these vehicles release carbon dioxide, which returns to the atmosphere and is eventually absorbed by plants.