The illustration provided gives information about the production of a biofuel named ethanol.
Overall, this process comprises eight main steps, beginning with plants and trees absorbing sunlight and carbon dioxide (CO2) for growth, followed by the pre-processing and processing of the raw materials to produce ethanol, and culminating in different means of transport using ethanol as fuel and then releasing CO2 into the atmosphere. The process begins again when plants and trees take in the CO2 that is released.
In the first step, plants and trees collect energy in the forms of sunlight and CO2, which facilitates their growth. Once they reach maturity, they are harvested and transported to a factory where they are pre-processed in a special machine that breaks them into smaller pieces to extract cellulose.
The extracted cellulose is then delivered to a laboratory where it is chemically processed to create sugars. The following step involves mixing the resulting sugars with microbes, producing the end product called ethanol, which can be used as fuel for various types of transport, including cars, trucks and airplanes. Subsequently, these means of transport release CO2 into the air, which is then absorbed by trees and plants, allowing the cyclical process to start over again.