These pictures give information about the manufacturing process of a biofuel called ethanol.
Overall, this diagram is a circulation process. There are 8 stages in this diagram, beginning with energy absorbing of flora and finishing with carbon dioxide emissions and reabsorbing carbon dioxide of trees and plants.
Initially, plants and tree grow by the energy from sunlight and carbon dioxide. After that plants are harvested. Plants are pre-processed by a special equipment in order to produce celluloses. Afterwards, celluloses are transported to laboratories.
The next step is processing celluloses in laboratories by using chemicals. After this stage, celluloses are converted into sugars. Subsequently, sugars are combined with microbes so as to create ethanol.
The final stage is using ethanol in vehicles such as and planes, trucks, and cars. Being used as a fuel, ethanol releases carbon dioxide into the atmosphere and carbon dioxide is reabsorbed by the plants and trees, perpetuating the process.