The diagram illustrates the process involved in the production of a biofuel named ethanol. Overall, the process is cyclical, commencing with the intake of carbon dioxide by plants and culminating at the emissions of the same into the atmosphere. Additionally, it encompasses natural, agriculural, mechanical and chemical processes.
The procedure initiates with the absorption of sunlight and carbon dioxide by plants and trees for energy preparation and consumption. This vegetation is consequently harvested and it undergoes pre-processing, which involves the breakdown of the pre-processed material into cellulose fibres. Following this, it undergoes further processing in a factory laboratory set-up, where microbes are added to react with the instrinsic sugar molecules. As a result, ethanol is produced.
Ethanol has widespread applications as a biofuel, paticulalry in fueling vehicles such as cars, trucks, and aeroplanes. As a by product of fuel consumption in these vehicles, carbon dioxide is released back into the atmosphere. The trees subsequently absorbs this gas yet again, and thus, the cycle continues.