The process diagram illustrates how ethanol is made. Overall, eight steps are involved in the cyclical process that starts with flora absorbing sunlight and CO2, and ends with vehicles emitting carbon dioxide back into the earth’s atmosphere to start the cycle again.
The first four steps involve preparing material for processing. In the first stage, CO2 and sunlight are absorbed by arboreal species. Subsequently, a tractor harvests the foliage, which is then sent to a shredder to be pre-processed. Next, the shredder emits cellulose, which is then sent to a facility to be processed.
Processing starts with converting the cellulose into sugar molecules, and then, when microbes are added to it, ethanol is created. This ethanol is then used in the transportation industry for cars, trucks, and planes. These vehicles running on ethanol emit carbon dioxide into the atmosphere, which then starts the cycle again as photosynthetic organisms assimilate it.