The flow chart illustrates how to manufacture a biofuel called ethanol and to use in daily life .
Overall,there are several steps about how ethanol is made and 3 types of way that can be consumed.It is evident that a circulation can be found during biofuel production.
First and foremost,many plants and trees are planted and grows,absorbing energy such as sunlight and carbon dioxide with some complex chemical methods.Then plants and trees that are mature will be harvested by some agricultural tools and deliver to the place for pre-processing.After that,the raw materials convert into the chemicals called Cellulose and then are transported to the factory for further processing.During the processing,that ingredients will mix with sugars at first,and microbes will be added on the subsequnent stage,finally ethanol will be made.
While the biofuel being manufactured,it can be consumed by cars,trucks and planes for travelling.The emission called carbon dioxide will enter the air,and eventually participate in air circulation,before is used as the energy for new production.