Bio ethanol is a good alternative. It is much cleaner than normal fuels, as by using bio ethanol, it reduces the emission of particulars and formation of ozone compared to normal fuels such as diesel. However, as bio ethanol, as first generation bio fuel, despite its advantages, it has many disadvantages too. Bio ethanol is expensive compare to normal fuels and space consuming in order to produce significant amount of bio ethanol. Moreover, the amount of CO and NOx produced by using bio ethanol is almost the same as using conventional fuels. Therefore, there are still many rooms for bio ethanol to improve in terms of production and source of production in order to make bio ethanol more efficient and able to be use widely.
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