Biofuels is the promising source of energy for future fuel requirements. Biodiesel can be established from growing plants which naturally consists of oil particularly jatropha curcas, palm oil, Soybean and algae. Bioethanol can be drawn out from sugar crops like sugarcane, sugar beet, maize, corn and so on by yeast fermentation. Wood items can also be converted into Biofuels.

The gotten Biofuels from these items includes both advantages and downsides.

Advantages of Biofuels:

Ecological Benefits: The primary expectation of utilizing the biofuel is to be carbon neutral, less of CO and Sulfur, as it is made from natural deposits, and it is sustainable and pure fuels so it is great for autos. It lowers the green house substantially compared to other nonrenewable fuel sources.

First generation biofuels can save carbon emissions about 60% compared to fossil fuels whereas the 2nd generation biofuels are better than very first generation fuels. It uses carbon emission savings as much as 80%. Recently, UK Government publication mentioned that biofuels can lower emissions by 50-60%. Efficiency of the engine increases by utilizing biodiesel as the lubricant.

Economical: The biofuel's price decreases significantly if the biofuel production innovation spreads worldwide. The biofuels are developed locally which immediately improves the rural development as the technology depends generally on manual power. The quick increase of biofuel simultaneously increases the production of these oil crops which stimulates the farming market. The UK government has revealed that it minimizes the taxation for automobiles which are eco-friendly. Additionally, the resilience of the engine increases while utilizing these flammable fuels in engines.

Renewability and Degradable: The biofuels are made from crops which are eco-friendly and it is naturally degradable and safer to handle and less than fossil fuels.

Disadvantages of Biofuels:

Environmental Alarm: Adapting more lands for planting crops for biofuel extraction will got rid of more environments. More forests have been destroyed in Asian countries for the plantation. The producing system of these biodiesel certainly requires fossil fuels which produces more carbon emissions. High initial financial investment is required for the biodiesel production.

Odour: Certain biofuel crop produces heavy smell those smells are normally unwanted and biofuels plants can not be setup near the large neighborhoods.

Food and water Requirements: Some biofuel crops such as corn oil, palm oil are edible for cooking