Biofuels is the promising source of energy for future fuel requirements. Biodiesel can be developed from growing plants which naturally consists of oil specifically Jatropha, palm oil, Soybean and algae. Bioethanol can be drawn out from sugar crops like sugarcane, sugar beet, maize, corn etc by yeast fermentation. Wood items can likewise be converted into Biofuels.

The obtained Biofuels from these items includes both benefits and disadvantages.

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 benefits autos. It lowers the green house significantly compared to other fossil fuels.

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

Economical: The biofuel's cost decreases substantially if the biofuel production technology spreads out worldwide. The biofuels are established locally which automatically improves the rural advancement as the technology depends mainly on manual power. The quick increase of biofuel at the same time increases the production of these oil crops which stimulates the agricultural industry. The UK federal government has revealed that it reduces the tax for cars which are environmentally friendly. Additionally, the durability of the engine increases while utilizing these combustible fuels in engines.

Renewability and Degradable: The biofuels are made from crops which are renewable and it is eco-friendly and much safer to handle and less hazardous 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 nations for the plantation. The producing mechanism of these biodiesel undoubtedly requires fossil fuels which produces more carbon emissions. High initial financial investment is needed for the biodiesel production.

Odour: Certain biofuel crop produces heavy odor those smells are normally unfavorable and biofuels plants can not be setup near the big communities.

Food and water Requirements: Some biofuel crops such as corn oil, palm oil are edible for cooking; the need for these crops for biofuels may raise the rate of these food crops. The substantial quantity of water is required for proper yield, even for drought resistant jatropha curcas plants.

Availability: The biofuels are not available in surplus so the diesel motor which are modified for biodiesel use may deal with issues. The most autos are not equipped for using biofuels in the engines. Some biodiesel can not resist frost; it gets frozen in the chillier areas. It also increases the risk of microbial development in the engine. Only few gas stations provide this biofuels and it is impossible to transfer the biofuels utilizing pipelines.

Carbon emission: Biofuels are reduces the jatropha curcas greenhouse gases emission compared to other fossil fuels. Recently, the European scientist reported that the burning of biodiesel especially corn and rapeseed produces more laughing gas.