Biofuels is the promising source of energy for future fuel requirements. Biodiesel can be established from growing plants which naturally contains oil specifically jatropha curcas, palm oil, Soybean and algae. Bioethanol can be extracted from sugar crops like sugarcane, sugar beet, maize, corn etc by yeast fermentation. Wood products can also be converted into Biofuels.

The obtained Biofuels from these products consists of both benefits and downsides.

Advantages of Biofuels:

Ecological Benefits: The main 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 renewable and pure fuels so it benefits vehicles. It reduces the green house significantly compared to other fossil fuels.

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

Economical: The biofuel's cost reduces significantly if the biofuel production innovation spreads worldwide. The biofuels are established locally which automatically boosts the rural development as the technology depends mainly 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 actually announced that it lowers the tax for vehicles which are environmentally friendly. Additionally, the sturdiness of the engine increases while using these flammable fuels in engines.

Renewability and Degradable: The biofuels are made from crops which are renewable and it is naturally degradable and more secure to manage and less harmful than nonrenewable fuel sources.

Disadvantages of Biofuels:

Environmental Alarm: Adapting more lands for planting crops for biofuel extraction will got rid of more habitats. More forests have actually been destroyed in Asian countries for the plantation. The producing mechanism of these biodiesel undoubtedly requires fossil fuels which produces more carbon emissions. High preliminary financial investment is needed for the biodiesel production.

Odour: Certain biofuel crop produces heavy odor those odours are usually unfavorable 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; the need for these crops for biofuels may raise the price of these food crops. The huge quantity of water is required for correct yield, even for drought resistant jatropha curcas plants.

Availability: The biofuels are not readily available in surplus so the diesel engines which are modified for biodiesel usage might face issues. The most autos are not equipped for utilizing biofuels in the engines. Some biodiesel can not resist frost; it gets frozen in the chillier areas. It also increases the threat of microbial growth in the engine. Only couple of gas stations provide this biofuels and it is difficult to transport the biofuels using pipelines.

Carbon emission: Biofuels are minimizes the jatropha curcas greenhouse gases emission compared to other nonrenewable fuel sources. Recently, the European researcher reported that the burning of biodiesel particularly corn and rapeseed produces more gas.