Biofuels is the promising source of energy for future fuel needs. 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 and so on by yeast fermentation. Wood items can likewise be transformed into Biofuels.

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

Advantages of Biofuels:

Ecological Benefits: The main expectation of using 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 automobiles. It decreases the green house substantially compared to other nonrenewable fuel sources.

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

Economical: The biofuel's rate reduces significantly if the biofuel production innovation spreads out worldwide. The biofuels are established locally which immediately enhances the rural advancement as the innovation depends generally on manual power. The fast boost of biofuel simultaneously increases the production of these oil crops which promotes the farming industry. The UK federal government has revealed that it lowers the taxation for vehicles which are environmentally friendly. Additionally, the durability of the engine increases while using these flammable fuels in engines.

Renewability and Degradable: The biofuels are made from crops which are eco-friendly and it is biodegradable and safer to handle and less harmful than nonrenewable fuel sources.

Disadvantages of Biofuels:

Environmental Alarm: Adapting more lands for planting crops for biofuel extraction will tossed away more environments. More forests have been damaged in Asian nations for the plantation. The producing mechanism of these biodiesel indeed needs nonrenewable fuel sources which produces more carbon emissions. High preliminary investment is required for the biodiesel production.

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

Food and water Requirements: Some biofuel crops such as corn oil, palm oil are edible for cooking; the demand for these crops for biofuels may raise the cost of these food crops. The big amount of water is required for proper yield, even for drought resistant Jatropha plants.

Availability: The biofuels are not available in surplus so the diesel engines which are modified for biodiesel use may deal with problems. The most vehicles are not geared up for using biofuels in the engines. Some biodiesel can not resist frost; it gets frozen in the chillier locations. It also increases the threat of microbial growth in the engine. Only few gas stations use this biofuels and it is impossible to carry the biofuels utilizing pipelines.

Carbon emission: Biofuels are lowers 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 nitrous oxide.