Biofuels is the appealing source of energy for future fuel needs. Biodiesel can be developed from growing plants which naturally contains oil namely jatropha curcas, palm oil, Soybean and algae. Bioethanol can be from sugar crops like sugarcane, sugar beet, maize, corn etc by yeast fermentation. Wood products can likewise be converted into Biofuels.

The obtained Biofuels from these items consists of both advantages 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 resources, and it is eco-friendly and pure fuels so it is excellent for autos. It reduces the green home significantly compared to other fossil fuels.

First generation biofuels can save carbon emissions about 60% compared to nonrenewable fuel sources whereas the second generation biofuels are better than first generation fuels. It uses carbon emission savings approximately 80%. Recently, UK Government publication stated that biofuels can minimize emissions by 50-60%. Efficiency of the engine increases by using biodiesel as the lube.

Economical: The biofuel's price reduces considerably if the biofuel production technology spreads worldwide. The biofuels are developed locally which immediately improves the rural advancement as the innovation depends mainly on manual power. The rapid boost of biofuel concurrently increases the production of these oil crops which promotes the agricultural industry. The UK government has revealed that it reduces the taxation for lorries which are environment-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 renewable and it is biodegradable and safer to handle and less hazardous than fossil fuels.

Disadvantages of Biofuels:

Environmental Alarm: Adapting more lands for planting crops for biofuel extraction will discarded more environments. More forests have been destroyed in Asian nations for the plantation. The producing mechanism of these biodiesel undoubtedly requires nonrenewable fuel sources 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 undesirable and biofuels plants can not be setup near the large communities.

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

Availability: The biofuels are not available in surplus so the diesel engines which are customized for biodiesel usage may face issues. The most cars are not geared up for utilizing biofuels in the engines. Some biodiesel can not withstand frost; it gets frozen in the colder areas. It likewise increases the threat of microbial growth in the engine. Only couple of petrol stations provide this biofuels and it is impossible to transport the biofuels utilizing pipelines.

Carbon emission: Biofuels are minimizes the Jatropha greenhouse gases emission compared to other nonrenewable fuel sources. Recently, the European researcher reported that the burning of biodiesel specifically corn and rapeseed produces more nitrous oxide.