
Biofuels is the appealing source of energy for future fuel requirements. Biodiesel can be developed from growing plants which naturally contains oil namely jatropha curcas, palm oil, Soybean and algae. Bioethanol can be drawn out 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 contains 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 eco-friendly and pure fuels so it is excellent for autos. It lowers the green house considerably 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 uses carbon emission savings as much as 80%. Recently, UK Government publication specified that biofuels can reduce emissions by 50-60%. Efficiency of the engine increases by utilizing biodiesel as the lubricant.
Economical: The biofuel's rate reduces substantially if the biofuel production technology spreads worldwide. The biofuels are developed locally which immediately boosts the rural advancement as the innovation depends primarily on manual power. The rapid increase of biofuel all at once increases the production of these oil crops which stimulates the farming industry. The UK government has announced that it reduces the tax for lorries which are environment-friendly. Additionally, the resilience of the engine increases while using these combustible fuels in engines.
Renewability and Degradable: The biofuels are made from crops which are renewable and it is naturally degradable and much safer to deal with and less dangerous than nonrenewable fuel sources.
Disadvantages of Biofuels:
Environmental Alarm: Adapting more lands for planting crops for biofuel extraction will discarded more habitats. More forests have actually been ruined in Asian nations for the plantation. The producing mechanism of these biodiesel indeed requires fossil fuels which produces more carbon emissions. High preliminary financial investment is required for the biodiesel production.
Odour: Certain biofuel crop produces heavy odor those odours are typically 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 demand for these crops for biofuels may raise the cost of these food crops. The substantial quantity of water is needed for appropriate yield, even for dry spell resistant jatropha curcas plants.
Availability: The biofuels are not offered in surplus so the diesel motor which are modified for biodiesel usage might face issues. The most automobiles are not equipped for utilizing biofuels in the engines. Some biodiesel can not withstand frost; it gets frozen in the colder areas. It likewise increases the risk of microbial development in the engine. Only few fuel stations use this biofuels and it is impossible to carry the biofuels utilizing pipelines.
Carbon emission: Biofuels are lowers the Jatropha greenhouse gases emission compared to other fossil fuels. Recently, the European researcher reported that the burning of biodiesel especially corn and rapeseed produces more laughing gas.