Biofuels is the promising source of energy for future fuel requirements. Biodiesel can be established from growing plants which naturally includes oil specifically Jatropha, palm oil, Soybean and algae. Bioethanol can be extracted from sugar crops like sugarcane, sugar beet, maize, corn and so on by yeast fermentation. Wood items can also be transformed into Biofuels.

The obtained Biofuels from these products includes both advantages and drawbacks.

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 resources, and it is eco-friendly and pure fuels so it benefits cars. It reduces the green house significantly compared to other fossil fuels.

First generation biofuels can conserve carbon emissions about 60% compared to nonrenewable fuel sources whereas the second generation biofuels are much better than first generation fuels. It provides carbon emission savings up to 80%. Recently, UK Government publication specified that biofuels can decrease emissions by 50-60%. Efficiency of the engine increases by utilizing biodiesel as the lube.

Economical: The biofuel's price decreases considerably if the biofuel production technology spreads out worldwide. The biofuels are developed in your area which immediately boosts the rural advancement as the innovation depends generally on manual power. The rapid boost of biofuel at the same time increases the production of these oil crops which promotes the farming market. The UK federal government has announced that it lowers the taxation for cars which are environmentally friendly. Additionally, the toughness of the engine increases while using these flammable fuels in engines.

Renewability and Degradable: The biofuels are made from crops which are sustainable and it is eco-friendly and much safer to deal with 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 habitats. More forests have been ruined in Asian countries for the plantation. The producing system of these biodiesel indeed requires fossil fuels which produces more carbon emissions. High preliminary investment is needed for the biodiesel production.

Odour: Certain biofuel crop produces heavy smell those odours are generally unwanted 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 rate of these . The big quantity of water is needed for appropriate yield, even for drought resistant jatropha curcas plants.

Availability: The biofuels are not available in surplus so the diesel motor which are customized for biodiesel usage may face problems. The most autos are not geared up for using biofuels in the engines. Some biodiesel can not resist frost; it gets frozen in the cooler locations. It likewise increases the danger of microbial growth in the engine. Only few gas stations offer this biofuels and it is difficult to carry the biofuels using pipelines.

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