Biofuels is the promising source of energy for future fuel requirements. Biodiesel can be established from growing plants which naturally consists of 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 converted into Biofuels.

The gotten Biofuels from these items contains 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 renewable and pure fuels so it benefits cars. It reduces the green home considerably compared to other fossil fuels.

First generation biofuels can conserve carbon emissions about 60% compared to fossil fuels whereas the 2nd generation biofuels are much better than very first generation fuels. It uses carbon emission savings approximately 80%. Recently, UK Government publication mentioned that biofuels can reduce emissions by 50-60%. Efficiency of the engine increases by using biodiesel as the lubricant.

Economical: The biofuel's cost reduces significantly if the biofuel production innovation spreads worldwide. The biofuels are developed locally which instantly enhances the rural development as the technology depends primarily on manual power. The rapid boost of biofuel at the same time increases the production of these oil crops which stimulates the farming market. The UK federal government has announced that it lowers the taxation for lorries 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 renewable and it is eco-friendly and safer to manage and less harmful than nonrenewable fuel sources.

Disadvantages of Biofuels:

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

Odour: Certain biofuel crop produces heavy smell those smells 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 demand for these crops for biofuels might raise the price of these food crops. The substantial quantity of water is needed for correct yield, even for dry spell resistant Jatropha plants.

Availability: The biofuels are not available in surplus so the diesel motor which are modified for biodiesel use might face issues. The most autos are not geared up for using biofuels in the engines. Some biodiesel can not withstand frost; it gets frozen in the colder locations. It also increases the risk of microbial growth in the engine. Only couple of gas stations use this biofuels and it is impossible to transport the biofuels utilizing pipelines.

Carbon emission: Biofuels are reduces the jatropha curcas greenhouse gases emission compared to other fossil fuels. Recently, the European scientist reported that the burning of biodiesel particularly corn and rapeseed produces more laughing gas.