Biofuels is the appealing source of energy for future fuel needs. Biodiesel can be developed from growing plants which naturally contains oil particularly 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 items can also be converted into Biofuels.

The acquired Biofuels from these products includes both benefits and downsides.

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 resources, and it is renewable and pure fuels so it benefits cars. It decreases the green house significantly compared to other fossil fuels.

First generation biofuels can conserve carbon emissions about 60% compared to fossil fuels whereas the second generation biofuels are better than very 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 lubricant.

Economical: The biofuel's price reduces substantially if the biofuel production innovation spreads worldwide. The biofuels are developed locally which automatically boosts the rural development as the technology depends primarily on manual power. The fast boost of biofuel simultaneously increases the production of these oil crops which promotes the agricultural market. The UK federal government has actually announced that it decreases the taxation for automobiles which are environmentally friendly. Additionally, the durability 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 naturally degradable and safer to manage and less harmful than fossil fuels.

Disadvantages of Biofuels:

Environmental Alarm: Adapting more lands for planting crops for biofuel extraction will threw away more habitats. More forests have been ruined in Asian countries for the plantation. The producing mechanism of these biodiesel certainly needs nonrenewable fuel sources which produces more carbon emissions. High initial 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 big 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 might raise the rate of these food crops. The substantial quantity of water is required for proper yield, even for drought resistant jatropha curcas plants.

Availability: The biofuels are not readily available in surplus so the diesel engines which are modified for biodiesel use may face problems. The most cars are not equipped for using biofuels in the engines. Some biodiesel can not withstand frost; it gets frozen in the chillier locations. It also increases the threat of microbial development in the engine. Only few gas stations provide 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 nonrenewable fuel sources. Recently, the European scientist reported that the burning of biodiesel especially corn and rapeseed produces more laughing gas.