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

The obtained 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 sustainable and pure fuels so it is good for cars. It decreases the green home significantly compared to other fossil fuels.

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

Economical: The biofuel's rate reduces significantly if the biofuel production technology spreads out worldwide. The biofuels are established locally which immediately boosts the rural advancement as the innovation depends primarily on manual power. The fast increase of biofuel concurrently increases the production of these oil crops which stimulates the farming industry. The UK federal government has announced that it decreases the taxation for vehicles which are environmentally friendly. Additionally, the resilience 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 more secure to manage and less harmful 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 damaged in Asian countries for the plantation. The producing mechanism of these biodiesel certainly requires nonrenewable fuel sources which produces more carbon emissions. High preliminary investment is required for the biodiesel production.

Odour: Certain biofuel crop produces heavy odor those smells are generally unwanted 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 cost of these food crops. The huge amount of water is needed for correct yield, even for drought resistant jatropha curcas plants.

Availability: The biofuels are not offered in surplus so the diesel motor which are modified for biodiesel use may face problems. The most vehicles are not equipped for utilizing biofuels in the engines. Some biodiesel can not resist frost; it gets frozen in the chillier areas. It also increases the threat of microbial growth in the engine. Only couple of 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 nonrenewable fuel sources. Recently, the European scientist reported that the burning of biodiesel particularly corn and rapeseed produces more nitrous oxide.