Biofuels is the appealing source of energy for future fuel needs. Biodiesel can be established 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 also be transformed into Biofuels.

The obtained Biofuels from these products consists of both benefits and downsides.

Advantages of Biofuels:

Ecological Benefits: The main expectation of using 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 excellent for automobiles. It decreases the green home substantially compared to other nonrenewable fuel sources.

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

Economical: The biofuel's price decreases considerably if the biofuel production innovation spreads worldwide. The biofuels are established locally which automatically improves the rural advancement as the technology depends mainly on manual power. The fast boost of biofuel concurrently increases the production of these oil crops which promotes the agricultural industry. The UK government has actually announced that it minimizes the taxation for automobiles which are environment-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 eco-friendly and more secure to handle and less hazardous than fossil fuels.

Disadvantages of Biofuels:

Environmental Alarm: Adapting more lands for planting crops for biofuel extraction will tossed away more habitats. More forests have been destroyed in Asian countries for the plantation. The producing system of these biodiesel certainly requires fossil fuels which produces more carbon emissions. High initial investment is needed for the biodiesel production.

Odour: Certain biofuel crop produces heavy odor those smells are typically 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 may raise the price of these food crops. The big amount of water is required for correct yield, even for dry spell resistant Jatropha plants.

Availability: The biofuels are not readily available in surplus so the diesel motor which are modified for biodiesel usage might face problems. The most autos are not equipped for utilizing biofuels in the engines. Some biodiesel can not resist frost; it gets frozen in the colder areas. It also increases the danger of microbial growth in the engine. Only couple of gas stations use this biofuels and it is impossible to carry the biofuels using pipelines.

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