Biofuels is the appealing 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 etc by yeast fermentation. Wood products can also be converted into Biofuels.

The acquired Biofuels from these products contains both advantages and drawbacks.

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 deposits, and it is eco-friendly and pure fuels so it benefits autos. It minimizes the green home considerably 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 provides carbon emission savings approximately 80%. Recently, UK Government publication specified that biofuels can reduce 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 innovation spreads worldwide. The biofuels are established locally which immediately enhances the rural development as the technology depends mainly on manual power. The quick boost of biofuel concurrently increases the production of these oil crops which stimulates the farming industry. The UK federal government has revealed that it decreases the taxation for automobiles which are eco-friendly. Additionally, the toughness of the engine increases while utilizing these combustible fuels in engines.

Renewability and Degradable: The biofuels are made from crops which are renewable and it is biodegradable and safer to manage and less dangerous than fossil fuels.

Disadvantages of Biofuels:

Environmental Alarm: Adapting more lands for planting crops for biofuel extraction will tossed away more environments. More forests have been damaged in Asian nations for the plantation. The producing system of these biodiesel undoubtedly requires nonrenewable fuel sources which produces more carbon emissions. High initial financial investment is required for the biodiesel production.

Odour: Certain biofuel crop produces heavy odor those smells are typically unfavorable and biofuels plants can not be setup near the large communities.

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 big quantity of water is required for correct yield, even for dry spell resistant jatropha curcas plants.

Availability: The biofuels are not readily available in surplus so the diesel motor which are customized for biodiesel use may deal with 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 colder locations. It likewise increases the danger of microbial development in the engine. Only few gas stations offer this biofuels and it is impossible to transfer the biofuels using pipelines.

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