Biofuels is the promising source of energy for future fuel needs. Biodiesel can be established from growing plants which naturally contains oil particularly jatropha curcas, 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 products can also be converted into Biofuels.


The gotten Biofuels from these products consists of both benefits and disadvantages.


Advantages of Biofuels:


Ecological Benefits: The primary 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 good for autos. It decreases the green house substantially compared to other fossil fuels.


First generation biofuels can save carbon emissions about 60% compared to fossil fuels whereas the second generation biofuels are much better than very first generation fuels. It offers carbon emission cost 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 cost reduces considerably if the biofuel production technology spreads worldwide. The biofuels are developed locally which instantly improves the rural development as the innovation depends generally on manual power. The rapid boost of biofuel simultaneously increases the production of these oil crops which promotes the agricultural market. The UK government has announced that it minimizes the tax for automobiles which are eco-friendly. Additionally, the sturdiness of the engine increases while using these combustible fuels in engines.


Renewability and Degradable: The biofuels are made from crops which are renewable and it is eco-friendly and safer to deal with and less hazardous than fossil fuels.


Disadvantages of Biofuels:


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


Odour: Certain biofuel crop produces heavy odor those odours are normally unwanted and biofuels plants can not be setup near the big 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 may raise the cost of these food crops. The big amount of water is required for correct yield, even for drought resistant jatropha curcas plants.


Availability: The biofuels are not available in surplus so the diesel motor which are modified for biodiesel use might face problems. The most autos are not geared up for utilizing biofuels in the engines. Some biodiesel can not resist frost; it gets frozen in the colder areas. It also increases the risk of microbial growth in the engine. Only couple of gas stations provide this biofuels and it is difficult to transport the biofuels using 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 particularly corn and rapeseed produces more laughing gas.