Bioethanol has a number of advantages over conventional fuels.  Bioethanol is also biodegradable and far less toxic that fossil fuels.  Bioethanol fuel is mainly produced by the sugar fermentation process, although it can also be manufactured by the chemical process of reacting ethylene with steam.  Bioethanol has an energy content by volume of 21.  Bioethanol in the UK is set to get big boost as the country's first production plant will soon be operational.

Energy Supply

According to the International Energy Agency, cellulosic ethanol could allow ethanol fuels to play a much bigger role in the future than previously thought.  Dedicated energy crops, such as switchgrass, are also promising cellulose sources that can be produced in many regions of the United States.  Concerns relate to the large amount of arable land required for crops,[4] as well as the energy and pollution balance of the whole cycle of ethanol production.  Production of ethanol from sugarcane (sugarcane requires a tropical climate to grow productively) returns about 8 units of energy for each unit expended compared to corn which only returns about 1.

Petrol vs Bioethanol

Petrol has an energy content by volume of 31.  Petroleum diesel and petrol consist of blends of hundreds of different hydrocarbon chains.  Petroleum derived ethanol (synthetic ethanol) is chemically identical to bio-ethanol and can be differentiated only by radiocarbon dating.  Blends of 90% unleaded petrol and 10% fuel ethanol are commonly referred to as E10.  (2007:) There are only a few gas stations where E85 is sold, which is a 85% ethanol, 15% petrol mix.  China is promoting ethanol-based fuel on a pilot basis in five cities in its central and northeastern region, a move designed to create a new market for its surplus grain and reduce consumption of petroleum.  Another study has suggested that replacement of 100% petroleum fuel with E85 (a fuel mixture comprised of 85% ethanol and 15% petroleum) would significantly increase ozone levels, thereby increasing photochemical smog and aggravating medical problems such as asthma.

Bioethanol is a completely renewable and sustainable alternative fuel source.  Bioethanol is an important renewable energy source and  produces considerably lower emissions on combustion and it only releases the same amount of carbon dioxide as plants bound while growing, which helps to reduce greenhouse gas emissions. It is  a readily available, clean fuel additive that is used incombustion engines.  Bioethanol can be used as a fuel in a number of different ways: As a blend (ranging between 5% and 85%).  Bioethanol-blended petrol is similar to ordinary petrol but contains bioethanol.