Environmental Benefits of Biodiesel


Biodiesel does not contains any petroleum, but can be blended at any level with diesel to create a biodiesel blend. Biofuel can be used in compression-ignition (diesel) engines with no major internal modifications. Biodiesel is clean, simple to use, biodegradable, nontoxic, and essentially free of sulphur and aromatics.

Biodiesel is a CO2 (carbon) neutral alternative to diesel and fuel oil, and may reduce our dependence on fossil fuels. Many studies have also indicated that auto particle pollution is massively reduced with the use of biodiesel fuel, this is why it is used in urban buses in a number of large towns and cities, including Graz in Austria. Biodiesel also provides a cleaner combustion and act as lubricant for the engine, where it can replace the standard additives. In the event of environmental spill, biodiesel also breaks down faster and also reduces the risk of pollution from residential oil tanks. Biodiesel can however result in an increase in the emission of nitrogen oxides. The future uses of biodiesel should be considered in conjunction with various filter systems that are designed to reduce the amount of hazardous and toxic materials in car exhaust fumes.


When used in a conventional diesel engine, running Biodiesel shows a substantial reduction of unburned hydrocarbons, carbon monoxide, and particulate matter compared to emissions from Petroleum diesel fuel. In addition to this the exhaust gases of sulphur oxides and sulphates are essentially eliminated compared to diesel.  Of the major exhaust pollutants, both unburned hydrocarbons and nitrogen oxides are ozone or smog forming precursors. The use of biodiesel results in a substantial reduction of unburned hydrocarbons. The overall ozone forming potential of hydrocarbon emissions from biodiesel was nearly 50 percent less than that measured for diesel fuel.