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fuel made from natural, renewable sources, such as new and used vegetable oils and animal fats, for use in a diesel enginediesel engine,
type of internal-combustion engine invented by the German engineer Rudolf Diesel and patented by him in 1892. Although his engine was designed to use coal dust as fuel, the diesel engine now burns fuel oil.
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. Biodiesel has physical properties very similar to petroleum-derived diesel fuel, but its emission properties are superior. Using biodiesel in a conventional diesel engine substantially reduces emissions of unburned hydrocarbons, carbon monoxide, sulfates, polycyclic aromatic hydrocarbons, nitrated polycyclic aromtic hydrocarbons, and particulate matter. Diesel blends containing up to 20% biodiesel can be used in nearly all diesel-powered equipment, and higher-level blends and pure biodiesel can be used in many engines with little or no modification. Lower-level blends are compatible with most storage and distribution equipment, but special handling is required for higher-level blends.

Biodiesel is made from oils or fats, which are hydrocarbons. Fresh soybean oil is most commonly used, although biodiesel can be made from mustard seed oil or waste vegetable oil (such as used oil from restaurant deep fryers). These hydrocarbons are filtered and mixed with an alcohol, such as methanol, and a catalyst (sodium hydroxide or potassium hydroxide), resulting in a chemical reaction whose major products are the biodiesel fuel and glycerolglycerol,
or 1,2,3-propanetriol
, CH2OHCHOHCH2OH, colorless, odorless, sweet-tasting, syrupy liquid. Glycerol is a trihydric alcohol. It melts at 17.
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4 shows the brake specific fuel consumption of the different blends of biodiesel and conventional diesel fuel, indicating that the brake specific fuel consumption (b.s.f.c) for the different blends of bio diesel fuels.
Bio Diesel is prepared at all the powers and the yield of bio diesel is compared.
Teams devised a number of hybrid-based solutions including through-the-road parallel and series hybrid solutions, complete with regenerative braking and high-load electrical assist, with many using bio diesel or ethanol-based fuels to power their vehicles.
NORDIC BUSINESS REPORT-27 March 2006-Neste Oil and OMV plan next-generation bio diesel fuel plant in Austria(C)1994-2006 M2 COMMUNICATIONS LTD
From May the city council will operate a litter-collection vehicle, which runs on both electricity and eco-friendly bio diesel.
Saragih said palm oil could be used to produce not only cooking oil, soap, cosmetics and medicines, but could be used to produce bio diesel oil With the crude oil price soaring to around US$ 50 per barrels at present bio diesel from palm oil will be competitive, he said.
Following trials and discussions with vehicle manufacturers, Durham County Council, which uses almost one million litres of diesel fuel each year in its fleet of vans and lorries, has changed its fuel supply from ultra low sulphur diesel to the new Bio Diesel.
"It is warm down there and you have a year-round use for it because the bio diesel would not be affected by the cold."
Rix will increase the number of bio diesel stocking sites to eleven by the end of September across Yorkshire and Lincolnshire.
NORDIC BUSINESS REPORT-18 October 2005-Neste Oil Corporation lays foundation stone for new bio diesel plant(C)1994-2005 M2 COMMUNICATIONS LTD
A 12 month trial showed the bio diesel emitted lower levels of pollution and improved engine performance.