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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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Ian Whyley, general manager for the chemicals and bio-diesel business at BIP, said: ' We're working with NISP on a number of areas to develop the business.'
Cars, trucks and boats with diesel engines can use bio-diesel, a mix of 80 percent petroleum diesel and 20 percent vegetable oil, called B-20.
The Kyoto municipal government estimates that by using the bio-diesel fuel, Kyoto will be able to reduce its carbon dioxide output by around 4,000 tons a year compared with if it used regular diesel oil.
Every five litres of oil produces four litres of bio-diesel.
AEDB through a consultative process identified the barriers to bio-diesel feedstock cultivation in Pakistan, and is taking actions to remove these barriers.
has said that the government is paying full attention to develop the alternative fuels such as ethanol and bio-diesel to overcome the energy crisis in the country.
PESHAWAR, June 29, 2009 (Balochistan Times) -- A meeting regarding the cultivation of Bio-Diesel Plants on 2.5 million acres barren land in NWFP was held under the chairmanship of Provincial Minister for Agriculture at his office Peshawar on Monday morning.
Auto Business News-27 October 2008-Volvo Bus Australia to use 30 percent bio-diesel in nine- and 12-litre engine buses(C)2008 ENPublishing -
Trading Standards officers in Staffordshire have received a string of calls from angry motorists facing huge repair bills after filling up with bio-diesel made from vegetable oil.
A family of patented HDPE resins for automotive fuel tanks boasts enhanced resistance to bio-diesel fuels.
is supplying a soybean oil product called B99.9 Soy Bio-diesel to a City Transit bus on a trial basis.
A taxi driver has warned motorists to be wary of running their cars on cheap bio-diesel after he was landed with a hefty engine repair bill.