(redirected from Bio-diesel)
Also found in: Dictionary, Medical, Acronyms.


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.
..... Click the link for more information.
. 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.
..... Click the link for more information.

Mentioned in ?
References in periodicals archive ?
Current expectations are for the production of approximately 650,000 gallons of bio-diesel per year with this plant which at today's current market value should be worth close to $3 million in revenues.
Buchan said the council aim to have 25 vehicles running on the bio-diesel by the end of the year.
A 30 percent blend indicates that the fuel includes 30 percent bio-diesel and 70 percent conventional diesel.
The result is bio-diesel that is not only practical as it uses waste material, but also good for the environment because it helps rid the environment of carbon deposits.
Bio-diesel is becoming more widely available, and new green regulations mean all fuel used for road transport will have to contain a five per cent "bio-fuel component" from April.
The one-year pilot project will test the effectiveness and economics of using bio-diesel fuel versus conventional diesel in vehicles.
The 35MW power Milford Haven plant would have produced enough energy to power the equivalent of 60,000 homes and would also have made about 200,000 tonnes of bio-diesel annually, for the local refineries.
NaREC and Yanmar have reached to the Joint Research Agreement concerning the application of bio-diesel fuel techniques this September and became the first joint research partners in the UK.
Bio-diesel provides alternate fuel vehicle credits and reduces diesel fuel consumption.
Gateshead Council's 360-strong group of vehicles, from meals on wheels vans to bin trucks, will switch to using 20% bio-diesel next month.
The bill would permanently extend tax breaks for ethanol and bio-diesel production.
The extension will allow for further consideration of the potential impact of bio-diesel blends in the TxLED program.