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BioDiesel - Fuel: Biodiesel has received increasing attention during the last several years because it is perceived to be an environmentally friendly fuel. In Europe, it is primarily produced from rapeseed oil, and in the United States, it is derived from soybean oil. Biodiesel is produced by chemically reacting an animal fat or vegetable oil with an excess of alcohol (usually methanol) in the presence of a catalyst to produce alkyl monoesters from the fatty acids present in the oil. These esters are usually referred to as biodiesel. They may be used neat or in blends with diesel fuel.
| Biodiesel is nontoxic and biodegradable, and it tends to reduce soot emissions. When used in blends with diesel fuel, the nontoxicity and biodegradability advantages disappear but it still provides lower emissions. Carbon monoxide, unburned hydrocarbons and the carbon portion of particulate are generally lower with biodiesel but NOx and the soluble portion of the particulate increase.
Biodiesel cost fluctuates with the commodity price of the oilseed feedstock, which represents the primary production expense. In Europe, some countries have provided tax incentives to biodiesel that make it price competitive with diesel fuel. In the United States, these tax incentives are not available and biodiesel is four to six times more expensive than diesel fuel.
Biodiesel can be used in existing diesel engines with a minimum of changes. Some elastomers are not compatible with esters, and concerns have been expressed about interactions with the lubricating oil and the thermal and oxidative stability of biodiesel. | | :: Recommended Reading / Videos :: | | | |
| :: Recommended material containing aditional info about BioDiesel - Fuel :: |
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