Because its disadvantages far outweigh its advantages. ULSD motors require expensive conversions to run on biodiesel (contrary to what seems to be popular belief, you don't just pump biodiesel into any ULSD motor without conversion), and it doesn't perform as well as ULSD #2 does.
Yes.
Believe it or not it is used in makeup.Also I think there is some serious effort to try and use it for biodiesel. This is not a success yet however.
the biodiesel should be used in the diesel engine, and there are some biodiesel motorbike has been produced such BWM http://www.doinggroup.com/
Biodiesel is not used widely because it requires a lot of organic matter, which is not always readily available.
the biodiesel is produced from used cooking oil, animal fat, etc, the jatropha seed oil is best raw material oil for making biodiesel.
Yes
Biodiesel is a more earth friendly fuel for vehicles if it is combined and used properly. Typically biodiesel is made from vegatable oil, soybeans(in the United States) and animal fats.
planting
Soybeans can be used to produce biodiesel fuel.
Tallow is rendered mutton, beef or other bovine fat. Biodiesel can be made from tallow using similar methods and processes to plant oils. The resulting biodiesel has a higher cetane number than plant oil biodiesel meaning a cleaner and more efficient fuel.
BioDiesel is the only "green" fuel that can be used.
Biodiesel is composed of Fatty Acids with Methyl, Propyl or Ethyl Esters. Some common forms of biodiesel are Methyl Linoleate and Ethyl Stearate. ==Methyl Linoleate== Chemical Formula: C19H34O2 ==Ethyl Stearate== Chemical Formula: C20H40O2