Biodiesel History Chemistry Pros and cons Links
Advantages of Biodiesel:
Biodiesel gives off less new carbon monoxide and carbon dioxide, since
the gasses released during combustion are essentially the gasses
absorbed from the atmosphere whilst the plant growing- unlike the
gasses released by burning petrodiesel, which was carbon previously
Biodiesel is a better lubricant than petrodiesel, so it helps to extend the working life of engines.
Biodiesel gives fewer particulates when burnt, reducing risks from respiratory problems.
Biodiesel is easier to ignite than petrodiesel, meaning more complete, efficient combustion.
Biodiesel is more expensive to produce.
If Biodiesel was used on a wider scale, more plants for oil would be
grown as a cash crop. This may reduce the amount of food grown to feed
the population in less economically developed countries.
Biodiesel gels at higher temperatures than petrodiesel, so tanks require heating in cooler climates.
Biodiesel degrades rubber hoses used on older engines.
Image at top of page modified from image at Wikkimedia Commons, used under GNU Free documentation Licence
Antony Walters, University of Bristol