če imaš diesla z malo starejšo mašino (hdi nikakor ne pride v poštev), se lahko znebiš levjega dela svoje krivde, tako da kuriš biodiesel. poleg tega pa še prihraniš: cena pri naših privatnikih se giblje okoli 160 SIT pa tudi ceneje. jaz že delam plac za sode
* Biodiesel reduces emissions of carbon monoxide (CO) by approximately 50% and carbon dioxide by 78% on a net lifecycle basis because the carbon in biodiesel emissions is recycled from carbon that was in the atmosphere, rather than the carbon introduced from petroleum that was sequestered in the earth's crust. (Sheehan, 1998)
* Biodiesel contains fewer aromatic hydrocarbons: benzofluoranthene: 56% reduction; Benzopyrenes: 71% reduction.[citation needed]
* Biodiesel can reduce by as much as 20% the direct (tailpipe) emission of particulates, small particles of solid combustion products, on vehicles with particulate filters, compared with low-sulfur (<50 ppm) diesel. Particulate emissions as the result of production are reduced by around 50%, compared with fossil-sourced diesel. (Beer et al, 2004).
* Biodiesel produces between 10% and 25% more nitrogen oxide NOx tailpipe-emissions than petrodiesel. As biodiesel has a low sulphur content, NOx emissions can be reduced through the use of catalytic converters to less than the NOx emissions from conventional diesel engines. Nonetheless, the NOx tailpipe emissions of biodiesel after the use of a catalytic converter will remain greater than the equivalent emissions from petrodiesel. As biodiesel contains no nitrogen, the increase in NOx emissions may be due to the higher cetane rating of biodiesel and higher oxygen content, which allows it to convert nitrogen from the atmosphere into NOx more rapidly. Debate continues over NOx emissions. In February 2006 a Navy biodiesel expert claimed NOx emissions in practice were actually lower than baseline. Further research is needed.
* Biodiesel has higher cetane rating than petrodiesel, which is insignificant in terms of emissions and performance.
* Biodiesel is biodegradable and non-toxic - the U.S. Department of Energy confirms that biodiesel is less toxic than table salt and biodegrades as quickly as sugar. (See Biodiesel handling and use guidelines)
* In the United States, biodiesel is the only alternative fuel to have successfully completed the Health Effects Testing requirements (Tier I and Tier II) of the Clean Air Act (1990).
več:
http://en.wikipedia.org/wiki/Biodiesel