Biodiesel emissions compared to conventional Diesel
Emissions
B100 (100% biodiesel)
B20 (20% biodiesel)
Regulated Emissions
Total Unburned Hydrocarbons -93 % -30 %
Carbon Monoxide -50 % -20 %
Particulate Matter -30 % -22 %
Nox +13 % +2 %
Non regulated emissions
Polycyclic Aromatic Hydrocarbons (PAH) -80 % -13 %
NPAH (Nitrated PAH) -90 % -50 %
Life cycle emissions
Carbon Dioxide (LCA) -80 %  
Sulphur Dioxide (LCA) -100 %  
Source: Planning Commission (2003)