Average Biodiesel Emissions Compared to Petroleum Diesel

Emission Type                           B100                          B20
Total Unburned Hydrocarbons      67% reduction           20% reduction
Carbon Monoxide                          48% reduction           12% reduction
Carbon Dioxide                              75% reduction           15% reduction
Particulate Matter                           47% reduction       18% reduction
Nitrous Oxides                              10% increase           2% increase
Sulfates                                      100% reduction           20% reduction*

Chart Taken from www.biodiesel.org