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tailpipe emissions
Biodiesel reduces tailpipe particulate matter (PM), hydrocarbon (HC), and carbon monoxide (CO) emissions from most modern compression ignition engines.
The US Environmental Protection Agency (EPA) released a comprehensive technical report of biodiesel emissions data that provides a government-validated reference point for biodiesel emissions reductions data. The chart below provides the results of the EPA report for B100 and B20.
| Biodiesel Emissions Compared with Petroleum Diesel (according to 2002 EPA Biodiesel Technical Report) | ||
| Emission Type | B100 | B20 |
Regulated
| Total Unburned Hydrocarbons | -67% | -20% |
| Carbon Monoxide | -46% | -12% |
| Particulate Matter | -47% | -12% |
| Nox | +5% | +2% |
Non-Regulated
| Sulfates | -100% | -20% |
| PAH (Polyaromatic Hydrocarbons) | -80% | -13% |
| NPAH (Nitrous PAH) | -90% | -50% |
| Ozonated potential of speciated HC | -50% | -10% |
emissions reductions 
lifecycle GHGs
Biodiesel also significantly reduces life-cycle carbon dioxide (CO2) emissions in comparison with diesel fuel generation and use. Depending on the feedstock used, a B20 blend will reduce lifecycle GHGs on average by 15.66%. Contact us for further information.
GHG Offset Credit accumulation potential accrues to some biodiesel industry participants for voluntary and mandated emissions reductions. Depending on the feedstock used, a B20 blend will reduce GHG LFEs on average by 15.66%. Contact us for further information.
particulate matter (PM)
Breathing PM is a proven human health hazard. PM emissions testing reveal that the use of biodiesel is 47% lower than overall PM emissions from petroleum-based diesel.
hydrocarbons
Hydrocarbon emissions contribute to local smog and ozone. The total hydrocarbon emissions of biodiesel were 93% lower and speciated hydrocarbon emissions are as much as 50% lower than those of standard diesel fuel.
sulfur
Sulfur is a major component of acid rain. The exhaust emissions of sulfur oxides and sulfates are essentially eliminated with 100% biodiesel (B100).
nitrogen oxides
NOx emissions also contribute to smog and ozone. Canada is at the forefront of NOx reduction technologies. Importantly, biodiesel reacts differently to an open flame than it does in a compression engine, resulting in a significant reduction of NOx in boiler and home heating applications.
carbon monoxide
Exhaust emissions of the poisonous gas carbon monoxide are 50% lower with biodiesel than the carbon monoxide emissions from standard diesel.
