How is biodiesel better for the environment?
Biodiesel is the only alternative fuel to have passed the rigorous EPA Tier I and Tier II health effects testing. That study found that B20 (20% biodiesel blended with 80% conventional diesel fuel) reduced total hydrocarbons by up to 30%, carbon monoxide up to 20%, and total particulate matter up to 15%.
Even using a 2% blend in on-road diesel fuel will reduce carbon monoxide emissions by more than 25 million pounds annually, reduce ozone forming hydrocarbon emissions by almost 4 million pounds annually, and reduce acid rain-causing sulfur dioxide emissions by more than 3 million pounds annually.
Biodiesel is less toxic than table salt and biodegrades faster than sugar. B100 exhaust contains no benzene, sulfur or formaldehyde, and reduces greenhouse gases by nearly 80% as compared to petroleum diesel.
Biodiesel is safer to breathe, and reduces the cancer risk of diesel exhaust by 94% when using B100 and 27% when using B20. Instead of the stench of diesel exhaust, biodiesel gives off an odor described as that of french fries, popcorn, or apple pie.