Ethanol Blends Saving Lives Through Reduced Vehicle Emissions

The research team leading this effort included notable refinery and fuel emission experts who looked at hundreds of earlier studies on emissions and ethanol. A glaring error, according to the authors, is that these studies assume a standard fuel is created for testing emissions. However, the research found that test fuels rarely resemble real-world fuels, similar to what consumers purchase.

The paper found that when simply adding ethanol to fuel, it reduces the most carbon intensive and carcinogenic fuel additives called aromatics. Replacing these benzene-based additives with ethanol directly reduces particulate matter (PM) and NOx emissions, both of which are ozone precursors and represent significant health risks to the public. The discrepancy the authors found in the previous studies centered on the fact that test fuels add ethanol and aromatics together to raise octane, while oil refiners actually reduce aromatics to utilize ethanol as an octane enhancer. Comparing a baseline E0 fuel to E10 and E15 shows the ethanol blends are significantly better when real world fuel blending conditions are used.

“What this new paper makes clear is the aromatic reduction resulting from increased ethanol volumes provides significant health benefits from lower particulate emissions,” said Urban Air President Dave VanderGriend. “The Urban Air Initiative and its supporters in the ethanol industry call on the EPA to look at this research and consider the facts uncovered in this paper as it prepares to make regulatory decisions about ethanol blended fuels.”

And, in light of the current health crisis, the fact that regions suffering from air pollution are experiencing higher cases of the COVID-19 virus suggests reducing emissions needs to be a national priority for the EPA, according to VanderGriend. READ MORE

Excerpt from Metropolitan Energy Center: In establishing the Urban Air Initiative, our objective was to improve fuel quality, while recognizing that eliminating the internal combustion engine is neither an immediate nor practical strategy to reducing pollution. With more than 260 million cars registered in the U.S., we will continue to rely on gasoline for the foreseeable future — but we can identify the most harmful components of gasoline and replace them. Ethanol, for example, is a superior substitute for the family of benzene octane gas additives that produce microscopic particulates and are linked to a range of respiratory and other ailments.

In naming our organization the Urban Air Initiative, we did so knowing urban areas are disproportionately subject to harmful auto emissions, and that they are where the most help is needed.

And who lives in urban areas? The very minority groups feeling the brunt of the coronavirus crisis. New York City reports that inner city minorities are experiencing the highest fatalities from COVID-19, and Midwest cities such as Chicago and Milwaukee are similarly affected. So an obvious question is whether these people were predisposed to getting sick by virtue of simply living in urban areas. Our research has always suggested that is the case, but a new study from the Harvard School of Public Health is one of many research efforts that come to this conclusion.

The most important finding of the study is that people living in counties in the U.S. that have experienced a higher level of air pollution as measured by the Environmental Protection Agency over the past 15 to 17 years have a substantially higher COVID-19 mortality rate. And we believe pollution is much, much worse than what the EPA measures. Particulates associated with coal fired power plants or diesel fuel are just part of the story. Much smaller “ultra-fine” particulates that are literally microscopic are essentially unregulated and unreported.

In our correspondence with the EPA, the agency has conceded its modeling fails to capture these tiny particles and their precursors. It has long been understood that fine particulates linger in the air and travel great distances, with data showing anyone within 300 yards of a congested roadway is exposed. Now imagine the impact in an urban area, be it midsize Kansas City or mega-size New York, where pedestrians are within mere feet of automobiles on every corner and tall buildings trap the emissions. Now enters the coronavirus, attacking the same respiratory system that has long been compromised by near-roadway exposure. READ MORE