(Oklahoma Farm Bureau) ... The Harvard team's recent findings underscore the need to power more of our transportation system with non-petroleum-based fuels, like ethanol. The research team looked specifically at polluted areas beleaguered by fine particulate matter 2.5 (PM2.5). Motor vehicle emissions are a primary source of PM2.5, which are tiny particles or droplets in the air that are two- and one-half microns or less in width (there are about 25,000 microns in an inch). The widths of the larger particles in the PM2.5-size range is some thirty times smaller than the width of a human hair. Smaller particles could fit on the head of a pin in the thousands.
COVID-19 is notable for its ability to aggressively attack the human respiratory system, especially the lungs. Unsurprisingly, pre-existing conditions which depress lung function are considered risk factors for infected patients, and are likely to contribute to the between 100,000 and 240,000 pandemic-associated American deaths currently predicted by federal scientists.
The Harvard particulate matter study sought to shed further light on environmental contributions to COVID-19's impact by exploring the potential connection between recorded deaths attributed to the coronavirus and long-term exposure to air pollution - known to be correlated with the same pre-existing conditions that increase the risk of death from COVID-19.
Using data collected from approximately 3,000 U.S. counties, which contain 98-percent of the population, the research team found that an increase of only one microgram per cubic meter in PM2.5 is associated with a 15-percent increase in the COVID-19 death rate. Furthermore, the research shows that a small increase in long-term exposure to PM2.5 leads to a large increase in the COVID-19 death rate, with the magnitude of increase 20 times that observed for PM2.5 and all-cause mortality.
Social distancing, self-quarantine and the closure of businesses, schools and other gathering places brought with them a significant drop in travel by car, with a corresponding decline in PM2.5 emissions by motor vehicles. However, the Harvard team's findings heavily underscore the need to more fully address the incomplete combustion of aromatic hydrocarbon molecules in gasoline, which is a major source of PM2.5.
In addition to reducing emissions of particulate matter, running passenger vehicles on fuel blends whose octane source is a higher percentage of ethanol also cuts down on the use of the dirtier-burning benzene, toluene and xylene to boost the octane in gasoline. It is undeniable that on multiple fronts, burning ethanol results in better overall air quality than when cars burn conventional gasoline.
The findings by the Harvard team add critical support to the message long conveyed to policy makers by SfL (Solutions from the Land) and other biofuel advocates: that ethanol represents a major step in progress towards farm production that is sustainable for the environment and human health. Ethanol could also offer additional income to a farm sector hammered in recent years by flooding, droughts, and federal trade disputes that have brought severe damage to previously strong U.S. farm trade partnerships. Instead, market effects and policy uncertainty surrounding the COVID-19 pandemic is shrouding the farm sector's future in ways not seen in decades.
(In a related development, EPA Administrator Andrew Wheeler said Tuesday his agency will not tighten a regulation covering industrial soot emissions, including power plants, another big source of PM2.5. The regulation came up for review before the coronavirus outbreak, but Wheeler claimed the scientific evidence was insufficient to require more restrictions on industry-generated particulate matter.)
The Harvard team's findings reinforce the critical importance attributed to ethanol and biofuels: Cleaner sources of transportation fuels save lives. Trump's EPA must stop the efforts to scale back the role of ethanol in today's transportation fuels, and must, at the very least, drop efforts to gratuitously hand out to refineries hardship exemptions to the Renewable Fuel Standard that are costing American corn growers and producers of other feedstocks valuable and much needed markets for the renewable fuels that growers generate.
The U.S. farm sector is in a tenuous position, complicated by what could be a free-fall stemming from the ongoing COVID-19 outbreak. The economic protection of the ethanol industry should be of paramount concern to the White House. The Harvard study results underscore the importance of sustaining the contributions that biofuels make to this nation, including protecting health and saving lives. READ MORE
Exposure to air pollution and COVID-19 mortality in the United States (MedRxIV)
DIESEL TRUCKS HAVEN’T STOPPED ROLLING DURING THE PANDEMIC, AND NOW THE AIR IS CLEANER. WHAT GIVES? (Diesel Technology Forum)
New Research Links Air Pollution to Higher Coronavirus Death Rates (New York Times)
New study says more polluted cities have higher COVID-19 death rates (NGV Journal)
'Bogus analysis': Trump-appointed EPA advisers criticize study linking air pollution and coronavirus deaths (Washington Examiner)
Biofuel groups bash adviser over dismissal of virus study (E&E News)
SDFU Signs Letter Calling out EPA for Failure to Protect Americans (South Dakota Farmers Union)
Boost alternative fuels to clean air and help fight COVID-19 (Daily Herald)
Vehicle emission declines decreased deaths, study finds (Associated Press)
Health benefits of decreases in on-road transportation emissions in the United States from 2008 to 2017 (Proceedings of the National Academy of Sciences)
Excerpt from Diesel Technology Forum: Fine particles come from many sources including forest fires, woodstoves and agricultural dust are the leading source of emissions followed power generation and industrial boilers. The U.S. fleet of diesel trucks and gasoline cars come in at #11 and #16 respectively, according to emissions inventory data compiled by the U.S. Environmental Protection Agency.
Today thanks to these new emissions control systems, brake dust and tire wear are the bigger sources of emissions than 2011 and newer near-zero emissions big-rig trucks.
Final food for thought... As we contemplate the post-COVID-19 era, some are calling for “green recovery” measures and policies to shift investments in transportation fuels and technologies to all electric, despite that the commercial availability of electric trucks is in a very nascent stage. EPA estimates that the fine particle reduction of replacing an old diesel truck with either a new diesel truck or a new all-electric truck delivers roughly the same air quality impact. There are many different shades of green, and we are going to need all of them to recover our economy and quality of life. READ MORE
Excerpt from Washington Examiner: The advisers to the Trump administration, including the chair of the committee advising the agency on air pollution, say they are skeptical of the Harvard study’s methodology and conclusions. Those same appointees have previously raised questions about the strength of connections between fine particle pollution and health effects. READ MORE
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