Application Note: Sulfur in Ethanol for Tier 3 Compliance
20 February 2019

The use of biofuels has been growing over the past decade as the industry adds renewable sources to the commercial product mix. This trend has seen the rise of complete fuel products such as biodiesel, as well as bioethanol blend stocks for gasoline. Most automobiles in the U.S. are able to run on gasoline with a 10% mixture of fuel ethanol (E10). Since 2014, over half of the new vehicles produced by Chrysler, Ford, and General Motors can use E85, which is a mixture of 15% gasoline and 85% fuel ethanol. The growth in U.S. production of Fuel Ethanol from roughly 800k barrels per day in 2013 to over 1M barrels per day in 2018
highlights the strong demand for these products. Since Jan 1st, 2017, ethanol that is blended with gasoline must meet the 10 parts per million (ppm) standard for sulfur content on a per gallon basis.