Wisconsin study on ethanol’s carbon emissions may be flawed, researchers say

Source: By OPIS • Posted: Wednesday, March 23, 2022

A recent University of Wisconsin study that found carbon emissions from corn-based ethanol are as great or possibly well above those from conventional gasoline may have relied on “biased” methodology, a group of researchers said Monday. The study’s methodological choices led to “questionable” projections on land use change (LUC) linked to the Renewable Fuel Standard (RFS) program, the review group, which included researchers from the U.S. Department of Energy’s (DOE) Argonne National Laboratory (ANL), Purdue University¬†and the University of Illinois, said in a report. The study, “Environmental Outcomes of the US Renewable Fuel Standard” — published in February in the Proceedings of the National Academy of Sciences by a research team led by Tyler Lark, a scientist at the school’s Great Lakes Biodiversity Research Center — drew immediate backlash from the ethanol industry, which criticized data that the team used to reach its conclusions.