Biobutanol: will those 16 percent blending waivers hold up?

In Illinois, a study finds that Regulatory hurdles hinder the commercialization of emerging liquid biofuels.  The authors focused on biobutanol, arguing that regulatory innovations are needed to keep pace with technological innovations in the biofuels industry.

One example cited was though it might be legal to blend 16 to 17 percent biobutanol with ordinary gasoline based on pre-existing waivers granted in the 1980s, there is a great deal of uncertainty as to whether the EPA would allow this.