Gevo: ASTM subcommittee approves additional route to ATJ fuel

By Gevo Inc. | April 02, 2018

Gevo Inc. announced today that late last week an ASTM International subcommittee voted in favor of revising specification D7566 (Standard Specification for Aviation Turbine Fuel Containing Synthesized Hydrocarbons) to include ethanol in addition to isobutanol; and more importantly, increase the approved blend levels from 30 percent to 50 percent (percentage of alcohol-to-jet fuel (ATJ) allowed when blended with petro-based jet fuel).  These revisions to the D7566 specification will now go to the full ASTM International for final approval which is expected later this year.

“Gevo’s proprietary ATJ process technology applies to ethanol as well as isobutanol,” said Patrick Gruber, CEO of Gevo. “At Gevo, we appreciate the optionality that is created by adding ethanol to the list of acceptable feedstocks for ATJ. Our demonstration plant located at South Hampton Resources in Silsbee, Texas, has the unit operations already installed to convert ethanol into jet fuel, however to date we have been producing higher value added products from Silsbee. That said, our ATJ technology could leverage certain, already installed ethanol capacity, depending on the GHG footprint, such as our Luverne plant, and only require a buildout of the hydrocarbon section of the plant. Our Luverne plant uses documented ‘low carbon corn,’ and that puts the Luverne plant in the position of being able to take advantage of isobutanol and/or ethanol to ATJ as we build out the Luverne Plant for hydrocarbons.”

“We are pleased that the ATJ blend levels were approved by the ASTM Sub-Committee to move to 50 percent up from 30 percent. This will be important in the future as the airline industry tries to meet its greenhouse gas reduction goals,” Gruber continued.