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Gevo one step closer to full ASTM Alcohol-to-Jet approval

US-based advanced renewable fuel and biochemical platform technology company, Gevo, Inc., has announced that late last week an ASTM International Sub-Committee voted in favour of revising specification D7566 (Standard Specification for Aviation Turbine Fuel Containing Synthesized Hydrocarbons) to (i) include ethanol in addition to isobutanol; and (ii) increase the approved blend levels from 30 percent to 50 percent alcohol-to-jet fuel (ATJ) allowed when blended with petroleum-based jet fuel.

According to a statement, these revisions to the D7566 specification, the “ASTM Revisions”, to approve ethanol as an additional Alcohol-to-Jet (ATJ) fuel and increase approved blend levels to 50 percent 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. 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, TX 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 greenhouse gas (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 GHG reduction goals, said Dr Patrick Gruber, CEO, Gevo.

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