American biofuels producer Gevo has signed its first long-term supply agreement for its alcohol-to-jet fuel (ATJ) renewable aviation fuel with aviation fuel supplier Avfuel Corp.

The agreement comprises two phases. In the first phase, Gevo would supply Avfuel with ATJ from its Silsbee, Texas, hydrocarbon processing facility, with a capacity of 70,000 gallons/year of hydrocarbon products consisting of 50% ATJ, Gevo said on 21 June.

During the first phase, Gevo planned to construct a larger scale facility at its existing ethanol and isobutanol production plant in Luverne, Minnesota.

Upon the completion of the Luverne facility, the second phase of the agreement – lasting for five years – would begin, with Gevo ramping up ATJ deliveries to 1M gallons annually.

When blended with conventional jet fuel, the ATJ would produce millions of gallons a year of ASTM D1655 standard compliant jet fuel, Gevo said.

In addition to jet fuel, every 1M gallons of ATJ would also produce roughly 9,000 tonnes of animal feed and protein from feedstocks such as corn that Gevo expected to sell to the animal feed supply chain.

During the ATJ production process, Gevo fractionates grain to produce protein and animal feed while using the residual carbohydrate portion of the grain for fermentation into isobutanol, which is further processed into ATJ.