Honeywell and GranBio Technologies will combine Honeywell’s ethanol to jet (ETJ) technology with GranBio’s cellulosic ethanol AVAP technology to produce carbon neutral sustainable aviation fuel (SAF) from biomass residues at GranBio’s demonstration plant, which will open in 2026.

GranBio’s AVAP aims to enable worldwide net zero SAF production by utilizing abundant, low-cost biomass feedstocks and diversification of income streams through value-added products beyond SAF, providing significant cost advantage as compared to other SAF producers.

AVAP process converts biomass to pure low-cost, low-carbon-intensity sugars, lignin, and nanocellulose. The cellulosic sugars are converted to both SAF, through Honeywell’s ETJ technology, and biochemicals, through a separate process.

Using forest biomass-derived ethanol from the AVAP process, jet fuel produced from Honeywell’s ethanol to jet fuel process can reduce greenhouse gas (GHG) emissions to net zero on a total lifecycle basis, compared to petroleum-based jet fuel.

“Combining our biorefinery expertise with Honeywell experience in developing and scaling fuel technologies will help ensure SAF supply goals, while supporting GranBio’s mission to provide integrated value chain solutions throughout the world for net zero SAF from biomass,” said Bernardo Gradin, GranBio CEO. “The AVAP technology has great potential, depending on feedstock and plant configuration to allow carbon negative SAF with current life cycle analysis.”

“GranBio’s low carbon feedstock coupled with Honeywell’s SAF expertise will help decarbonize air travel,” said Barry Glickman, vice president, general manager, Honeywell Sustainable Technology Solutions. “Our advanced ETJ process is ready-now and builds upon Honeywell’s near 20 years’ experience in renewable fuels. Honeywell’s renewable fuels solutions, including ETJ, incorporate integrated, modular designs, that enable producers like GranBio to build new SAF capacity more than a year faster than is possible with traditional construction approaches.”