Cost-Effective Opportunities to Produce Sustainable Aviation Fuel from Low-Cost Wastes in the U.S

Abstract

Converting low-cost wet organic and municipal solid wastes into sustainable aviation fuel (SAF) represents an immediate opportunity to help decarbonize the aviation sector. To accelerate the commercialization of waste-to-energy technologies, we identify feasible deployment opportunities in the United States (U.S.) for two emerging SAF pathways including direct hydrothermal liquefaction for blended wet organic wastes and gasification with methanol synthesis for municipal solid waste. The impact of fuel credits on plant locations, scales, and performance is investigated by varying the target jet fuel price from a baseline 5 year average of USD $1.97 per gasoline gallon equivalent (GGE) to a RIN credit-adjusted target of USD $2.70/GGE. Total feedstock utilization and SAF output are summarized nationally, by state, and by proximity to existing jet fuel storage and major airports. Depending on carbon credit price, between 40 and 100 sites in the U.S. could produce between 13 and 21 billion L/y (3–5 billion gal/y) of SAF, representing 15–25% of total annual jet fuel use, thereby reducing the carbon intensity of the aviation sector by up to 10–18%. Identified opportunities can help focus future SAF efforts in geographic regions with abundant low-cost feedstock supply in proximity to jet fuel storage and demand.

Antibacterial Agents from Waste Grease: Arylation of Brown Grease Fatty Acids with Beechwood Creosote and Derivatization

“…Since aggregated trap grease carries various nutrients required for bacterial growth, its accumulation in landfills, sewers, and grease interceptors leads to further infestations by both micro- and macroorganisms, unpleasant odors, and larger municipal and environmental issues. Although aggregated trap grease is mainly considered a problematic municipal waste, its lipid components can be recovered as brown grease (BG) and converted to value-added products , such as extra durable composites, , renewable hydrogen, , hydrocarbons, , biofuels including sustainable aviation fuel, , biodiesel, ,,,− and biogas . The recycling and conversion of aggregated trap grease to valuable products can contribute to environmental remedies by reducing municipal pollution, lowering demands for crude oil, and providing economic benefits to both municipalities and waste management industries.…”