Sustainable Aviation Fuel (SAF) can be produced from a variety of sources, often referred to as 'feedstocks'. These include agricultural and forestry residues (like wood waste), municipal solid waste, used cooking oil, and even certain types of algae and animal fats. Corn grain, while a biofuel source for other applications, can also be processed into SAF, typically through biochemical pathways. Wastewater treatment sludge, rich in organic matter, is also a viable and emerging feedstock for SAF production, further diversifying the sustainable energy landscape.