Farm waste, animal fat, and your everyday food waste could be what fuel your next flight. Farm waste and food waste can be broken down by anaerobic digestion and used to create biogas and power. This fuel is being seen as a potential renewable fuel for the transportation industry and one that creates significantly fewer greenhouse gas emissions than conventional fuels.
United Airlines has already purchased 15 million gallons of renewable jet fuel made from beef tallow by Alt Air Fuels, and plans to use the fuel this year for Los Angeles-to-San Francisco flights. Additionally, the airline has invested $30 million in Fulcrum BioEnergy, Inc., which uses household garbage, including food waste, for its fuel feed stock. There is still work to be done in the field (particularly finding efficient locations and ways of creating this renewable energy), but it may not be far off before flying on our food waste becomes the norm.