PNNL

Abstract

Hydrothermal Liquefaction (HTL) uses heat and pressure to liquefy the organic matter in bio-mass/waste feedstocks to produce biocrude. When hydrotreated the biocrude is converted into transportation fuels including sustainable aviation fuel (SAF). Further, by liquifying the organic matter in wet wastes such as sewage sludge, manure, and food waste, HTL can prevent landfilling or other disposal methods such as anerobic digestion, or incineration. A significant roadblock to the development of a new route for SAF is the strict approval process, and the large volumes required (>400 L) for testing. Tier a and ß testing can predict some of the properties required for ASTM testing with