https://www.chemistryworld.com/opinion/from-waste-to-renewab…
Lignin is the glue that holds trees together. Papermills process wood chips for cellulose used to make paper. Lignin is a by-product. Traditionally it is burned as fuel at the paper mill for energy.
Chemistry World is reporting new research that can cleave lignin into hydrocarbons suitable for use as motor fuels–gasoline to kerosene range.
Another biofuel source if it proves reliable chemistry.