METHODS OF REDUCING ODOR IN EXTRUDED LIGNIN AND EXTRUDED LIGNIN WITH REDUCED ODOR

摘要

Methods of reducing odiferous compounds in lignin, and reduced-odor lignin produced by the present methods. A solvent, for example a polar solvent such as ethanol, may be mixed with lignin in an extruder to remove odiferous compounds such as mercaptans and phenolic compounds. The polar solvent can then be boiled or evaporated out of the mixture to extract the odiferous compounds from the lignin.