ADVANCED AIR SEPARATION (ASU) FOR LOW-COST H2 PRODUCTION VIA MODULAR GASIFICATION THE OBJECTIVE OF THIS WORK IS TO DEVELOP A MODULAR, NOVEL, SORBENT-BASED, ADVANCED AIR SEPARATION UNIT (ASU) FOR OXYGEN PRODUCTION TO SUPPORT LOW-COST HYDROGEN PRODUCTION FROM THE GASIFICATION OF BIOMASS AND/OR WASTES.