Compared to pyrolysis and gasification of lignocelluloses, generally speaking, the presence of highvolatile components as plastics and rubber modifies the reaction kinetics and the waste mechanicalbehavior during treatment. Therefore we used a mixture of pine wood and PET to simulate the MSW.Both products were dried (at 105_C for 24 hours) and grinded. Nevertheless, as the gasification stagewas conducted on pyrolysis char, the raw product properties have no influence on this treatmentsequence.