Pyrolysis kinetic study on waste particle residue from particle board industry

The particle board industry always generates huge fine-particle sanding wood waste (FPSW) that has very limited usage. In the present study, FPSW was pyrolyzed in a thermogravimetric analyzer at room temperature to 650 degrees C with heating rates of 5, 10, and 15 degrees C min(-1) in a highly purified N-2 atmosphere. Physicochemical analysis with a bomb calorimeter showed that FPSW has a moderate higher heating value and does not contain sulfur. Elemental analysis was conducted to identify the main components of FPSW. Results revealed that the thermal degradation of FPSW occurs in three stages. Moreover, peak temperature and volatized matter increased with increasing heating rate. The kinetics of the main pyrolysis process was analyzed using Kissinger-Akahira-Sunose (KAS) and Flynn-Wall-Ozawa (FWO) methods, and reaction mechanism during pyrolysis was analyzed by Coats-Redfern method. The isoconversional method showed that the pyrolysis reaction conforms to a single reaction model and has activation energy of 180.79 and 180.11 kJ mol(-1) by KAS and FWO methods, respectively. The results of the present study provide useful information for designing a pyrolytic processing system that uses FPSW as an energy or chemical source.