Thermogravimetric analysis and kinetics modeling of isothermal carbonization of olive wood in inert atmosphere |
| |
Authors: | Najla Grioui André Zoulalian |
| |
Institution: | a Micro-Electro-Thermal Systems - Industrial Energy Systems Group (METS-IESG), Institut Préparatoire aux Etudes d’Ingénieurs de Sfax (IPEIS), B.P. 805, 3000 Sfax, Tunisie b Laboratoire d’Etudes et de Recherches sur le Matériau Bois (LERMAB), Université Henri Point Carré Nancy 1 (UHP), B.P. 239, 54506 Vandoeuvre lès Nancy Cedex, France c Ecole Nationale d’Ingénieurs de Sfax (ENIS), B.P. 3038, Sfax, Tunisie |
| |
Abstract: | The kinetics of olive wood carbonization is investigated by means of isothermal thermogravimetric analysis method. Measurements were carried out in a thermobalance for different fixed temperatures between 498 and 648 K. A two-stage semi-global kinetic model consisting of four sequential steps was proposed to derive kinetic parameters. The olive wood is classified in three pseudo-components. For the first two, similar thermal degradation mechanisms take place in a single reaction step. For the third, the thermal degradation takes place in two consecutive steps. The isothermal conditions allow the kinetic constants (activation energy and pre-exponential factors) to be estimated by means of the analytical solution of the mass conservation equations. An overall good agreement was obtained with activation energy values available in the literature. |
| |
Keywords: | Carbonization Olive wood Kinetic parameters TGA Modeling |
本文献已被 ScienceDirect 等数据库收录! |
|