title: The kinetic analysis of the pyrolysis of agricultural residue under non-isothermal conditions.
abstract: The study concerns the pyrolysis kinetics of agricultural wastes, corn straw (CS) and rice husk (RH). Thermogravimetric experiments were carried out in a thermogravimetric analyzer under inert conditions, and operated at different heating rates ranging from 5 to 40K/min. As the increment of heating rates, the variations of characteristic parameters from the TG-DTG curves were determined. Iso-conversional Starink approach and Avrami theory were used to evaluate the kinetic parameters, including apparent activation energy and reaction order. For the range of conversion fraction investigated (20-80%), the apparent activation energy of CS initially increased from 98.715 to 148.062 kJ/mol and then decreased to 144.387 kJ/mol afterwards, whilst the apparent activation energy of RH increased gradually from 50.492 to 88.994 kJ/mol. With varied temperatures (517-697 K), the corresponding value of reaction order was increased from 0.288 and 0.359 to 0.441 and 0.692, along with a decrease to 0.306 and 0.445, respectively.
authors.affiliation: Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Department of Mechanical Engineering, Shandong University, Jinan 250061, PR China.
authors.forename: Chao
authors.initials: C
authors.lastname: Gai
authors.forename: Yuping
authors.initials: Y
authors.lastname: Dong
authors.forename: Tonghui
authors.initials: T
authors.lastname: Zhang
mesh_terms: D056804:Biofuels; D006358:Hot Temperature; D007700:Kinetics; D012275:Oryza / Q000737:chemistry*; D013818:Thermogravimetry; D014866:Waste Products / Q000032:analysis*; D003313:Zea mays / Q000737:chemistry*
chemical_list: D056804:Biofuels; D014866:Waste Products