Effect of heating rate on the chemical kinetics of different biomass pyrolysis materials

The present work is attempting to focus on thermal degradation properties and the kinetics of pyrolysis for biomass samples like wheat straw, wheat dust, and corn cob using thermogravimetric analysis in a nitrogen atmosphere at heating rates of 10, 15, and 20 K/min. It appears that as the heating rate is increased, the thermal degradation process is delayed and the main step of mass loss takes place between 250 degrees C and 400 degrees C, with about 75% loss of the initial mass of the sample. The ignition and burnout temperature values of biomass samples are determined at different heating rates. It was found that corn cob has the highest values. Proximate and ultimate analysis of the three biomass fuels was investigated as corn cob has the highest heating and volatile matter values (3971.86 Cal/gm and 84%, respectively). Kinetics parameters such as activation energy, frequency factor, and reaction order are determined using integral and sequential methods.