Abstract:
The Coats-Redfern method for model-fitting and its correlation coefficients for various
models were used to identify the catalytic and non-catalytic pyrolysis of rice husk biomass
kinetics by using the thermogravimetric data. The rice husk was mixed with each catalyst
(MTES-beta-zeolite, beta-zeolite, commercial beta-zeolite) at a ratio of 1:0.03 by mass.
According to the thermogravimetric data, thermal degradation for catalytic and noncatalytic pyrolysis of rice husk biomass occurred at 250 ° C to 550 ° C. Section I (250-
360 °C) and Section II (450-550 °C) of thermal degradation were identified, and the best
acceptable models for the behavior of catalytic and non-catalytic biomass pyrolysis were
found. All reaction models, including diffusion-controlled reaction, chemical reaction,
power-law model, Avrami Erofeev equation, and phase boundary, were kinetically
characterized, and they described the nature of biomass pyrolysis. From the activation
energy trends, it can be understood that MTES beta-zeolite has no significant effect on
pyrolysis in Section I but has significant effects in Section II. The beta-zeolite and
commercial beta-zeolite gave better results for all reaction models in both sections by
lowering the activation energies for catalytic pyrolysis of rice husk biomass compared to
those for non-catalytic pyrolysis. Kinetic analysis of reaction models F1, F1.5, D2, D3,
and D4 described appropriate results that are in approximation with each other for both
sections.
