Non-isothermal kinetics of pyrolysis of rice husk

摘要: Abstract The kinetics of pyrolysis rice husk was studied under non-isothermal heating in air or nitrogen media. Based on TG curves, the kinetic parameters process were calculated using method Coats–Redfern and fourteen equations. It found that experimental data best described by equation Ginstling–Brounshtein valid for diffusion-controlled reactions starting exterior spherical particles with uniform radius. values activation energy, frequency factor, change entropy, enthalpy Gibbs energy formation active complex reagent. diffusion control explained high strength SiO carcass biomass which impeded release volatile products. confirmed also similarity curves electron microscopy photographs hard residue obtained after oxidative inert medium.