# Chemical kinetics of biomass pyrolysis

Thermogravimetric measurements of biomass pyrolysis carried out at different heating rates can be employed to determine the activation energy and the frequency factor of the sample using the Distributed Activation Energy Model. In order to obtain accurate values of the activation energy and frequency factor of the samples, a certain number of TGA curves, obtained at different heating rates, is needed. Accurate values can be obtain applying directly DAEM based on nine TGA curves obtained at different heating rates, however the number of TGA curves can be reduced by considering the measurements uncertainties during the mathematical procedure needed to apply the model.

The Distributed Activation Energy Model can be also applied to describe the biomass pyrolysis process under parabolic and exponential temperature increases by a simple modification of the typical Arrhenius equation used for linear temperature increases.

**Related publications**

- Modeling of the pyrolysis of biomass under parabolic and exponential temperature increases using the Distributed Activation Energy Model. A. Soria-Verdugo, E. Goos, J. Arrieta-Sanagustín, N. García-Hernando.
*Energy Conversion and Management*118, 223-230, 2016. - Effect of the number of TGA curves employed on the biomass pyrolysis kinetics results obtained using the Distributed Activation Energy Model. A. Soria-Verdugo, E. Goos, N. García-Hernando.
*Fuel Processing Technology*134, 360-371, 2015. - Evaluating the accuracy of the Distributed Activation Energy Model for biomass devolatilization curves obtained at high heating rates. A. Soria-Verdugo, L.M. García-Gutiérrez, L. Blanco-Cano, N. García-Hernando, U. Ruiz-Rivas.
*Energy Conversion and Management*86, 1045-1049, 2014. - Analysis of biomass and sewage sludge devolatilization using the Distributed Activation Energy Model. A. Soria-Verdugo, L.M. García-Gutiérrez, N. García-Hernando, U. Ruiz-Rivas.
*Energy Conversion and Management*65, 239-244, 2013.