Determination of Kinetic Parameters for the Thermal Decomposition of Parthenium Hysterophorus

Environmental and Climate Technologies 2018
Alok Dhaundiyal, Suraj B. Singh, Muammel M. Hanon, Rekha Rawat

A kinetic study of pyrolysis process of Parthenium hysterophorous is carried out by using thermogravimetric analysis (TGA) equipment. The present study investigates the thermal degradation and determination of the kinetic parameters such as activation E and the frequency factor A using model-free methods given by Flynn Wall and Ozawa (FWO), Kissinger-Akahira-Sonuse (KAS) and Kissinger, and model-fitting (Coats Redfern). The results derived from thermal decomposition process demarcate decomposition of Parthenium hysterophorous among the three main stages, such as dehydration, active and passive pyrolysis. It is shown through DTG thermograms that the increase in the heating rate caused temperature peaks at maximum weight loss rate to shift towards higher temperature regime. The results are compared with Coats Redfern (Integral method) and experimental results have shown that values of kinetic parameters obtained from model-free methods are in good agreement. Whereas the results obtained through Coats Redfern model at different heating rates are not promising, however, the diffusion models provided the good fitting with the experimental data.

Keywords
Biomass pyrolysis; Coats Redfern method; kinetic parameters; model-free methods; non-isothermal
DOI
10.1515/rtuect-2018-0001

Dhaundiyal, A., Singh, S., Hanon, M., Rawat, R. Determination of Kinetic Parameters for the Thermal Decomposition of Parthenium Hysterophorus. Environmental and Climate Technologies, 2018, Vol.22 No.1, pp.5-21. e-ISSN 2255-8837. Available from: doi:10.1515/rtuect-2018-0001

Publication language
English (en)