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Pyrolysis Characteristics and Isoconversional kinetics of kusum deoiled seedcake.

Satyavathi Bankupalli


The pyrolysis characteristics and kinetics of kusum de-oiled seed cake were conducted using a Thermo gravimetric analyzer. Thermogravimetric analysis of biomass was carried out at three different heating rates of 10, 20, 30, ̊ C/min from 28 ̊ C to 1000 ̊ C under N2 atmosphere. The results indicated that the biomass was decomposed in the temperature range of 270 ̊C to 520 ̊ C and further decreased when temperature was raised to 1000 ̊ C. The kinetic parameters such as activation energy , pre-exponential factor and reaction order for the active pyrolysis zone under study have been evaluated for the particular heating rates using Coats-Redfern, Kissinger Akahira-sunose (KAS), Flynn-Wall-Ozawa (FWO). The Overall decomposition reaction order as determined by Coats-Redfern method was two. Activation energy was calculated using KAS and OFW methods respectively. The characterization of the raw biomass produced has been carried out using CHNSO, SEM (Scanning electron microscopy), FTIR (Fourier transform infrared spectroscopy) and Powder XRD (X-ray diffraction). The kinetics showed that the biomass would require less energy input for thermo chemical conversion to bioenergy. Thus kusum biomass proved to be a potential feedstock among the other biomass resources for present and future bioenergy fuels.

Keywords: kinetic parameter, Kusum de-oiled seed cake, pyrolysis, TGA

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