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Multicomponent modelling kinetics and simultaneous thermal analysis of apricot kernel shell pyrolysis

Original scientific paper

Journal of Sustainable Development of Energy, Water and Environment Systems
ARTICLE IN PRESS (volume, issue and page numbers will be assigned later)
DOI: http://dx.doi.org/10.13044/j.sdewes.d7.0307
Nebojsa Manic1 , Bojan Janković2, Vladimir Dodevski3, Dragoslava Stojiljkovic1, Vladimir Jovanović1
1 University of Belgrade Faculty of Mechanical Engineering, Fuel and Combustion Laboratory KraljiceMarije 16, P.O. Box 35, 11120 Belgrade, Serbia
2 University of Belgrade, Institute of Nuclear Sciences “Vinča”, Laboratory for Physical Chemistry, P.O. Box 522, 11000 Belgrade, Serbia
3 University of Belgrade, Institute of Nuclear Sciences “Vinča”, Laboratory for Materials Sciences, P.O. Box 522, 11000 Belgrade, Serbia

Abstract

Apricot kernel shells are naturally available source of biomass with potential for conversion to clean energy through a thermo-chemical process such as pyrolysis. To facilitate further process development, an advanced mathematical model which represents the process kinetics is developed and validated on the thermal decomposition studies using simultaneous thermal analysis, over a temperature range of 30 – 900 °C, at four heating rates of 5, 10, 15 and 20 °C min-1, under argon atmosphere. Model-free analysis and numerically developed methods were utilized for determination of effective activation energies, pre-exponential factors and the fractional contribution. A novel approach is introduced in order to determine actual pseudo-components of studied biomass that are included in its composition. The comparative study of the obtained kinetic results was also presented. The results obtained strongly indicated that the pseudo-component reaction modelling method could be employed to predict the experimental devolatilization rate and biomass composition with a high likelihood of success.

Keywords: Fruit-based biomass; Pseudo-component; Kinetics; Model; Pyrolysis; TGA.

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