Energy potential and thermogravimetric study of pyrolysis kinetics of biomass wastes

Autor: Janduir Egito da Silva, Guilherme Quintela Calixto, Renata Martins Braga, Marcus Antônio de Freitas Melo, Julio Cezar de Oliveira Freitas, Cássia Carvalho de Almeida, Dulce Maria de Araújo Melo
Rok vydání: 2019
Předmět:
Zdroj: Journal of Thermal Analysis and Calorimetry. 137:1635-1643
ISSN: 1588-2926
1388-6150
Popis: The use of agricultural wastes for energy conversion has been widely studied as renewable and carbon neutral energy sources. This paper aims to evaluate the energetic potential of six agricultural wastes—sugarcane bagasse, bean pods, corn stover, pineapple crown leaves, white cotton and natural coloured cotton stalks, through their characterization and pyrolysis kinetic study. The energetic potential of biomasses was evaluated by ultimate and proximate analysis, higher heating value (HHV), apparent density, and kinetic parameters of conversion and apparent activation energy (Ea) determined by Model-Free kinetics though thermogravimetric analysis data. The results indicate energetic density for dry basis biomasses, such as moisture content less than 7%, volatiles higher than 77% and moderate ash content. The HHVs were higher for the biomass with low O:C ratio. The Ea values increased with increasing O:C ratio and were also influenced by the biomass ash content. Among the studied biomasses, PCL are less explored for energy application, although the results confirm its potential for application in thermochemical processes such as pyrolysis or combustion.
Databáze: OpenAIRE
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