Thermal behavior of residues (sludge) originating from the sugarcane industry
Nenhuma Miniatura disponível
Data
2011-12-01
Autores
Lourenco, Renato Vessecchi [UNESP]
Kobelnik, Marcelo [UNESP]
Ribeiro, Clovis Augusto [UNESP]
Fernonani, Fernando L. [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Springer
Resumo
The Brazilian sugarcane industry shows a great amount of generated sludge which should be utilized adequately. Two sludge samples, aerobic and anaerobic, were collected. Both were evaluated by thermogravimetry and differential thermal analysis (DTA) as well as X-ray power diffraction. These compounds show variations of mass between 30 and 140 A degrees C due to the dehydration stage. The DTA curves show that the compounds have an exothermic reaction between 450 and 550 A degrees C, which indicates that this can be used as an energy source. Details concerning the kinetic parameters of the dehydration and thermal decomposition have also been described here. The kinetic study of these stages was evaluated in open crucibles under nitrogen atmosphere. The obtained data were evaluated with the isoconversional kinetic method. The results show that different activation energies were obtained for thermal decomposition.
Descrição
Palavras-chave
Sludge, Thermal behavior, X-ray power diffraction
Como citar
Journal of Thermal Analysis and Calorimetry. Dordrecht: Springer, v. 106, n. 3, p. 735-740, 2011.