Kinetic analysis of pyrolysis and combustion of the olive tree pruning by chemical fractionation. (February 2018)

• Record Type: Journal Article
• Authors: Pérez, A.; Martín-Lara, M.A.; Gálvez-Pérez, A.; Calero, M.; Ronda, A.
• Is Part Of: Bioresource technology. Volume 249(2018)
• Page Start: 557
• Page End: 566
• Publication Date: 2018-02
• Subjects: Chemical Fractionation -- Combustion -- Olive tree pruning -- Pyrolysis -- Thermogravimetric analysis -- Valorization; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2017.10.045
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Study of the olive tree pruning pyrolysis and combustion. The composition of the solid is the key to model its thermochemical conversion. The degradation and combustion of each fraction was related with its structure. Lignin was the hardest fraction to decompose and its conversion started later. The experimental and modelled data were in good agreement. Abstract: This paper presents a kinetic analysis of thermal decomposition of olive tree pruning from its basic compounds in pyrolysis and combustion reactions. Experiments were performed by TGA under inert and oxidant conditions and results indicated that the decomposition of the olive tree pruning was related to the material composition. Pseudo-mechanistic models were proposed estimating the yield of pyrolysis on its basic compounds (hemicelluloses, cellulose and lignin). Validity and reliability of the proposed kinetic models were verified by the good fitting between the simulated and experimental curves (with values of R 2 higher than 0.99 in most cases). Moreover, during the fractionation process, an acid fraction was obtained with great fuel properties, a high calorific value and a low residue after its combustion.