Journal
BIORESOURCE TECHNOLOGY
Volume 102, Issue 10, Pages 6230-6238Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.02.060
Keywords
Biomass; Kinetic study; Thermogravimetric analysis; Pyrolysis; Cardoon
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A key element in the design of sustainable pyrolysis processes is the thermal degradation kinetics of biomass. In this work, pyrolysis tests for cardoon (Cynara carduculus) stems and leaves were performed in a non-isothermal thermogravimetric analyzer (TGA) in order to determine the thermal degradation behavior of both stems and leaves. The kinetic parameters of the process were evaluated using three different kinetic models, the independent parallel reaction model, KAS and OFW iso-conversional model. Good agreement with the experimental TGA data was observed for all models, the best being with the independent parallel reaction model. A variance in the activation energy with conversion was observed when the KAS and OFW models were employed, which reveals that the pyrolysis of cardoon progresses through more complex and multi-step kinetics. (C) 2011 Elsevier Ltd. All rights reserved.
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