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Thermogravimetric and kinetic analyses of degradation of groundnut (Arachis hypogaea) shell in air and nitrogen

Yin, C-Y and Jiang, Z-T (2012) Thermogravimetric and kinetic analyses of degradation of groundnut (Arachis hypogaea) shell in air and nitrogen. Journal of the Energy Institute, 85 (1). pp. 57-60.

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Abstract

Thermogravimetric and kinetic data of degradation of groundnut (Arachis hypogaea) shell (GNS) in air or nitrogen have been analysed in this study. The elemental composition, ash content and gross calorific value of GNS have been compared with other biomass fuels. Thermogravimetric analysis has been conducted from 25 to 1000°C where substantial weight reduction commences at 230°C, after which three distinct degradation stages based on consecutive degradation of hemicellulose, cellulose and lignin for both gases are noticeable. Kinetic analysis via linear regression analysis has been performed by means of LINEST function from Microsoft Excel. The activation energies for the degradation stages range from 57.50 to 279.82 kJ mol−1 (air) and 76.71 to 110.78 kJ mol−1 (nitrogen). Findings from this study can help shed light on the effectiveness of GNS as a combustible biomass for small scale energy generation.

Publication Type: Journal Article
Murdoch Affiliation: School of Chemical and Mathematical Science
School of Engineering and Energy
Publisher: Maney Publishing
Copyright: © W. S. Maney & Son Ltd
URI: http://researchrepository.murdoch.edu.au/id/eprint/6568
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