Effect of sample preparation on the thermal degradation of metal-added biomass

Mayer, Zsuzsa, Apfelbacher, Andreas and Hornung, Andreas (2012). Effect of sample preparation on the thermal degradation of metal-added biomass. Journal of Analytical and Applied Pyrolysis, 94 , pp. 170-176.

Abstract

The present study investigates the effect of different sample preparation methods on the pyrolysis behaviour of metal-added biomass; Willow samples were compared in the presence of two salts of zinc and lead containing sulphate and nitrate anions which were added to the wood samples with three different techniques as dry-mixing, impregnation and ion-exchange. The effect of acid and water wash as common demineralisation pre-treatments were also analysed to evaluate their roles in the thermal degradation of the biomass. Results from thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR) and pyrolysis-mass spectrometry (Py-MS) measurements indicated that these pre-treatments change the matrix and the physical-chemical properties of wood. Results suggested that these structural changes increase the thermal stability of cellulose during pyrolysis. Sample preparation was also found to be a crucial factor during pyrolysis; different anions of metal salts changed the weight loss rate curves of wood material, which indicates changes in the primary degradation process of the biomass. Results also showed that dry-mixing, impregnation or ion-exchange influence the thermal behaviour of wood in different ways when a chosen metal salt was and added to the wood material.

Publication DOI: https://doi.org/10.1016/j.jaap.2011.12.008
Divisions: Engineering & Applied Sciences > Chemical engineering & applied chemistry
Engineering & Applied Sciences > European Bioenergy Research Institute (EBRI)
Additional Information: NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Analytical and Applied Pyrolysis. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Mayer, Z, Apfelbacher, A & Hornung, A, 'Effect of sample preparation on the thermal degradation of metal-added biomass', Journal of Analytical and Applied Pyrolysis, vol 94, pp. 170-176 (2012). DOI http://dx.doi.org/10.1016/j.jaap.2011.12.008
Uncontrolled Keywords: analytical pyrolysis,demineralisation,dry-mixing,impregnation,ion-exchange,inorganic metal salts
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Related URLs: http://www.scopus.com/inward/record.url?scp=84858440353&partnerID=8YFLogxK (Scopus URL)
Published Date: 2012-03
Authors: Mayer, Zsuzsa
Apfelbacher, Andreas
Hornung, Andreas

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