Miscanthus × Giganteus straw and pellets as sustainable fuels and raw material for activated carbon |
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Authors: | R. Michel N. Mischler B. Azambre G. Finqueneisel J. Machnikowski P. Rutkowski T. Zimny J. V. Weber |
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Affiliation: | (1) Laboratoire de Chimie et Applications, Université de Metz, rue V. Demange, 57500 Saint Avold, France;(2) Université de Metz, IUT – département Chimie, rue V. Demange, 57500 Saint Avold, France;(3) Faculty of Chemistry, Wrocław University of Technology, Gdańska 7/9, 50-344 Wrocław, Poland |
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Abstract: | Miscanthus × Giganteus is an excellent candidate for energy cultivation. Here we report, for the first time, the results of the pyrolysis of Miscanthus × Giganteus straw or pellets both in tubular reactor (3–6 g) and in rotary kiln (10–30 g). At 400–600°C the fractions obtained from both reactors are: solid 16–25 (wt.%); liquids 25–40; water 15–20 and gases 15–50. GC-MS analyses of pyrolysis liquids reveal the occurrence of phenolic derivatives and ethanol from lignin, furanic and linear oxygenated compounds from cellulose and hemicellulose. Finally the chars produced by the pyrolysis of M×G pellets in rotary kiln present good calorific values close to 29,000 J/g. Additionally, activated carbons with a BET surface area as high as 800–900 m2/g are produced from pellets. These results indicate that chars have a good potential either for energy production, e.g. briquetting, or as adsorbents precursors. |
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Keywords: | Renewable energy Biomass Miscanthus Pyrolysis Pellets Straw Chars Bio oils |
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