Publicação: Briquetting of charcoal from sugar-cane bagasse fly ash (scbfa) as an alternative fuel
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Pergamon-Elsevier B.V. Ltd
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Brazil is the largest worldwide producer of alcohol and sugar from sugar-cane and has an extensive alternative program for car fuel which is unique. The objective of this work is to offer one management option of a solid residue produced by this industrial segment. The pressed sugar-cane bagasse is burned to produce steam and electricity by cogeneration. The combustion yields both bottom and fly ashes which contain high amounts of silicon oxide as a major component. Fly ash which contains a high volume (>30% by weight) of charcoal was used in this work. The ash was sieved to separate the thick charcoal from inorganic materials which are concentrated in the thinner fraction. The briquettes were hand pressed using charcoal mixed with a binder (starch) obtained from cassava flour (a tropical root). The results (density, mechanical resistance) obtained with 8% by weight of starch binder are presented here. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were used to characterize the ashes and the briquettes. The results show that sugar-cane bagasse fly ash (SCBFA) can be used to produce briquettes with an average density of 1.12 g cm(-3) and an average calorific value of 25,551 kJ/kg. (C) 2010 Elsevier Ltd. All rights reserved.
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Waste Management. Oxford: Pergamon-Elsevier B.V. Ltd, v. 30, n. 5, p. 804-807, 2010.
