Briquetting of charcoal from sugar-cane bagasse fly ash (scbfa) as an alternative fuel |
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| Authors: | SR Teixeira AFV Pena AG Miguel |
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| Institution: | 1. Department of Physics, Chemistry and Biology, Universidade Estadual Paulista – UNESP, P.O. Box 467, 19060-080 Presidente Prudente, SP, Brazil;2. Usina Alto Alegre S.A., Fazenda Alta Floresta – Distrito de Ameliópolis, 19140-000 Presidente Prudente, SP, Brazil;1. Department of Chemical Engineering, University of San Carlos, Talamban, Cebu City, 6000, Philippines;2. Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology Taipei City, Da''an District, Taipei City, Taiwan;3. Department of Chemical Engineering, National Taiwan University of Science and Technology, Keelung Road, 10607, Taipei City, Da''an District, Taipei City, Taiwan;4. Taiwan Building Technology Center, National Taiwan University of Science and Technology, Keelung Road, 10607, Taipei City, Da''an District, Taipei City, Taiwan;1. Department of Mechanical Engineering, Makerere University, P.O. BOX 7062, Kampala, Uganda;2. Africa Center of Excellence in Materials, Product Development and Nanotechnology, Makerere University, P.O. BOX 7062, Kampala, Uganda;3. Department of Mechanical and Industrial Engineering, University of Dar es Salaam, P. O. BOX 35131, Dar es Salaam, Tanzania |
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| Abstract: | 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. |
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