Physico-chemical characterization of agro-waste sugarcane bagasse ash from three brazilian sugarcane mills and obtaining biosilica from ash
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Chemical Science & Engineering Research
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Resumo
The interest in transforming biomass into new sources of energy and new materials has been encouraging
studies around the world. The ash resulting from the burning of straw and sugarcane bagasse, for example, is a
material rich in silica. In the present study, samples of fly ash and bottom ash from sugarcane residues were collected
in three different mills (Cerradinho Iracema and Guaíra), located in regions where the soils are classified as oxisols. The
ashes were characterized by XRD, EDX, ICP-OES, SEM, FTIR spectroscopy and TGA/DTG techniques. Most ash samples
showed silica as the main constituent (42-69%) and silica in crystalline form in all. Biosilica was obtained from ash
samples using alkali extraction and acid precipitation. The physical and chemical properties of the extracted biosilica
are described. The biosilica samples have amorphous phases and purity ranged from 93 to 97 wt.%. The results showed
that the different origins of sugarcane residue ash used as raw material did not affect the quality of the extracted
biosilica.
Como referenciar
ROVANI S.; SANTOS, J.J.; CARVALHO, F.B.; RAMOS, N.P.; SALDANHA, M.; MORANDI, M.B.A.; FUNGARO, D.A. Physico-chemical characterization of agro-waste sugarcane bagasse ash from three brazilian sugarcane mills and obtaining biosilica from ash. Chemical Science & Engineering Research, v. 5, n. 12, p. 1-7, 2023. DOI: 10.36686/Ariviyal.CSER.2023.05.12.067. Disponível em: https://repositorio.ipen.br/handle/123456789/47870. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.