Study of catalytic pyrolysis of biomass sorghum (Sorghum bicolor L. Moench) using design of experiments and surface response methodology.

This study proposes a screen of variables that have an influence on the modification of the bio-oil chemical composition as a unique critical quality attribute (CQA) throughout the pyrolytic process (zeolite, ZSM-5) by using a 24 full factorial design, followed by optimization through a response surface methodology (RSM) based on central composite design (CCD) involving samples of biomass sorghum BRS716 (Sorghum bicolor L. Moench). The pyrolysis of pure biomasses and the biomass impregnated with the catalyst was carried out in a vertical bench furnace at 500 °C. Screening design involved factor variation in two levels (?1 and +1) of four variables as critical process parameters (CPPs) such as furnace heating rate (°C min?1), nitrogen flow (mL min?1), amount of biomass (g), and catalyst (% m/m), leading to obtaining bio-oil. Thus, it was possible to create a response surface from these two variables (biomass and catalyst), in which a minimum critical point was reached. The production of a bio-oil rich in hydrocarbon compounds is possible, but a large amount of catalyst was required. Two analytical techniques based on gas chromatography coupled to mass spectrometry (GC-MS) and mid-infrared (MIR) spectroscopy, provided additional information to fully characterize bio-oil chemical composition.

Bibliographic Details

Main Authors:	COSTA, D. M., SIMEONE, M. L. F., PARRELLA, R. A. da C., FORTES, I. C. P.
Other Authors:	DIEGO M. COSTA, Universidade Federal de Minas Gerais; MARIA LUCIA FERREIRA SIMEONE, CNPMS; RAFAEL AUGUSTO DA COSTA PARRELLA, CNPMS; ISABEL C. P. FORTES, Universidade Federal de Minas Gerais.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	Journal of the Brazilian Chemical Society, v. 34, n. 1, p. 112-123, 2023. 2022-07-14
Subjects:	Processo pirolítico, Pyrolytic process, Optimization, Sorgo, Biocombustível, Biomassa, Biofuels,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1144712 https://dx.doi.org/10.21577/0103-5053.20220093
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