http://lattes.cnpq.br/7065083467663106; SILVA, Tácia Thaisa de Lima.
Résumé:
The pyrolysis of biomass use organic waste thermochemical conversion of oxygenates to produce lower molecular weight, aiming at the production of energy. The content of the lignocellulosic components (cellulose, hemicellulose, lignin) in addition to the moisture and ash is what gives the end products of the process, namely bio-oil, coal and gas. This study aimed to evaluate the influence of Ni / MCM-41 catalyst in the fast pyrolysis process sisal bagasse (Agave sisalana). Biomass was characterized according to their lignocellulosic composition, thermal analysis, scanning electron miscroscopia, infrared spectroscopy and finally was performed kinetic study to evaluate the apparent activation energy of thermal decomposition of lignocellulosic components sisal bagasse. The catalyst was synthesized and characterized by X-ray diffraction, spectroscopy in the infrared region and thermogravimetric analysis were performed and finally the pyrolysis in a micro pyrolyser CDS HP 5200-R CDS Analytical, in a temperature range of 500 ° C. They analyzed 31 peaks in the chromatogram produced by the pyrolytic process sisal bagasse. The analysis of the influences of the results of fast pyrolysis with the catalyst only containing MCM-41 and another Ni / MCM-41. The results of the characterization of sisal pulp showed that biomass has a high cellulose content, the use of the catalyst Ni / MCM-41 did not significantly favors the reduction of oxygenated compounds. Furthermore, sisal pulp as organic waste can be passed through thermochemical processes generate new products, and reducing the environmental impact caused by its accumulation.
