Banca de QUALIFICAÇÃO: ELLEN KADJA LIMA DE MORAIS

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : ELLEN KADJA LIMA DE MORAIS
DATA : 14/08/2018
HORA: 09:00
LOCAL: Sala de Reunião do Laboratório de Combustíveis e Lubrificantes
TÍTULO:

CATALYTIC CO-PYROLYSIS OF PLASTIC WASTE AND EUCALYPT BIOMASS FOR OBTAINING ALTERNATIVE FUELS

PALAVRAS-CHAVES:

Co-pyrolysis; Zeolite Beta; Plastic; Eucalyptus biomass

PÁGINAS: 112
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Química
RESUMO:

Research by sustainable energy sources has encouraged processes for the conversion of biomass and low density polyethylene (LDPE) into products that substitute the petroleum derivatives through co-pyrolysis. Bio-oil is a bioproduct originating from this process, which can be used as fuels in the polymer industry, fine chemicals and others. However, this material is highly oxygenated, has low chemical stability and energy density, to minimize the problems mentioned it can be processed by eliminating the oxygenated compounds through catalysts, which in addition to improving its quality, help in reducing temperatures and times of reaction. In this context, the objective of this work was to investigate the co-pyrolysis of plastic waste and Eucalyptus biomass to obtain bio-oil. For this, two Beta zeolites were used that differed in their acidic properties (Si / Al = 18 and 80) in different proportions of Biomass: LDPE (60, 70, 80 and 90%) first in the absence of metals, when finding the best percentage to be worked the tests were carried out in the presence of the metals (Ga, Ni and Zn). These catalysts were applied in the co-pyrolysis by evaluating their properties in the catalytic activity, aiming at the recycling of plastics and residual Eucalyptus biomass to obtain high added value raw materials and fuels. Finally, the scalers were characterized with XRD, ICP-OES, Adsorption-Desorption Isotherms at 87 K, TPR and TPD-NH3. For the solid products (char) was used Thermogravimetry (TG) and elemental analysis (CHNS- O), while the liquid product (bio-oil) was analyzed by Karl Fischer, CHNS-O and CG / MS. It was observed that the percentage that obtained the best mass balance was 60% with zeolite Beta 18 and Nickel was the metal that presented the most satisfactory results at 550 ° C, generating reduction oxygen and acidity, as well as increasing the bulk yield of the bio-oil (approximately 40%). Therefore, it is possible to affirm that the use of Beta zeolite in the co-pyrolysis has shown to be promising for the future use of the product formed, since they efficiently catalyze the conversion of the biomass: LDPE mixture into hydrocarbons of low molecular weight, reaching a high degree of deoxygenation, minimizing the effects of deactivation by formation and deposit of coke, generating bioproducts that can be used in the conversion of high added value chemical products.

MEMBROS DA BANCA:
Presidente - 350509 - ANTONIO SOUZA DE ARAUJO
Interno - 2140818 - AMANDA DUARTE GONDIM
Interno - 1149328 - VALTER JOSE FERNANDES JUNIOR
Externo à Instituição - RENATA MARTINS BRAGA - UFRN