Banca de DEFESA: THIAGO JACKSON TORRES CRUZ

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : THIAGO JACKSON TORRES CRUZ
DATE: 31/03/2025
TIME: 09:00
LOCAL: Auditório do Química III
TITLE:

Integrated Development of CO2 Capture and Conversion Technologies: Use of Microalgae, Adsorption by Zeolites and Catalytic Conversion to Dimethyl Ether

KEY WORDS:

Microalgae; Chlorella sp; carbon dioxide; catalysis and zeolites

PAGES: 127
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUBÁREA: Físico-Química
SPECIALTY: Cinética Química e Catálise
SUMMARY:

Population growth, rapid industrial development and urbanization have increased the demand for energy production, especially the use of fossil fuels, causing the large-scale release of CO2 into the atmosphere. It is estimated that fossil fuel plants emit almost 33.4 Gt of CO2 each year, representing approximately 40% of the total CO2 emitted on the planet, significantly increasing the effects of global warming. In an attempt to mitigate these effects, several efforts have been sought, including alternative routes for producing renewable energy such as wind, solar, biomass and other sources that can minimize the release of CO2 into the atmosphere, as well as technological routes for capturing carbon dioxide such as physical, chemical and biological. The biological route used the cultivation of microalgae of the Chlorella sp type in a closed system, using 5-liter drum-type flasks and with continuous injection of 98% commercial CO2 gas and in simulated conditions 15% CO2, 73% N2 and 12% O2. The dry biomass productivity was 0.81 g. L-1.day-1 and the maximum CO2 fixation rate was 0.90 g. L-1.day-1 when the microalgae were cultivated with continuous flow of simulated residual gas and culture medium composed of waste water. Following technological pathways aiming at CO2 mitigation, commercial zeolites of the FAU Y type (CBV 100, CBV 712, CBV 720, CBV 760 and CBV 780) were used in the CO2 adsorption study. The CBV100Na zeolite was the main carbon dioxide adsorptive material. Finally, commercial zeolites were also used as catalytic support for Cu and Zn impregnation as a catalytic pathway to promote the conversion of synthesis gas to methanol and/or dimethyl ether.

COMMITTEE MEMBERS:
Externo à Instituição - EDUARDO RIGOTI - UFRN
Externa à Instituição - FABIANA RODRIGUES DE ARRUDA CAMARA - UFRN
Externo à Instituição - FABIO GARCIA PENHA - IFRN
Externa à Instituição - MARIELE IARA SOARES DE MELLO - UFRN
Presidente - 1308577 - SIBELE BERENICE CASTELLA PERGHER
Interno - 2087667 - TIAGO PINHEIRO BRAGA