Banca de DEFESA: LAYSSA CRISTINE ALVES

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : LAYSSA CRISTINE ALVES
DATE: 30/09/2025
TIME: 14:00
LOCAL: Auditório do Nupeg e https://meet.google.com/sey-igpc-tqr (modo híbrido)
TITLE:

Vapor-Liquid Equilibria in the Fractionation of Eucalyptus Pyrolysis Products

KEY WORDS:

Molecular Thermodynamics, Ebulliometer, Eucalyptus Oil, Ethanol, Biorefinary

PAGES: 59
BIG AREA: Engenharias
AREA: Engenharia Química
SUBÁREA: Operações Industriais e Equipamentos para Engenharia Química
SPECIALTY: Operações de Separação e Mistura
SUMMARY:

Bio-oil, produced via biomass pyrolysis, is a renewable and sustainable alternative in response to the growing global energy demand. Used in biorefineries, it can partially replace petroleum in the production of fuels and chemicals, contributing to the reduction of greenhouse gas emissions. Its production from agricultural and forestry residues supports circular economy principles and energy security, making it essential for the transition to a cleaner energy matrix. To enable its use in separation and refining processes, such as distillation, it is crucial to obtain thermodynamic data, especially those related to vapor–liquid equilibrium (VLE). These data allow for accurate modeling of the behavior of mixtures present in bio-oil, which is essential for the design and optimization of industrial operations involving its purification and energy recovery. In order to obtain such information to improve these methods, this work employed an Othmer ebulliometer to experimentally measure the vapor–liquid equilibrium of the pseudo-binary mixture of eucalyptus bio-oil and ethanol at low pressures. Instrumental calibrations ensured reliable measurements for the analysis of the system's phase behavior. The results showed the expected thermodynamic behavior, with ethanol predominantly in the vapor phase and phenolic compounds concentrating in the liquid phase, highlighting the potential for thermal fractionation of bio-oil. The presence of high-value-added phenols reinforces its application beyond energy, as a chemical feedstock. The ongoing physicochemical characterization will complement the data, strengthening the application of thermodynamic models and the development of industrial processes.

COMMITTEE MEMBERS:
Externo à Instituição - ALESSANDRO ALISSON DE LEMOS ARAÚJO - UFERSA
Externo à Instituição - ANDERSON ALLES DE JESUS - UFMA
Interna - ***.000.000-** - FEDRA ALEXANDRA DE SOUSA VAQUERO MARADO FERREIRA - UFRN
Interno - 1670497 - HUMBERTO NEVES MAIA DE OLIVEIRA
Presidente - 1149554 - OSVALDO CHIAVONE FILHO