Banca de QUALIFICAÇÃO: FLAVIA MELO DE LIMA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : FLAVIA MELO DE LIMA
DATA : 26/04/2017
HORA: 15:00
LOCAL: Auditório do Labtam
TÍTULO:

Use of infrared spectroscopy for the evaluation of thiophene adsorption in fuels

PALAVRAS-CHAVES:

Adsorption, Thiophene, Shale, Infrared spectroscopy.

PÁGINAS: 94
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
RESUMO:

Air quality and concern for the environment and population health have influenced vehicle emissions regulations by reducing sulfur levels of fossil fuels. Within this context, the shale (XR) was used as adsorbent for the removal of thiophene in the fuels. Since the use of alternative adsorbent materials is often advantageous as it reduces the environmental impact caused by the disposal of the waste itself. The objective is to find the best adsorption condition of thiophene, using shale as adsorbent exchanged with Cu and Zn from toluene/hexane solutions. Characterization analyzes of the adsorbent were carried out. To evaluate the efficiency, the kinetic study, the experimental design and also the adsorbent regeneration tests, the infrared spectroscopy was used. The FRX and XRD analyzes indicated the presence of Cu and Zn in the shale samples impregnated with the corresponding metal salt which confirms the treatment in which they were submitted. From the infrared spectra and mathematical modeling it was observed that the presence of toluene in the model fuels resulted in a significant drop in the desulphurisation performance using shale as an adsorbent, both the porous structure of the adsorbents and the adsorption parameters are responsible for the performance Of desulfurization, since the increase in temperature and adsorbent concentration favored the spontaneous processes of adsorption of thiophene indicating that the adsorbent materials used have high selectivity and presented good regeneration after thermal treatment, since it is evaluated in the practical application. Therefore, the increase in the use of fossil fuels is an alarming situation and the removal of contaminants has been a major concern in recent decades.

MEMBROS DA BANCA:
Presidente - 1298936 - ANTONIO EDUARDO MARTINELLI
Externo ao Programa - 349770 - DULCE MARIA DE ARAUJO MELO
Externo ao Programa - 1979301 - RENATA MARTINS BRAGA