Banca de QUALIFICAÇÃO: SAULO HENRIQUE GOMES DE AZEVÊDO
Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.DISCENTE : SAULO HENRIQUE GOMES DE AZEVÊDO
DATA : 27/07/2017
HORA: 14:30
LOCAL: SALA DE AULA DO NUPEG
TÍTULO:
Production of biodiesel from cotton oil under supercritical conditions
PALAVRAS-CHAVES:
Biodiesel; Cottonseed Oil; Gossypium hirsutum L.; Transesterification; Interesterification; Supercritical.
PÁGINAS: 120
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Química
RESUMO:
In the global energy context, biodiesel has emerged as an important source of renewable energy, mainly due to its ease of production and the variety of raw material available worldwide. Specifically in Brazil, the biodiesel industry has presented significant growth in production, due to the federal laws that obligate the mixing of B100 (biodiesel) with fossil diesel. Given the importance of this industry to Brazil, this work sought to evaluate the potential of cottonseed oil for the production of biodiesel by transesterification techniques using ethanol and interesterification (methyl acetate). The reactions occurred in supercritical conditions of temperature and pressure, in continuous mode. The maximum yield obtained by the transesterification was 75.05 %, at the pressure of 150 and 200 bar, 375 ° C, molar ratio of oil: ethanol 1:40, and reaction time 40 and 30 min, respectively. In the route using methyl acetate, the highest yield was 85.80 %, obtained in 35 min, mass ratio of oil: methyl acetate 1:3, pressure 200 bar and 350 ° C, using 20 % aqueous solution of acetic acid (26 %). High values of biodiesel decomposition were observed in both routes due to the high concentrations of polyunsaturated triglycerides in the oil and to the severe process conditions.
MEMBROS DA BANCA:
Presidente - 348100 - ELISA MARIA BITTENCOURT DUTRA DE SOUSA
Externo ao Programa - 277058 - GILSON GOMES DE MEDEIROS
Interno - 1670497 - HUMBERTO NEVES MAIA DE OLIVEIRA
Interno - 1547970 - JACKSON ARAUJO DE OLIVEIRA