Banca de DEFESA: JONATHAN NASPER BENTO DA SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : JONATHAN NASPER BENTO DA SILVA
DATE: 31/10/2022
TIME: 14:00
LOCAL: AUDITÓRIO DO NUPEG
TITLE:

PRODUCTION OF BIODIESEL BY SUPERCRITICAL TRANSESTERIFICATION OF SESAME OIL IN A CONTINUOUS-FLOW REACTOR

KEY WORDS:

Biodiesel; Sesame oil; Transesterification; Continuous reaction; Supercritical conditions.

PAGES: 60
BIG AREA: Engenharias
AREA: Engenharia Química
SUBÁREA: Tecnologia Química
SPECIALTY: Petróleo e Petroquímica
SUMMARY:

In view of the environmental conditions in the world today, the demand for renewable energy sources has increased more and more due to the need to reduce the pollution generated to the environment when using fossil fuels. Biodiesel stands out as one of these new energy sources due to its great variety in the raw materials that can be used in its production and also because of its biodegradability. The sesame seed presents in its Composition a high oil content and its cultivation is favorable due to its ability to adapt to regions with a dry climate. Initially used in the food industry, the oleaginous seed shows potential as a natural source for biodiesel production, and this process has received substantial incentive through tax benefits on the purchase of biofuel from this plant. The transesterification reaction of sesame oil under supercritical conditions appears as an alternative to the most common method of biodiesel production, the catalytic transesterification, because there is no need to use a catalyst in the reaction, resulting in a simplification and possible savings in the process. This study used sesame oil and ethyl alcohol to produce biodiesel under supercritical conditions. The sesame oil physicochemical properties were determined, such as: density, acidity index, fatty acid content, viscosity and humidity. In the assays a continuous flow reactor of 15 mL volume was used, the system pressure was kept at 100 bar, varying the reaction temperature in the range 310-390 °C, with a residence time of 15-45 min and a molar ratio oil:ethanol of 1:30-1:50. From the results obtained in the variation of the operational parameters a statistical analysis was performed in order to verify the influence on the reaction yield. The best result obtained
was 87.45 %, at a temperature of 390 °C, residence time of 45 min and molar ratio oil:ethanol of 1:40. The statistical analysis revealed a greater influence of temperature and residence time on the results.

COMMITTEE MEMBERS:
Externo à Instituição - ANDRE EZEQUIEL GOMES DO NASCIMENTO
Interno - 1670497 - HUMBERTO NEVES MAIA DE OLIVEIRA
Externo à Instituição - SAULO HENRIQUE GOMES DE AZEVÊDO - IFRN