Banca de QUALIFICAÇÃO: KELVIN GAMA GUIMARÃES

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : KELVIN GAMA GUIMARÃES
DATA : 22/02/2019
HORA: 08:00
LOCAL: Sala de Aula do NUPEG
TÍTULO:

Transesterification of Sesame oil in a batch-type process using supercritical ethanol

PALAVRAS-CHAVES:

Biodiesel, sesame, transesterification, supercritical conditions      

PÁGINAS: 83
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Química
RESUMO:

With the increase of environmental problems generated by using fossil fuels the search for more renewable and less harmful alternatives have increased, thereby biodiesel rise as a biodegradable option originated of natural sources. Biodiesel can be defined as alkyl esters formed in a transesterification reaction between an alcohol and triglyceride, usually vegetable oils. In Brazil, soybean oil is the raw material most used in biodiesel production, however it is necessary to search for other oilseeds to diversify production, so sesame oil appears as likely raw material. Sesame has a high oil content in its seed and is suitable for warmer and drier climate. The main way to produce biodiesel is transesterification using basic catalysis, this kind of process has drawbacks about water content in the reaction and in the product purification. Transesterification using alcohol in supercritical conditions does not need catalyst becoming a simpler method. In this work, it is proposed utilize sesame oil as triglyceride source in transesterification reaction with ethyl alcohol in supercritical conditions. Temperature, reaction time and molar ratio oil: alcohol were studied as reaction parameters. The temperature range was 260-290 ℃, reaction time between 7,5-30 minutes while molar ratio varied of 1:36-1:48. In the end, the best ethyl esters yield was 56,62% at temperature of 290 ℃, in a time of 30 minutes and molar ratio of 1:48. 

MEMBROS DA BANCA:
Interno - 2929066 - ANDRE LUIS LOPES MORIYAMA
Presidente - 1670497 - HUMBERTO NEVES MAIA DE OLIVEIRA
Externo à Instituição - SAULO HENRIQUE GOMES DE AZEVÊDO - IFRN