Banca de DEFESA: MARCONI FERREIRA DE MEDEIROS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MARCONI FERREIRA DE MEDEIROS
DATE: 09/03/2020
TIME: 14:00
LOCAL: Auditório do NUPEG
TITLE:

Hydrosterification of waste frying oils in supercritical ethanol for biodiesel production.

KEY WORDS:

Biodiesel, waste frying oils, supercritical ethanol, hydrosterification, continuous flow reactor, experimental design.

PAGES: 85
BIG AREA: Engenharias
AREA: Engenharia Química
SUMMARY:

The use of frying oils presents important characteristics for any proposal that seeks economic viability and is 

environmentally friendly to the environment for the production of biodiesel. Economically, the residual oils are

 cheap because they are raw materials of low quality and inexpensive compared to the oils commercialized in 

Brazil today. Regarding the environmental aspect, studies on the environmental impact of incorrect disposal of 

discarded oils in the waterof rivers or surface aquifers show that one liter of discarded oil can pollute about 500,000

 liters of water. Another very serious problem of incorrect disposal of waste oils is the inlays in pipelines and pipelines

 of sewage networks in large urban centers. The accumulation of these wastes produces the formation of a biomass

 (solid waste and microorganisms) that causes restrictions and difficulties in the effluent flows to the treatment 

stations and produce clogging and generation of odors exhaled by the decomposition of this material. These 

problems cause great economic impacts in the treatment and recovery of these water sources, cleaning, replacement

 and clearing of these public sanitation equipment. In view of these findings, it was proposed the development of a 

reactive route that could use cheap and low quality raw materials such as residual oils, that would be economically 

feasible and that would help in reducing the environmental impacts produced by the incorrect disposal of these oils. 

We performed reactions of frying oils with constant pressure of 100 bar, oil / ethanol molar ratios of 1/10 and 1/30 

and mass percentages of water of 10%, 20% and 30%, temperatures of 250 ° C, 290 ° C and 310 ° C and residence

 times of 15 min, 30 min and 45 min in continuous flow tubular reactor. The results obtained in these reactions 

showed conversion rates of total esters (biodiesel) good results, comparable with the literature. The results obtained

 showed that the experiments with higher temperatures (290 ° C and 310 ° C) and residence time (45 min) showed

 yields of 66% and 71% respectively.

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