Banca de QUALIFICAÇÃO: RODRIGO YAGO COSTA CARVALHO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : RODRIGO YAGO COSTA CARVALHO
DATA : 23/02/2022
HORA: 08:30
LOCAL: Videoconferência
TÍTULO:

PRODUCTION OF FORMIC ACID FROM THE SELECTIVE ELECTROOXIDATION OF GLYCEROL IN DSA® OF Ti/TiO2-RuO2-IrO2.

PALAVRAS-CHAVES:

Glycerol; Selective Electrooxidation; Electrocatalysts; Dimensionally Stable Anodes.

PÁGINAS: 41
GRANDE ÁREA: Outra
ÁREA: Ciências Ambientais
RESUMO:

During the production of biodiesel, large volumes of residues containing glycerol are generated, resulting from the transesterification reaction of triglycerides. Part of this co-product is used by the industrial sector, but a representative fraction ends up being inappropriately discarded or stored, triggering several environmental and socioeconomic problems. As an alternative, we have the selective electrooxidation of glycerol in anodes coated with metallic electrocatalysts, which aims to convert it into products with greater added value. It is a subarea of Environmental Electrochemistry that is in constant and full development, but which is still surrounded by challenges, especially in relation to the high cost of some catalysts for commercialization and adaptation on a possible industrial scale. Anodes coated with metallic oxides have shown great potential for the electrooxidation of organic compounds, but the literature does not include studies involving glycerol, including in relation to its electroconversion into products with higher added value. This project seeks to reduce this gap, contributing to the state of the art on the application of dimensionally stable anodes (Ti/TiO2-RuO2-IrO2) for the selective electrooxidation of glycerol. The procedure was optimized by studies of current density (60 mA cm‒2), hydrogenion potential (pH 4), temperature (30 °C), concentration of the supporting electrolyte (0.01 mol L‒1 Na2SO4) and treatment (10 h). From the selection of the ideal parameters, a conversion rate above 40% of glycerol in formic acid - major product was found. The energy cost associated with the glycerol electrooxidation reaction under the established conditions was R$ 12.09, that is, the proposed procedure associates efficiency and economic viability. The selective electrooxidation of glycerol in Ti/TiO2-RuO2-IrO2 can also be a more sustainable alternative for the treatment of effluents enriched with this polyalcohol.

MEMBROS DA BANCA:
Externa à Instituição - ALLANA KELLEN LIMA SANTOS PEREIRA - UFCA
Externo ao Programa - 12768 - KEURISON FIGUEREDO MAGALHÃES
Presidente - 007.972.984-36 - THIAGO MIELLE BRITO FERREIRA - UFCA