Title:	Esterifcation of free fat acids from waste cooking oil using BiVO4 photocatalysts under visible irradiation.
Authors:	CRISOSTOMO, C. A. B. DAMACENO, F. B. MESQUITA, J. P. de TORRES, J. A. RIBEIRO, C. RIBEIRO, R. A. LOPES, O. F. AVANSI JR, W. ALMEIDA, J. S. MOURÃO, H. A. de J. L.
Affiliation:	FEDERAL UNIVERSITY OF JEQUITINHONHA AND MUCURI VALLEYS (UFVJM); FEDERAL UNIVERSITY OF JEQUITINHONHA AND MUCURI VALLEYS (UFVJM); FEDERAL UNIVERSITY OF JEQUITINHONHA AND MUCURI VALLEYS (UFVJM); CAUE RIBEIRO DE OLIVEIRA, CNPDIA; FEDERAL INSTITUTE OF NORTHERN MINAS GERAIS (IFNMG); FEDERAL UNIVERSITY OF UBERLÂNDIA (UFU); FEDERAL UNIVERSITY OF SÃO CARLOS (UFSCAR); FEDERAL UNIVERSITY OF JEQUITINHONHA AND MUCURI VALLEYS (UFVJM); FEDERAL UNIVERSITY OF JEQUITINHONHA AND MUCURI VALLEYS (UFVJM).
Date Issued:	2025
Citation:	Reaction Kinetics, Mechanisms and Catalysis, v. 138, 2025.
Pages:	1453–1467
Description:	Herein, we report the FFA photoesterifcation of waste cooking oil (WCO) using a BiVO4 and visible irradiation. Despite undergoing treatments under diferent temperatures (120 °C and 150 °C), both synthesized samples presented high crystallinity and similar morphologies, corresponding to a mixture composed of the scheelite structure of monoclinic and tetragonal phases of BiVO4. The FFA conversions with the photocatalysts were signifcantly higher than the non-catalytic reactions. The gas chromatography analysis shows that the products are composed of a mixture of ethyl esters and a low amount of fatty acid ethyl esters (FAEE). The results demonstrate that the photoesterifcation of FFA of non-edible vegetable oils can be driven by BiVO4 photocatalysts under visible irradiation, at regular temperature, reduced ethanol/oil molar ratio, and
Keywords:	Bismuth vanadate Waste cooking oil Free-fat acids Photoesterifcation Ethyl esters Fatty acid ethyl esters
DOI:	https://doi.org/10.1007/s11144-025-02808-0
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPDIA)