Environmentally friendly new catalyst using waste alkaline solution from aluminum production for the synthesis of biodiesel in aqueous medium

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dc.creatorSandro Luiz Barbosa dos Santos
dc.creatorDavid Lee Nelson
dc.creatorLucas Paconio da Silva
dc.creatorPedro Moises
dc.creatorWallans Torres Pio dos Santos
dc.creatorAlexandre Pereira Wentz
dc.creatorFernando Luiz Pellegrini Pessoa
dc.creatorFoster Aryi Agblevor
dc.creatorDaniel Armelim Bortoleto
dc.creatorMaria Betânia de Freitas Marques
dc.creatorLucas Dimarô Zanatta
dc.date.accessioned2025-09-03T12:23:32Z
dc.date.accessioned2025-09-09T00:48:14Z
dc.date.available2025-09-03T12:23:32Z
dc.date.issued2023-06-07
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.format.mimetypepdf
dc.identifier.doi10.3390/bioengineering10060692
dc.identifier.issn23065354
dc.identifier.urihttps://hdl.handle.net/1843/84803
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.rightsAcesso Aberto
dc.subjectBiodiesel
dc.subjectCatalisador ecológico
dc.subject.otherProcessos ecologicamente corretos
dc.subject.otherResíduo de bayer
dc.subject.otherGerenciamento de resíduos
dc.subject.otherCatalisador básico
dc.subject.otherContaminantes
dc.subject.otherLama vermelha
dc.subject.otherÉster metílico de ácido graxo
dc.titleEnvironmentally friendly new catalyst using waste alkaline solution from aluminum production for the synthesis of biodiesel in aqueous medium
dc.typeArtigo de periódico
local.citation.epage12
local.citation.issue6
local.citation.spage1
local.citation.volume10
local.description.resumoRed mud (RM) is composed of a waste alkaline solution (pH = 13.3) obtained from the production of alumina. It contains high concentrations of hematite (Fe2O3), goethite (FeOOH), gibbsite [Al(OH)3], a boehmite (AlOOH), anatase (Tetragonal–TiO2), rutile (Ditetragonal dipyramidal–TiO2), hydrogarnets [Ca3Al2(SiO4)3−x(OH)4x], quartz (SiO2), and perovskite (CaTiO3). It was shown to be an excellent catalytic mixture for biodiesel production. To demonstrate the value of RM, an environmentally friendly process of transesterification in aqueous medium using waste cooking oil (WCO), MeOH, and waste alkaline solution (WAS) obtained from aluminum production was proposed. Triglycerides of WCO reacted with MeOH at 60 °C to yield mixtures of fatty acid methyl esters (FAMEs) in the presence of 0.019% (w/w) WAS/WCO using the WAS (0.204 mol L−1, predetermined by potentiometric titration) from aluminum production by the Bayer process. The use of the new catalyst (WAS) resulted in a high yield of the products (greater than 99% yield).
local.publisher.countryBrasil
local.publisher.departmentFAR - DEPARTAMENTO DE ALIMENTOS
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.mdpi.com/2306-5354/10/6/692

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