Preparation of activated charcoal from Acrocomia aculeata for purification of pretreated crude glycerol

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dc.creatorSandro Luiz Barbosa dos Santos
dc.creatorMilton de Souza Freitas
dc.creatorWallans Torres Pio dos Santos
dc.creatorDavid Lee Nelson
dc.creatorMaria Betânia de Freitas Marques
dc.creatorStanlei Ivair Klein
dc.creatorGiuliano Cesar Clososki
dc.creatorFranco Jazon Caires
dc.creatorEduardo José Nassar
dc.creatorLucas Dimarô Zanatta
dc.creatorFoster Aryi Agblevor
dc.creatorCarlos Alberto Mateus Afonso
dc.creatorAdriano Cesar de Morais Baroni
dc.date.accessioned2022-05-23T21:05:00Z
dc.date.accessioned2025-09-09T01:02:37Z
dc.date.available2022-05-23T21:05:00Z
dc.date.issued2020-05-25
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.identifier.doi10.1007/s13399-020-00745-7
dc.identifier.issn2190-6823
dc.identifier.urihttps://hdl.handle.net/1843/41903
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofBiomass Conversion and Biorefinery
dc.rightsAcesso Restrito
dc.subjectTecnologia de alimentos
dc.subjectCarvão ativado
dc.subjectGlicerol
dc.subjectMacaúba
dc.subjectAcrocomia aculeata
dc.subject.otherPurification of crude glycerol by adsorption
dc.subject.otherPrepared charcoal
dc.subject.otherMicroporous-mesoporous charcoal
dc.subject.otherEndocarp pulp of Acrocomia aculeata
dc.titlePreparation of activated charcoal from Acrocomia aculeata for purification of pretreated crude glycerol
dc.typeArtigo de periódico
local.description.resumoActivated charcoal was prepared from Acrocomia aculeata (macaúba) endocarp by ZnCl2 activation and then used for the adsorptive purification of pretreated crude glycerol (CG) containing pigments, such as β-carotene. The pretreatment of glycerol involved filtration of the K3PO4 formed by the addition of H3PO4 to the crude glycerol containing KOH. A mixture of 1.38:1 w/w of ZnCl2:Acrocomia aculeata pulp was heated at 120 °C with stirring for 24 h. The mixture was activated by heating at 600 °C for 3 h. The activated charcoal was cooled to 25 °C, washed with a 1:1 mixture of methanol and water (100 mL) and heated at 150 °C for 2 h. The surface properties of the activated charcoal (surface area 627 m2 g−1, pore volume 0.39 m3 g−1, Bronsted sites 118.23 μmol g−1, and Lewis sites 104.86 μmol g−1) and the adsorption capacity for impurities in H3PO4-pretreated crude glycerol were investigated. The activated charcoal exhibited the most suitable surface properties for the purification of pretreated crude glycerol, attaining a 95.99% glycerol concentration (by GC) using 10 g/L with gravity filtration through a column at room temperature over a 48-h period. The purified glycerol was characterized by GC/MS, 1H- and 13C-NMR, and DSC and TG analyses. The activated charcoal was regenerated by washing with methanol and hexane and heating to 150 °C for 5 h. The activated charcoal could be re-used three times to remove all of the pigments before it was necessary to re-activate the charcoal by heating with ZnCl2.
local.publisher.countryBrasil
local.publisher.departmentFAR - DEPARTAMENTO DE ALIMENTOS
local.publisher.initialsUFMG
local.url.externahttps://link.springer.com/article/10.1007/s13399-020-00745-7

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