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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/41903
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dc.creatorSandro Luiz Barbosa dos Santospt_BR
dc.creatorMilton de Souza Freitaspt_BR
dc.creatorWallans Torres Pio dos Santospt_BR
dc.creatorDavid Lee Nelsonpt_BR
dc.creatorMaria Betânia de Freitas Marquespt_BR
dc.creatorStanlei Ivair Kleinpt_BR
dc.creatorGiuliano Cesar Clososkipt_BR
dc.creatorFranco Jazon Cairespt_BR
dc.creatorEduardo José Nassarpt_BR
dc.creatorLucas Dimarô Zanattapt_BR
dc.creatorFoster Aryi Agblevorpt_BR
dc.creatorCarlos Alberto Mateus Afonsopt_BR
dc.creatorAdriano Cesar de Morais Baronipt_BR
dc.date.accessioned2022-05-23T21:05:00Z-
dc.date.available2022-05-23T21:05:00Z-
dc.date.issued2020-05-25-
dc.identifier.doi10.1007/s13399-020-00745-7pt_BR
dc.identifier.issn2190-6823pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/41903-
dc.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.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentFAR - DEPARTAMENTO DE ALIMENTOSpt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofBiomass Conversion and Biorefinerypt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectPurification of crude glycerol by adsorptionpt_BR
dc.subjectPrepared charcoalpt_BR
dc.subjectMicroporous-mesoporous charcoalpt_BR
dc.subjectEndocarp pulp of Acrocomia aculeatapt_BR
dc.subject.otherTecnologia de alimentospt_BR
dc.subject.otherCarvão ativadopt_BR
dc.subject.otherGlicerolpt_BR
dc.subject.otherMacaúbapt_BR
dc.subject.otherAcrocomia aculeatapt_BR
dc.titlePreparation of activated charcoal from Acrocomia aculeata for purification of pretreated crude glycerolpt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://link.springer.com/article/10.1007/s13399-020-00745-7pt_BR
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