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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/57047
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dc.creatorTiago Guimarãespt_BR
dc.creatorAna Paula de Carvalho Teixeirapt_BR
dc.creatorAndré Fernando de Oliveirapt_BR
dc.creatorRenata Pereira Lopespt_BR
dc.date.accessioned2023-07-27T12:21:20Z-
dc.date.available2023-07-27T12:21:20Z-
dc.date.issued2020-
dc.citation.volume44pt_BR
dc.citation.spage3310pt_BR
dc.citation.epage3322pt_BR
dc.identifier.doihttps://doi.org/10.1039/C9NJ04144Cpt_BR
dc.identifier.issn1144-0546pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/57047-
dc.description.resumoIn this work biochars were synthesized from arabica coffee husks and were used for Fe(II) adsorption by a Pirolise process at 350 and 600 °C. The in natura material before and after pyrolysis exhibited an amorphous structure, showing C, H, and N levels, for both biochars, of around 70, 0.25, and 2.5% (m/m), respectively. The Point of Zero Charge (PZC) was 9.5 and 10.2 for BIO350 and BIO600, respectively. FTIR spectra and thermogravimetric analyses confirmed the presence of OH, COOH, and SO3H groups on the coffee husks’ surfaces as well as the loss of these groups on the biochars’ surfaces, with the biochars being more stable than the coffee husks. The synthesized biochars presented amorphous characteristics before the adsorption process of iron(II), but turned into nail-like structures after the Fe(II) adsorption studies. The Langmuir isotherm model and pseudo-second order kinetic model were the best models fitted to the experimental data and were evaluated based on the coefficient of determination. Both biochars demonstrated similar efficiencies in Fe(II) removal, with a maximum adsorption capacity of about 110 mg of Fe(II) per gram of biochar. The adsorption thermodynamics indicates a spontaneous and favorable process, thus justifying the use of biochars for Fe(II) adsorption in aqueous solution.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.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)pt_BR
dc.description.sponsorshipOutra Agênciapt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE QUÍMICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofNew Journal of Chemistrypt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectBiocharspt_BR
dc.subjectArabica coffee huskspt_BR
dc.subjectAdsorptionpt_BR
dc.subjectPyrolysispt_BR
dc.subjectFTIR spectrapt_BR
dc.subjectThermogravimetric analysespt_BR
dc.subjectFe(II) removalpt_BR
dc.subjectThermodynamicspt_BR
dc.subject.otherÁgua - Purificação - Adsorçãopt_BR
dc.subject.otherPirólisept_BR
dc.subject.otherCafé - Resíduospt_BR
dc.subject.otherBiomassa vegetalpt_BR
dc.subject.otherTermogravimetriapt_BR
dc.subject.otherEspectroscopia de infravermelhopt_BR
dc.subject.otherRaios X - Difraçãopt_BR
dc.subject.otherFerropt_BR
dc.titleBiochars obtained from arabica coffee husk by a pyrolysis process: characterization and application in the Fe(ii) removal in aqueous systemspt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://pubs.rsc.org/en/content/articlelanding/2020/NJ/C9NJ04144Cpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-5766-7821pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4985-7502pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-1049-8300pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-4158-6098pt_BR
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