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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/61166
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dc.creatorTiago Guimarãespt_BR
dc.creatorVivian Andrade Lucianopt_BR
dc.creatorMayara Stefani Ventura Silvapt_BR
dc.creatorAna Paula de Carvalho Teixeirapt_BR
dc.creatorMarcelo Moreira da Costapt_BR
dc.creatorRenata Pereira Lopespt_BR
dc.date.accessioned2023-11-20T20:44:49Z-
dc.date.available2023-11-20T20:44:49Z-
dc.date.issued2022-
dc.citation.volume17pt_BR
dc.citation.spage100645pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.enmm.2022.100645pt_BR
dc.identifier.issn2215-1532pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/61166-
dc.description.resumoIn this work, the removal of methyl orange (MOR) and methylene blue (MBL) by composites based on iron supported on biochar was evaluated. The biochar was produced from pyrolysis of arabica coffee (Coffea arabica) husks, following Fe(II) adsorption. The adsorbed Fe(II) was submitted to chemical reduction, via borohydride, producing zero-valent iron nanoparticles (nZVI/BC). This material showed point of zero charge (pHPCZ) of 8.6. Kinetic studies indicated that the pseudo-second order model was the best fit to experimental data for both dyes. The maximum removal capacities were 57.1 and 62.1 mg g−1 for MOR and MBL, respectively. The material can be used in three different cycles, with no loss efficiency (>80% for MOR and >90% for MBL). During dye removal, two processes occur, adsorption and degradation, the first being predominant. Thus, to maximize the efficiency of both processes, it was suggested the use of a sequence, that is, adsorption followed by degradation of desorbed solution. Such processes are feasible because the effluent volume is significantly lower, reducing process costs. The results, therefore, demonstrated that nZVI/BC has potential to be used in dye removal from aqueous systems in a quick and efficient manner.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.ispartofEnvironmental Nanotechnology, Monitoring & Managementpt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectTextiles pollutantspt_BR
dc.subjectResidual waterpt_BR
dc.subjectBiomasspt_BR
dc.subjectAdsorption / degradationpt_BR
dc.subject.otherPoluentespt_BR
dc.subject.otherAgua - Purificação - Adsorçãopt_BR
dc.subject.otherBiomassapt_BR
dc.subject.otherAdsorçãopt_BR
dc.subject.otherÁguas residuais - Purificação - Remoção de corpt_BR
dc.titleBiochar-iron composites: an efficient material for dyes removalpt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S2215153222000058pt_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
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