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Materiais à base de óxido de ferro para oxidação de compostos presentes no efluente da despolpa do café

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dc.contributor.author Gonçalves, Maraísa
dc.contributor.author Guerreiro, Mário César
dc.contributor.author Oliveira, Luiz Carlos Alves
dc.contributor.author Rocha, Cristian Luciana da
dc.date.accessioned 2022-04-07T10:45:56Z
dc.date.available 2022-04-07T10:45:56Z
dc.date.issued 2008
dc.identifier.citation GONÇALVES, M. et al. Materiais à base de óxido de ferro para oxidação de compostos presentes no efluente da despolpa do café. Química Nova, São Paulo, v. 31, n. 7, p. 1636-1640, 2008. pt_BR
dc.identifier.issn 1678-7064
dc.identifier.uri https://doi.org/10.1590/S0100-40422008000700007 pt_BR
dc.identifier.uri http://www.sbicafe.ufv.br/handle/123456789/13443
dc.description.abstract Materials based on pure iron oxide and impregnated with niobia (Nb2O5) were prepared. Their catalytic activities were tested on the oxidation of compounds present in the wastewater from the processing of coffee berries. Particularly caffeine and catechol were tested. The oxidation reactions were carried out with the following systems (i) UV/H2O2, (ii) photo-Fenton and (iii) heterogeneous Fenton. All materials were characterized with X-ray diffraction, Mössbauer and infrared spectroscopy. Iron was mainly in the forms of goethite and maghemite. The oxidation kinetics were monitored by UV-vis and the oxidation products were monitored by mass spectrometry. The photo-Fenton reaction presented highest oxidation efficiency, removing 98% of all caffeine and catechol contents. pt_BR
dc.format pdf pt_BR
dc.language.iso pt_BR pt_BR
dc.publisher Sociedade Brasileira de Química pt_BR
dc.relation.ispartofseries Química Nova;v.31, n.7, 2008
dc.rights Open Access pt_BR
dc.subject Oxidation pt_BR
dc.subject Niobia pt_BR
dc.subject Iron oxide pt_BR
dc.subject.classification Cafeicultura::Resíduos e subprodutos do café pt_BR
dc.title Materiais à base de óxido de ferro para oxidação de compostos presentes no efluente da despolpa do café pt_BR
dc.type Artigo pt_BR

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