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

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