Iron mining wastes collected from Mariana disaster: Reuse and application as catalyst in a heterogeneous electro-Fenton process

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorFederal University of Rio Grande do Norte-
Autor(es): dc.contributorUniversidade Federal de Sergipe (UFS)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatordos Santos, Alexsandro Jhones-
Autor(es): dc.creatorda Costa Cunha, Graziele-
Autor(es): dc.creatorCruz, Daiane Requião Souza-
Autor(es): dc.creatorRomão, Luciane Pimenta Cruz [UNESP]-
Autor(es): dc.creatorMartínez-Huitle, Carlos Alberto [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:23:19Z-
Data de disponibilização: dc.date.available2022-02-22T00:23:19Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2019-09-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jelechem.2019.113330-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/198030-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/198030-
Descrição: dc.descriptionA simple and environmental friendly strategy for recycling iron mining wastes from the Mariana disaster, one of the biggest environmental disasters in Brazil, involved the synthesis of a magnetic hybrid (HbLM) material at ambient temperature. XRD analysis revealed formation of the cobalt ferrite phase, while FTIR and TGA confirmed the presence of NOM in the structures. The HbLM showed high surface area of about 167.9 m2 g−1. Heterogeneous electro-Fenton (EF)-HbLM process achieved the total decolorization of a model pollutant, the Acid blue 29 diazo dye, after 20 min of electrolysis; while the electrochemical oxidation with hydrogen peroxide generation (EO-H2O2) only led to 62% of color removal. The limit current density was 33.3 mA cm−2, above this value the parasitic reactions overlapped, consequently the efficiency of the process decreased. At pH 3.0, complete color removal was achieved after 20 min of treatment while 60 min were necessary at pH 7.0 (natural pH). This means that, at neutral pH, the process is feasible and the acidification of the medium is not necessary to promote the main reactions. This work provides an example of a system to remove toxic contaminants from wastewater following the principles of green chemistry and industrial symbiosis, with sequential reuse of wastes and the generation of new raw materials with added commercial and technological values.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionFundação de Apoio à Pesquisa e à Inovação Tecnológica do Estado de Sergipe-
Descrição: dc.descriptionLaboratório de Eletroquímica Ambiental e Aplicada (LEAA) Institute of Chemistry Federal University of Rio Grande do Norte, Lagoa Nova-
Descrição: dc.descriptionLaboratório de Estudos sobre Matéria Orgânica Natural (LEMON) Chemistry Department Federal University of Sergipe-
Descrição: dc.descriptionNational Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) Institute of Chemistry Unesp, P.O. Box 355-
Descrição: dc.descriptionNational Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) Institute of Chemistry Unesp, P.O. Box 355-
Descrição: dc.descriptionFAPESP: 2014/50945-4-
Descrição: dc.descriptionCNPq: 303418/2016-8-
Descrição: dc.descriptionCNPq: 401519/2014-7-
Descrição: dc.descriptionCNPq: 446846/2014-7-
Descrição: dc.descriptionCNPq: 465571/2014-0-
Descrição: dc.descriptionCAPES: 88881.156371/2017-01-
Idioma: dc.languageen-
Relação: dc.relationJournal of Electroanalytical Chemistry-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAzo dye-
Palavras-chave: dc.subjectElectrochemical advanced oxidation processes-
Palavras-chave: dc.subjectHeterogeneous electro-Fenton-
Palavras-chave: dc.subjectIron mining wastes-
Palavras-chave: dc.subjectWastewater treatment-
Título: dc.titleIron mining wastes collected from Mariana disaster: Reuse and application as catalyst in a heterogeneous electro-Fenton process-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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