Iron mining wastes collected from Mariana disaster: Reuse and application as catalyst in a heterogeneous electro-Fenton process
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.jelechem.2019.113330 http://hdl.handle.net/11449/198030 |
Resumo: | A 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. |
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Iron mining wastes collected from Mariana disaster: Reuse and application as catalyst in a heterogeneous electro-Fenton processAzo dyeElectrochemical advanced oxidation processesHeterogeneous electro-FentonIron mining wastesWastewater treatmentA 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.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Apoio à Pesquisa e à Inovação Tecnológica do Estado de SergipeLaboratório de Eletroquímica Ambiental e Aplicada (LEAA) Institute of Chemistry Federal University of Rio Grande do Norte, Lagoa NovaLaboratório de Estudos sobre Matéria Orgânica Natural (LEMON) Chemistry Department Federal University of SergipeNational Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) Institute of Chemistry Unesp, P.O. Box 355National Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) Institute of Chemistry Unesp, P.O. Box 355FAPESP: 2014/50945-4CNPq: 303418/2016-8CNPq: 401519/2014-7CNPq: 446846/2014-7CNPq: 465571/2014-0CAPES: 88881.156371/2017-01Federal University of Rio Grande do NorteUniversidade Federal de Sergipe (UFS)Universidade Estadual Paulista (Unesp)dos Santos, Alexsandro Jhonesda Costa Cunha, GrazieleCruz, Daiane Requião SouzaRomão, Luciane Pimenta Cruz [UNESP]Martínez-Huitle, Carlos Alberto [UNESP]2020-12-12T00:57:03Z2020-12-12T00:57:03Z2019-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.jelechem.2019.113330Journal of Electroanalytical Chemistry, v. 848.1572-6657http://hdl.handle.net/11449/19803010.1016/j.jelechem.2019.1133302-s2.0-85073646374Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Electroanalytical Chemistryinfo:eu-repo/semantics/openAccess2021-10-23T07:59:10Zoai:repositorio.unesp.br:11449/198030Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T07:59:10Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Iron mining wastes collected from Mariana disaster: Reuse and application as catalyst in a heterogeneous electro-Fenton process |
title |
Iron mining wastes collected from Mariana disaster: Reuse and application as catalyst in a heterogeneous electro-Fenton process |
spellingShingle |
Iron mining wastes collected from Mariana disaster: Reuse and application as catalyst in a heterogeneous electro-Fenton process dos Santos, Alexsandro Jhones Azo dye Electrochemical advanced oxidation processes Heterogeneous electro-Fenton Iron mining wastes Wastewater treatment |
title_short |
Iron mining wastes collected from Mariana disaster: Reuse and application as catalyst in a heterogeneous electro-Fenton process |
title_full |
Iron mining wastes collected from Mariana disaster: Reuse and application as catalyst in a heterogeneous electro-Fenton process |
title_fullStr |
Iron mining wastes collected from Mariana disaster: Reuse and application as catalyst in a heterogeneous electro-Fenton process |
title_full_unstemmed |
Iron mining wastes collected from Mariana disaster: Reuse and application as catalyst in a heterogeneous electro-Fenton process |
title_sort |
Iron mining wastes collected from Mariana disaster: Reuse and application as catalyst in a heterogeneous electro-Fenton process |
author |
dos Santos, Alexsandro Jhones |
author_facet |
dos Santos, Alexsandro Jhones da Costa Cunha, Graziele Cruz, Daiane Requião Souza Romão, Luciane Pimenta Cruz [UNESP] Martínez-Huitle, Carlos Alberto [UNESP] |
author_role |
author |
author2 |
da Costa Cunha, Graziele Cruz, Daiane Requião Souza Romão, Luciane Pimenta Cruz [UNESP] Martínez-Huitle, Carlos Alberto [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Federal University of Rio Grande do Norte Universidade Federal de Sergipe (UFS) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
dos Santos, Alexsandro Jhones da Costa Cunha, Graziele Cruz, Daiane Requião Souza Romão, Luciane Pimenta Cruz [UNESP] Martínez-Huitle, Carlos Alberto [UNESP] |
dc.subject.por.fl_str_mv |
Azo dye Electrochemical advanced oxidation processes Heterogeneous electro-Fenton Iron mining wastes Wastewater treatment |
topic |
Azo dye Electrochemical advanced oxidation processes Heterogeneous electro-Fenton Iron mining wastes Wastewater treatment |
description |
A 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. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-09-01 2020-12-12T00:57:03Z 2020-12-12T00:57:03Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.jelechem.2019.113330 Journal of Electroanalytical Chemistry, v. 848. 1572-6657 http://hdl.handle.net/11449/198030 10.1016/j.jelechem.2019.113330 2-s2.0-85073646374 |
url |
http://dx.doi.org/10.1016/j.jelechem.2019.113330 http://hdl.handle.net/11449/198030 |
identifier_str_mv |
Journal of Electroanalytical Chemistry, v. 848. 1572-6657 10.1016/j.jelechem.2019.113330 2-s2.0-85073646374 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Electroanalytical Chemistry |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799964638471782400 |