Eletrocoagulação/eletrofloculação para tratamento de águas residuárias: eletrodos não convencionais e acoplamento de técnicas
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Química Nova (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422022000400410 |
Resumo: | Electrocoagulation-electroflotation (EC) technology is a well-known wastewater treatment process that consists of applying electric current to remove contaminants without requiring the addition of chemicals that can generate secondary pollutants. Once they are the most widely used, iron and aluminum electrodes are considered conventional, however they leave unwanted residues, which will give a yellowish-brown color to the treated water, in the case of iron electrodes, and are associated with potential risks to human health, in the case of aluminum electrodes. In this regard, the study of non-conventional electrodes capable of circumventing those problems is essential for the development of more effective wastewater treatments. In this review article, a brief presentation will be made of the history of electrofloculation followed by a brief discussion of conventional electrodes and the mechanisms that govern the processes of removing contaminants by the electrocoagulation process. Subsequently, the non-conventional electrodes reported in the literature up to the present moment will be presented, as well as their potential, applications and performance when applied in water treatment. Finally, will be discussed the coupling of the electroflotation with other water treatment techniques towards achieving a better-quality reuse water. |
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Eletrocoagulação/eletrofloculação para tratamento de águas residuárias: eletrodos não convencionais e acoplamento de técnicasnickel electrodesadvanced oxidative processtitanium electrodeszinc electrodessteel electrodeselectrochemistryElectrocoagulation-electroflotation (EC) technology is a well-known wastewater treatment process that consists of applying electric current to remove contaminants without requiring the addition of chemicals that can generate secondary pollutants. Once they are the most widely used, iron and aluminum electrodes are considered conventional, however they leave unwanted residues, which will give a yellowish-brown color to the treated water, in the case of iron electrodes, and are associated with potential risks to human health, in the case of aluminum electrodes. In this regard, the study of non-conventional electrodes capable of circumventing those problems is essential for the development of more effective wastewater treatments. In this review article, a brief presentation will be made of the history of electrofloculation followed by a brief discussion of conventional electrodes and the mechanisms that govern the processes of removing contaminants by the electrocoagulation process. Subsequently, the non-conventional electrodes reported in the literature up to the present moment will be presented, as well as their potential, applications and performance when applied in water treatment. Finally, will be discussed the coupling of the electroflotation with other water treatment techniques towards achieving a better-quality reuse water.Sociedade Brasileira de Química2022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422022000400410Química Nova v.45 n.4 2022reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.21577/0100-4042.20170846info:eu-repo/semantics/openAccessGrecco,Luís Henrique AraújoSouza,Bárbara Camila de AraújoZanoni,Maria Valnice Boldrinpor2022-06-06T00:00:00Zoai:scielo:S0100-40422022000400410Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2022-06-06T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Eletrocoagulação/eletrofloculação para tratamento de águas residuárias: eletrodos não convencionais e acoplamento de técnicas |
title |
Eletrocoagulação/eletrofloculação para tratamento de águas residuárias: eletrodos não convencionais e acoplamento de técnicas |
spellingShingle |
Eletrocoagulação/eletrofloculação para tratamento de águas residuárias: eletrodos não convencionais e acoplamento de técnicas Grecco,Luís Henrique Araújo nickel electrodes advanced oxidative process titanium electrodes zinc electrodes steel electrodes electrochemistry |
title_short |
Eletrocoagulação/eletrofloculação para tratamento de águas residuárias: eletrodos não convencionais e acoplamento de técnicas |
title_full |
Eletrocoagulação/eletrofloculação para tratamento de águas residuárias: eletrodos não convencionais e acoplamento de técnicas |
title_fullStr |
Eletrocoagulação/eletrofloculação para tratamento de águas residuárias: eletrodos não convencionais e acoplamento de técnicas |
title_full_unstemmed |
Eletrocoagulação/eletrofloculação para tratamento de águas residuárias: eletrodos não convencionais e acoplamento de técnicas |
title_sort |
Eletrocoagulação/eletrofloculação para tratamento de águas residuárias: eletrodos não convencionais e acoplamento de técnicas |
author |
Grecco,Luís Henrique Araújo |
author_facet |
Grecco,Luís Henrique Araújo Souza,Bárbara Camila de Araújo Zanoni,Maria Valnice Boldrin |
author_role |
author |
author2 |
Souza,Bárbara Camila de Araújo Zanoni,Maria Valnice Boldrin |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Grecco,Luís Henrique Araújo Souza,Bárbara Camila de Araújo Zanoni,Maria Valnice Boldrin |
dc.subject.por.fl_str_mv |
nickel electrodes advanced oxidative process titanium electrodes zinc electrodes steel electrodes electrochemistry |
topic |
nickel electrodes advanced oxidative process titanium electrodes zinc electrodes steel electrodes electrochemistry |
description |
Electrocoagulation-electroflotation (EC) technology is a well-known wastewater treatment process that consists of applying electric current to remove contaminants without requiring the addition of chemicals that can generate secondary pollutants. Once they are the most widely used, iron and aluminum electrodes are considered conventional, however they leave unwanted residues, which will give a yellowish-brown color to the treated water, in the case of iron electrodes, and are associated with potential risks to human health, in the case of aluminum electrodes. In this regard, the study of non-conventional electrodes capable of circumventing those problems is essential for the development of more effective wastewater treatments. In this review article, a brief presentation will be made of the history of electrofloculation followed by a brief discussion of conventional electrodes and the mechanisms that govern the processes of removing contaminants by the electrocoagulation process. Subsequently, the non-conventional electrodes reported in the literature up to the present moment will be presented, as well as their potential, applications and performance when applied in water treatment. Finally, will be discussed the coupling of the electroflotation with other water treatment techniques towards achieving a better-quality reuse water. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422022000400410 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422022000400410 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
10.21577/0100-4042.20170846 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Química Nova v.45 n.4 2022 reponame:Química Nova (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Química Nova (Online) |
collection |
Química Nova (Online) |
repository.name.fl_str_mv |
Química Nova (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
quimicanova@sbq.org.br |
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1750318121849192448 |