Removal of Cd2+ ion from diluted aqueous solutions by electrodeposition on reticulated vitreous carbon electrodes

Detalhes bibliográficos
Autor(a) principal: Tramontina,Jucelânia
Data de Publicação: 2002
Outros Autores: Azambuja,Denise S., Piatnicki,Clarisse M. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000400010
Resumo: The electrodeposition of Cd2+ ion was investigated in pH 4.8 sulfuric-sulfate solutions in the presence of dissolved O2. In potentiostatic conditions, using reticulated vitreous carbon (RVC) electrodes of 30, 60 and 100 pores per inch (ppi), high removal efficiency values were achieved in the potential range from --0.90 to --1.10 V for solutions containing 5 and 10 mg L-1 of Cd2+ ion. In this potential range, Cd electrodeposition is a mass transport controlled reaction and the concentration of the metallic ion decays exponentially with time following a pseudo-first order kinetics. For the 30 ppi RVC, the current efficiency and removal efficiency values found were, respectively, 45 % and 96 % for a solution containing 10 mg L-1 of Cd2+ ion after 30 minutes electrolysis at --0.90 V while 33 % and 99% were found for the 60 ppi RVC. The concentration decay of Cd2+ ion in the solution was monitored after each experiment by anodic stripping voltammetry at a hanging mercury drop electrode.
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spelling Removal of Cd2+ ion from diluted aqueous solutions by electrodeposition on reticulated vitreous carbon electrodescadmium removalreticulated vitreous carbonelectrodepositionThe electrodeposition of Cd2+ ion was investigated in pH 4.8 sulfuric-sulfate solutions in the presence of dissolved O2. In potentiostatic conditions, using reticulated vitreous carbon (RVC) electrodes of 30, 60 and 100 pores per inch (ppi), high removal efficiency values were achieved in the potential range from --0.90 to --1.10 V for solutions containing 5 and 10 mg L-1 of Cd2+ ion. In this potential range, Cd electrodeposition is a mass transport controlled reaction and the concentration of the metallic ion decays exponentially with time following a pseudo-first order kinetics. For the 30 ppi RVC, the current efficiency and removal efficiency values found were, respectively, 45 % and 96 % for a solution containing 10 mg L-1 of Cd2+ ion after 30 minutes electrolysis at --0.90 V while 33 % and 99% were found for the 60 ppi RVC. The concentration decay of Cd2+ ion in the solution was monitored after each experiment by anodic stripping voltammetry at a hanging mercury drop electrode.Sociedade Brasileira de Química2002-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000400010Journal of the Brazilian Chemical Society v.13 n.4 2002reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532002000400010info:eu-repo/semantics/openAccessTramontina,JucelâniaAzambuja,Denise S.Piatnicki,Clarisse M. S.eng2002-09-06T00:00:00Zoai:scielo:S0103-50532002000400010Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2002-09-06T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Removal of Cd2+ ion from diluted aqueous solutions by electrodeposition on reticulated vitreous carbon electrodes
title Removal of Cd2+ ion from diluted aqueous solutions by electrodeposition on reticulated vitreous carbon electrodes
spellingShingle Removal of Cd2+ ion from diluted aqueous solutions by electrodeposition on reticulated vitreous carbon electrodes
Tramontina,Jucelânia
cadmium removal
reticulated vitreous carbon
electrodeposition
title_short Removal of Cd2+ ion from diluted aqueous solutions by electrodeposition on reticulated vitreous carbon electrodes
title_full Removal of Cd2+ ion from diluted aqueous solutions by electrodeposition on reticulated vitreous carbon electrodes
title_fullStr Removal of Cd2+ ion from diluted aqueous solutions by electrodeposition on reticulated vitreous carbon electrodes
title_full_unstemmed Removal of Cd2+ ion from diluted aqueous solutions by electrodeposition on reticulated vitreous carbon electrodes
title_sort Removal of Cd2+ ion from diluted aqueous solutions by electrodeposition on reticulated vitreous carbon electrodes
author Tramontina,Jucelânia
author_facet Tramontina,Jucelânia
Azambuja,Denise S.
Piatnicki,Clarisse M. S.
author_role author
author2 Azambuja,Denise S.
Piatnicki,Clarisse M. S.
author2_role author
author
dc.contributor.author.fl_str_mv Tramontina,Jucelânia
Azambuja,Denise S.
Piatnicki,Clarisse M. S.
dc.subject.por.fl_str_mv cadmium removal
reticulated vitreous carbon
electrodeposition
topic cadmium removal
reticulated vitreous carbon
electrodeposition
description The electrodeposition of Cd2+ ion was investigated in pH 4.8 sulfuric-sulfate solutions in the presence of dissolved O2. In potentiostatic conditions, using reticulated vitreous carbon (RVC) electrodes of 30, 60 and 100 pores per inch (ppi), high removal efficiency values were achieved in the potential range from --0.90 to --1.10 V for solutions containing 5 and 10 mg L-1 of Cd2+ ion. In this potential range, Cd electrodeposition is a mass transport controlled reaction and the concentration of the metallic ion decays exponentially with time following a pseudo-first order kinetics. For the 30 ppi RVC, the current efficiency and removal efficiency values found were, respectively, 45 % and 96 % for a solution containing 10 mg L-1 of Cd2+ ion after 30 minutes electrolysis at --0.90 V while 33 % and 99% were found for the 60 ppi RVC. The concentration decay of Cd2+ ion in the solution was monitored after each experiment by anodic stripping voltammetry at a hanging mercury drop electrode.
publishDate 2002
dc.date.none.fl_str_mv 2002-08-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000400010
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000400010
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532002000400010
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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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 Journal of the Brazilian Chemical Society v.13 n.4 2002
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
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reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
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