Removal of Cd+2 from aqueous solutions onto polypyrrole coated reticulated vitreous carbon eletrodes

Detalhes bibliográficos
Autor(a) principal: Tramontina, Jucelânia
Data de Publicação: 2001
Outros Autores: Machado, Giovanna, Azambuja, Denise Schermann, Piatnicki, Clarisse Maria Sartori, Samios, Dimitrios
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/19410
Resumo: The development of simple methods for removal of heavy metals from aqueous samples is a relevant field of research. In this connection, the electrodeposition of the Cd+2 ion, one of the most toxic species for animals and human beings, was investigated in aerated pH 4.8 sulfuric-sulfate solutions. In potentiostatic conditions, the maximum rate of cadmium deposition at a neutral polypyrrole (PPy0) coated reticulated vitreous carbon (RVC) working electrode occurs at -3.0 Vvs. the saturated calomel reference electrode (SCE).Moreover, the conversion rate depends both on the applied potential and on themass transport regime, and, for solutions containing 10mg L-1 of Cd2+, the highest removal efficiency achieved is 84%after 90 min of electrolysis. The concentration decay of the Cd+2 ion in the solution was monitored by anodic stripping voltammetry (ASV) at a hanging mercury drop electrode. Besides, metallic cadmium deposited onto the polypyrrole modified RVC electrode was evidenced by Scanning ElectronMicroscopy (SEM) analysis using the backscattered electron image (BEI) technique and by Energy Dispersive Spectrometry (EDS).
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spelling Tramontina, JucelâniaMachado, GiovannaAzambuja, Denise SchermannPiatnicki, Clarisse Maria SartoriSamios, Dimitrios2010-04-16T09:09:55Z20011516-1439http://hdl.handle.net/10183/19410000300810The development of simple methods for removal of heavy metals from aqueous samples is a relevant field of research. In this connection, the electrodeposition of the Cd+2 ion, one of the most toxic species for animals and human beings, was investigated in aerated pH 4.8 sulfuric-sulfate solutions. In potentiostatic conditions, the maximum rate of cadmium deposition at a neutral polypyrrole (PPy0) coated reticulated vitreous carbon (RVC) working electrode occurs at -3.0 Vvs. the saturated calomel reference electrode (SCE).Moreover, the conversion rate depends both on the applied potential and on themass transport regime, and, for solutions containing 10mg L-1 of Cd2+, the highest removal efficiency achieved is 84%after 90 min of electrolysis. The concentration decay of the Cd+2 ion in the solution was monitored by anodic stripping voltammetry (ASV) at a hanging mercury drop electrode. Besides, metallic cadmium deposited onto the polypyrrole modified RVC electrode was evidenced by Scanning ElectronMicroscopy (SEM) analysis using the backscattered electron image (BEI) technique and by Energy Dispersive Spectrometry (EDS).application/pdfengMaterials research : ibero-american journal of materials. São Carlos, SP. Vol. 4, n. 3 (2001), p. 195-200Metais : RemoçãoCádmioDeposição eletroquímicaPolipirrolCarbono vítreo reticuladoCadmiumRVCPolypyrroleMicroscopyRemoval of Cd+2 from aqueous solutions onto polypyrrole coated reticulated vitreous carbon eletrodesinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000300810.pdf000300810.pdfTexto completo (inglês)application/pdf745801http://www.lume.ufrgs.br/bitstream/10183/19410/1/000300810.pdfabe9ce5b1c19e47a37fb774decc4e412MD51TEXT000300810.pdf.txt000300810.pdf.txtExtracted Texttext/plain20155http://www.lume.ufrgs.br/bitstream/10183/19410/2/000300810.pdf.txt5040998996e761d06dc206a68f79f18cMD52THUMBNAIL000300810.pdf.jpg000300810.pdf.jpgGenerated Thumbnailimage/jpeg1915http://www.lume.ufrgs.br/bitstream/10183/19410/3/000300810.pdf.jpgb399189b9ce9cd2d38e39031b68816ddMD5310183/194102021-06-26 04:48:12.71124oai:www.lume.ufrgs.br:10183/19410Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-06-26T07:48:12Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Removal of Cd+2 from aqueous solutions onto polypyrrole coated reticulated vitreous carbon eletrodes
title Removal of Cd+2 from aqueous solutions onto polypyrrole coated reticulated vitreous carbon eletrodes
spellingShingle Removal of Cd+2 from aqueous solutions onto polypyrrole coated reticulated vitreous carbon eletrodes
Tramontina, Jucelânia
Metais : Remoção
Cádmio
Deposição eletroquímica
Polipirrol
Carbono vítreo reticulado
Cadmium
RVC
Polypyrrole
Microscopy
title_short Removal of Cd+2 from aqueous solutions onto polypyrrole coated reticulated vitreous carbon eletrodes
title_full Removal of Cd+2 from aqueous solutions onto polypyrrole coated reticulated vitreous carbon eletrodes
title_fullStr Removal of Cd+2 from aqueous solutions onto polypyrrole coated reticulated vitreous carbon eletrodes
title_full_unstemmed Removal of Cd+2 from aqueous solutions onto polypyrrole coated reticulated vitreous carbon eletrodes
title_sort Removal of Cd+2 from aqueous solutions onto polypyrrole coated reticulated vitreous carbon eletrodes
author Tramontina, Jucelânia
author_facet Tramontina, Jucelânia
Machado, Giovanna
Azambuja, Denise Schermann
Piatnicki, Clarisse Maria Sartori
Samios, Dimitrios
author_role author
author2 Machado, Giovanna
Azambuja, Denise Schermann
Piatnicki, Clarisse Maria Sartori
Samios, Dimitrios
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Tramontina, Jucelânia
Machado, Giovanna
Azambuja, Denise Schermann
Piatnicki, Clarisse Maria Sartori
Samios, Dimitrios
dc.subject.por.fl_str_mv Metais : Remoção
Cádmio
Deposição eletroquímica
Polipirrol
Carbono vítreo reticulado
topic Metais : Remoção
Cádmio
Deposição eletroquímica
Polipirrol
Carbono vítreo reticulado
Cadmium
RVC
Polypyrrole
Microscopy
dc.subject.eng.fl_str_mv Cadmium
RVC
Polypyrrole
Microscopy
description The development of simple methods for removal of heavy metals from aqueous samples is a relevant field of research. In this connection, the electrodeposition of the Cd+2 ion, one of the most toxic species for animals and human beings, was investigated in aerated pH 4.8 sulfuric-sulfate solutions. In potentiostatic conditions, the maximum rate of cadmium deposition at a neutral polypyrrole (PPy0) coated reticulated vitreous carbon (RVC) working electrode occurs at -3.0 Vvs. the saturated calomel reference electrode (SCE).Moreover, the conversion rate depends both on the applied potential and on themass transport regime, and, for solutions containing 10mg L-1 of Cd2+, the highest removal efficiency achieved is 84%after 90 min of electrolysis. The concentration decay of the Cd+2 ion in the solution was monitored by anodic stripping voltammetry (ASV) at a hanging mercury drop electrode. Besides, metallic cadmium deposited onto the polypyrrole modified RVC electrode was evidenced by Scanning ElectronMicroscopy (SEM) analysis using the backscattered electron image (BEI) technique and by Energy Dispersive Spectrometry (EDS).
publishDate 2001
dc.date.issued.fl_str_mv 2001
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dc.relation.ispartof.pt_BR.fl_str_mv Materials research : ibero-american journal of materials. São Carlos, SP. Vol. 4, n. 3 (2001), p. 195-200
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