Removal of Cd+2 from aqueous solutions onto polypyrrole coated reticulated vitreous carbon eletrodes
Autor(a) principal: | |
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Data de Publicação: | 2001 |
Outros Autores: | , , , |
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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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 |
dc.date.accessioned.fl_str_mv |
2010-04-16T09:09:55Z |
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info:eu-repo/semantics/article info:eu-repo/semantics/other |
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http://hdl.handle.net/10183/19410 |
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1516-1439 |
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000300810 |
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http://hdl.handle.net/10183/19410 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
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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info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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