Comparative degradation of indigo carmine by electrochemical oxidation and advanced oxidation processes
ABSTRACT: The remediation of aqueous effluents containing indigo carmine (IC), a highly toxic indigoid dye used as a textile coloring agent and an additive in pharmaceutical tablets and capsules, was studied using four promising technologies: Ultrasound (US), photo-Fenton (PF), TiO2 photocatalysis (...
- Autores:
-
Silva Agredo, Javier
González, Ignacio
Torres Palma, Ricardo Antonio
- Tipo de recurso:
- Article of investigation
- Fecha de publicación:
- 2014
- Institución:
- Universidad de Antioquia
- Repositorio:
- Repositorio UdeA
- Idioma:
- eng
- OAI Identifier:
- oai:bibliotecadigital.udea.edu.co:10495/13349
- Acceso en línea:
- http://hdl.handle.net/10495/13349
- Palabra clave:
- Dyes
Electrochemical oxidation
Indigo Carmine
Photo-Fenton
Water treatment
Índigo carmín
Tintes
Tratamiento de aguas
- Rights
- openAccess
- License
- https://creativecommons.org/licenses/by-nc-nd/4.0/
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Comparative degradation of indigo carmine by electrochemical oxidation and advanced oxidation processes |
| title |
Comparative degradation of indigo carmine by electrochemical oxidation and advanced oxidation processes |
| spellingShingle |
Comparative degradation of indigo carmine by electrochemical oxidation and advanced oxidation processes Dyes Electrochemical oxidation Indigo Carmine Photo-Fenton Water treatment Índigo carmín Tintes Tratamiento de aguas |
| title_short |
Comparative degradation of indigo carmine by electrochemical oxidation and advanced oxidation processes |
| title_full |
Comparative degradation of indigo carmine by electrochemical oxidation and advanced oxidation processes |
| title_fullStr |
Comparative degradation of indigo carmine by electrochemical oxidation and advanced oxidation processes |
| title_full_unstemmed |
Comparative degradation of indigo carmine by electrochemical oxidation and advanced oxidation processes |
| title_sort |
Comparative degradation of indigo carmine by electrochemical oxidation and advanced oxidation processes |
| dc.creator.fl_str_mv |
Silva Agredo, Javier González, Ignacio Torres Palma, Ricardo Antonio |
| dc.contributor.author.none.fl_str_mv |
Silva Agredo, Javier González, Ignacio Torres Palma, Ricardo Antonio |
| dc.contributor.researchgroup.spa.fl_str_mv |
Grupo de Investigación en Remediación Ambiental y Biocatálisis |
| dc.subject.none.fl_str_mv |
Dyes Electrochemical oxidation Indigo Carmine Photo-Fenton Water treatment Índigo carmín Tintes Tratamiento de aguas |
| topic |
Dyes Electrochemical oxidation Indigo Carmine Photo-Fenton Water treatment Índigo carmín Tintes Tratamiento de aguas |
| description |
ABSTRACT: The remediation of aqueous effluents containing indigo carmine (IC), a highly toxic indigoid dye used as a textile coloring agent and an additive in pharmaceutical tablets and capsules, was studied using four promising technologies: Ultrasound (US), photo-Fenton (PF), TiO2 photocatalysis (TiO2/UV) and electrochemical oxidation with Ti/IrO2-SnO2-Sb2O5 as anode (EO). The main degradation pathway was determined for each system tested. Additionally, the comparative effects of initial pH and presence of chloride ions was investigated. The results showed that EO of IC was mediated by chloride, whereas IC degradation by TiO2/UV occurred directly in valence band holes of the catalyst. However, with PF and US systems hydroxyl radicals OH played the main role. In spite of the different degradation pathways, acidic pH increased the performance of all systems. The presence of chloride favored the efficiency of EO, but inhibited the IC removal by PF, as well as the elimination of Chemical Oxygen Demand (COD) by US and TiO2/UV. The results showed that, under working conditions, EO with Ti/IrO2-SnO2-Sb2O5 anodes is the best option to treat IC in effluents containing a significant concentration of chloride ions |
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2014 |
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2014 |
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2020-01-18T02:12:14Z |
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2020-01-18T02:12:14Z |
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Artículo de investigación |
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info:eu-repo/semantics/article |
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Palma Goyes, R. E., Silva Agredo, J., González, I., & Torres Palma, R. A. (2014). Comparative degradation of indigo carmine by electrochemical oxidation and advanced oxidation processes. Electrochimica Acta, 140, 427-433. https://doi.org/10.1016/j.electacta.2014.06.096 |
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0013-4686 |
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http://hdl.handle.net/10495/13349 |
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10.1016/j.electacta.2014.06.096 |
| identifier_str_mv |
Palma Goyes, R. E., Silva Agredo, J., González, I., & Torres Palma, R. A. (2014). Comparative degradation of indigo carmine by electrochemical oxidation and advanced oxidation processes. Electrochimica Acta, 140, 427-433. https://doi.org/10.1016/j.electacta.2014.06.096 0013-4686 10.1016/j.electacta.2014.06.096 |
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http://hdl.handle.net/10495/13349 |
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eng |
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eng |
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433 |
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427 |
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140 |
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Electrochimica Acta |
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https://creativecommons.org/licenses/by-nc-nd/4.0/ |
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http://creativecommons.org/licenses/by-nc-nd/2.5/co/ |
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Silva Agredo, JavierGonzález, IgnacioTorres Palma, Ricardo AntonioGrupo de Investigación en Remediación Ambiental y Biocatálisis2020-01-18T02:12:14Z2020-01-18T02:12:14Z2014Palma Goyes, R. E., Silva Agredo, J., González, I., & Torres Palma, R. A. (2014). Comparative degradation of indigo carmine by electrochemical oxidation and advanced oxidation processes. Electrochimica Acta, 140, 427-433. https://doi.org/10.1016/j.electacta.2014.06.0960013-4686http://hdl.handle.net/10495/1334910.1016/j.electacta.2014.06.096ABSTRACT: The remediation of aqueous effluents containing indigo carmine (IC), a highly toxic indigoid dye used as a textile coloring agent and an additive in pharmaceutical tablets and capsules, was studied using four promising technologies: Ultrasound (US), photo-Fenton (PF), TiO2 photocatalysis (TiO2/UV) and electrochemical oxidation with Ti/IrO2-SnO2-Sb2O5 as anode (EO). The main degradation pathway was determined for each system tested. Additionally, the comparative effects of initial pH and presence of chloride ions was investigated. The results showed that EO of IC was mediated by chloride, whereas IC degradation by TiO2/UV occurred directly in valence band holes of the catalyst. However, with PF and US systems hydroxyl radicals OH played the main role. In spite of the different degradation pathways, acidic pH increased the performance of all systems. The presence of chloride favored the efficiency of EO, but inhibited the IC removal by PF, as well as the elimination of Chemical Oxygen Demand (COD) by US and TiO2/UV. The results showed that, under working conditions, EO with Ti/IrO2-SnO2-Sb2O5 anodes is the best option to treat IC in effluents containing a significant concentration of chloride ions6application/pdfengElsevierHolandahttps://creativecommons.org/licenses/by-nc-nd/4.0/http://creativecommons.org/licenses/by-nc-nd/2.5/co/Atribución-NoComercial-SinDerivadas 2.5 Colombiainfo:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2DyesElectrochemical oxidationIndigo CarminePhoto-FentonWater treatmentÍndigo carmínTintesTratamiento de aguasComparative degradation of indigo carmine by electrochemical oxidation and advanced oxidation processesArtículo de investigaciónhttp://purl.org/coar/resource_type/c_2df8fbb1https://purl.org/redcol/resource_type/ARThttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion433427140Electrochimica ActaPublicationCC-LICENSElicense_urllicense_urltext/plain; charset=utf-849https://bibliotecadigital.udea.edu.co/bitstreams/4787c196-caa8-4542-9a22-a76a02df2b07/download4afdbb8c545fd630ea7db775da747b2fMD54falseAnonymousREADlicense_textlicense_texttext/html; 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