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Electro-Oxidation–Plasma Treatment for Azo Dye Carmoisine (Acid Red 14) in an Aqueous Solution

Currently, azo dye Carmoisine is an additive that is widely used in the food processing industry sector. However, limited biodegradability in the environment has become a major concern regarding the removal of azo dye. In this study, the degradation of azo dye Carmoisine (acid red 14) in an aqueous...

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Autores principales: Barrera, Héctor, Cruz-Olivares, Julián, Frontana-Uribe, Bernardo A., Gómez-Díaz, Aarón, Reyes-Romero, Pedro G., Barrera-Diaz, Carlos E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7143150/
https://www.ncbi.nlm.nih.gov/pubmed/32210192
http://dx.doi.org/10.3390/ma13061463
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author Barrera, Héctor
Cruz-Olivares, Julián
Frontana-Uribe, Bernardo A.
Gómez-Díaz, Aarón
Reyes-Romero, Pedro G.
Barrera-Diaz, Carlos E.
author_facet Barrera, Héctor
Cruz-Olivares, Julián
Frontana-Uribe, Bernardo A.
Gómez-Díaz, Aarón
Reyes-Romero, Pedro G.
Barrera-Diaz, Carlos E.
author_sort Barrera, Héctor
collection PubMed
description Currently, azo dye Carmoisine is an additive that is widely used in the food processing industry sector. However, limited biodegradability in the environment has become a major concern regarding the removal of azo dye. In this study, the degradation of azo dye Carmoisine (acid red 14) in an aqueous solution was studied by using a sequenced process of electro-oxidation–plasma at atmospheric pressure (EO–PAP). Both the efficiency and effectiveness of the process were compared individually. To ascertain the behavior of azo dye Carmoisine over the degradation process, the variations in its physical characteristics were analyzed with a voltage–current relationship, optical emission spectra (OES) and temperature. On the other hand, chemical variables were analyzed by finding out pH, electrical conductivity, absorbance (UV/VIS Spectrophotometry), chemical oxygen demand (COD), cyclic voltammetry (CV), energy consumption and cost. The sequenced process (EO–PAP) increased degradation efficiency, reaching 100% for azo dye Carmoisine (acid red 14) in 60 min. It was observed that the introduction of small quantities of iron metal ions (Fe(2+)/Fe(3+)) as catalysts into the plasma process and the hydrogen peroxide formed in plasma electrical discharge led to the formation of larger amounts of hydroxyl radicals, thus promoting a better performance in the degradation of azo dye. This sequenced process increased the decolorization process.
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spelling pubmed-71431502020-04-14 Electro-Oxidation–Plasma Treatment for Azo Dye Carmoisine (Acid Red 14) in an Aqueous Solution Barrera, Héctor Cruz-Olivares, Julián Frontana-Uribe, Bernardo A. Gómez-Díaz, Aarón Reyes-Romero, Pedro G. Barrera-Diaz, Carlos E. Materials (Basel) Article Currently, azo dye Carmoisine is an additive that is widely used in the food processing industry sector. However, limited biodegradability in the environment has become a major concern regarding the removal of azo dye. In this study, the degradation of azo dye Carmoisine (acid red 14) in an aqueous solution was studied by using a sequenced process of electro-oxidation–plasma at atmospheric pressure (EO–PAP). Both the efficiency and effectiveness of the process were compared individually. To ascertain the behavior of azo dye Carmoisine over the degradation process, the variations in its physical characteristics were analyzed with a voltage–current relationship, optical emission spectra (OES) and temperature. On the other hand, chemical variables were analyzed by finding out pH, electrical conductivity, absorbance (UV/VIS Spectrophotometry), chemical oxygen demand (COD), cyclic voltammetry (CV), energy consumption and cost. The sequenced process (EO–PAP) increased degradation efficiency, reaching 100% for azo dye Carmoisine (acid red 14) in 60 min. It was observed that the introduction of small quantities of iron metal ions (Fe(2+)/Fe(3+)) as catalysts into the plasma process and the hydrogen peroxide formed in plasma electrical discharge led to the formation of larger amounts of hydroxyl radicals, thus promoting a better performance in the degradation of azo dye. This sequenced process increased the decolorization process. MDPI 2020-03-23 /pmc/articles/PMC7143150/ /pubmed/32210192 http://dx.doi.org/10.3390/ma13061463 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Barrera, Héctor
Cruz-Olivares, Julián
Frontana-Uribe, Bernardo A.
Gómez-Díaz, Aarón
Reyes-Romero, Pedro G.
Barrera-Diaz, Carlos E.
Electro-Oxidation–Plasma Treatment for Azo Dye Carmoisine (Acid Red 14) in an Aqueous Solution
title Electro-Oxidation–Plasma Treatment for Azo Dye Carmoisine (Acid Red 14) in an Aqueous Solution
title_full Electro-Oxidation–Plasma Treatment for Azo Dye Carmoisine (Acid Red 14) in an Aqueous Solution
title_fullStr Electro-Oxidation–Plasma Treatment for Azo Dye Carmoisine (Acid Red 14) in an Aqueous Solution
title_full_unstemmed Electro-Oxidation–Plasma Treatment for Azo Dye Carmoisine (Acid Red 14) in an Aqueous Solution
title_short Electro-Oxidation–Plasma Treatment for Azo Dye Carmoisine (Acid Red 14) in an Aqueous Solution
title_sort electro-oxidation–plasma treatment for azo dye carmoisine (acid red 14) in an aqueous solution
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7143150/
https://www.ncbi.nlm.nih.gov/pubmed/32210192
http://dx.doi.org/10.3390/ma13061463
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