Fe-TAML/hydrogen peroxide degradation of concentrated solutions of the commercial azo dye tartrazine

2011 ◽  
Vol 1 (3) ◽  
pp. 437 ◽  
Author(s):  
Evan S. Beach ◽  
Ryan T. Malecky ◽  
Roberto R. Gil ◽  
Colin P. Horwitz ◽  
Terrence J. Collins
Keyword(s):  
Hydrogen Peroxide ◽  
Azo Dye ◽  
Concentrated Solutions

Effective Removal of Azo Dye Reactive Blue 222 from Aqueous Solutions Using Modified Magnetic Nanoparticles with Sodium Alginate/Hydrogen Peroxide

2018 ◽  
Vol 38 (s1) ◽  
pp. S205-S213 ◽  
Author(s):  
Reza Shokoohi ◽  
Zahra Torkshavand ◽  
Mohammad Molla Mahmoudi ◽  
Abbas Moradi Behgoo ◽  
Effat Ghaedrahmati ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Magnetic Nanoparticles ◽  
Aqueous Solutions ◽  
Sodium Alginate ◽  
Azo Dye ◽  
Effective Removal ◽  
Modified Magnetic Nanoparticles

Synthesis and Characterization of Co/Al-PILCs for the Oxidation of an Azo Dye Using the Bicarbonate-Activated Hydrogen Peroxide System

2021 ◽  
Author(s):  
Iván F. Macías-Quiroga ◽  
Alejandro Pérez-Flórez ◽  
Juan S. Arcila ◽  
Gloria I. Giraldo-Goméz ◽  
Nancy R. Sanabria-Gonzalez
Keyword(s):  
Hydrogen Peroxide ◽  
Azo Dye ◽  
Synthesis And Characterization

A Trickle Bed Electrochemical Reactor for Generation of Hydrogen Peroxide and Degradation of an Azo Dye in Water

2015 ◽  
Vol 18 (1) ◽  
Author(s):  
Yangming Lei ◽  
Hong Liu ◽  
Chengchun Jiang ◽  
Zhemin Shen ◽  
Wenhua Wang
Keyword(s):  
Hydrogen Peroxide ◽  
Carbon Black ◽  
Azo Dye ◽  
Electrochemical Reactor ◽  
Fenton Process ◽  
Trickle Bed Reactor ◽  
Trickle Bed

AbstractA trickle bed electrochemical reactor was used to generate hydrogen peroxide in dilute electrolyte and then degrade an azo dye, i.e. reactive brilliant red X-3B in water by electro-Fenton process. The trickle bed reactor was composed of carbon black-polytetrafluoroethylene coated graphite chips. During the preparation of coated graphite chips, coating times and surfactant dosage were optimized to improve electro-generation of H

Azo dye functionalized graphene nanoplatelets for selective detection of bisphenol A and hydrogen peroxide

RSC Advances ◽  
2015 ◽  
Vol 5 (106) ◽  
pp. 87295-87305 ◽  
Author(s):  
Nael G. Yasri ◽  
Ashok K. Sundramoorthy ◽  
Sundaram Gunasekaran
Keyword(s):  
Hydrogen Peroxide ◽  
Bisphenol A ◽  
Azo Dye ◽  
Saline Solution ◽  
Graphene Nanoplatelets ◽  
Direct Blue ◽  
Highly Sensitive ◽  
Highly Sensitive Detection ◽  
Phosphate Buffered Saline ◽  
Direct Blue 71

A new electrochemical sensor is developed based on graphene nanoplatelets functionalized with tri-azo dye (direct blue 71) for selective and highly sensitive detection of bisphenol A and hydrogen peroxide in pH 7 phosphate buffered saline solution.

scholarly journals Advanced oxidation processes for decolorization of aqueous solution containing acid red G azo dye

2004 ◽  
Vol 2 (4) ◽  
pp. 573-588 ◽  
Author(s):  
Mioara Surpăţeanu ◽  
Carmen Zaharia
Keyword(s):  
Hydrogen Peroxide ◽  
Azo Dye ◽  
Catalytic Effect ◽  
Dye Decolorization ◽  
Alkaline Media ◽  
Ferrous Ions ◽  
Oxidant Concentration ◽  
Wide Range ◽  
Neutral Media ◽  
Acid Red G

AbstractSome investigations concerning the decolorization of Acid Red G azo dye by photooxidation with hydrogen peroxide were performed. The influences of pH, oxidant concentration, and the presence of Fe2+ or other metal ions (Co2+, Cu2+, Ni2+, Mn2+) as potential catalysts, were investigated. The best results were obtained in the presence of ferrous ions in acid and neutral media. The other ions are not as effective as Fe2+ for dye decolorization. Co2+ and Cu2+ ions have a catalytic action, at low concentration, within a wide range of pH. Ni2+ and Mn2+ ions have no catalytic effect in photooxidation with hydrogen peroxide at acid Ni2+ and Mn2+ ions have no catalytic effect in photooxidation with hydrogen peroxide at acid pH values, but show a weak action in alkaline media.

scholarly journals DEGRADAÇÃO DO CORANTE AZUL REATIVO 5G PELO PROCESSO OXIDATIVO AVANÇADO UV/H2O2

e-xacta ◽  
2016 ◽  
Vol 9 (2) ◽  
Author(s):  
Denis Rafael de Souza Lima ◽  
Isabela Luiza Alves de Almeida ◽  
Vanderlei Inácio de Paula
Keyword(s):  
Hydrogen Peroxide ◽  
Ultraviolet Radiation ◽  
Chemical Oxygen Demand ◽  
Lactuca Sativa ◽  
Azo Dye ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Oxygen Demand ◽  
Liquid Wastes ◽  
Optimized Conditions

<p>Neste trabalho avaliou-se a aplicação do processo oxidativo avançado (POA) de foto-peroxidação (UV/H<sub>2</sub>O<sub>2</sub>) na degradação do azocorante têxtil comercial Azul Reativo 5G. Foram preparadas soluções sintéticas contendo o corante e tratadas através do respectivo POA, sendo a eficiência do tratamento avaliada através dos seguintes parâmetros: descoloração, redução da demanda química de oxigênio (DQO) e ecotoxicidade com sementes de Lactuca sativa. Após 30 minutos de tratamento em condições otimizadas na presença de peróxido de hidrogênio e radiação ultravioleta, foi observada descoloração na ordem de 91,8% sem redução significativa da DQO (1,8%), além de diminuição da ecotoxicidade da solução, indicando a viabilidade da aplicação do processo UV/H<sub>2</sub>O<sub>2</sub> para tratamento de resíduos líquidos contendo este azocorante.</p><p>ABSTRACT</p><p>In the present paper was evaluated the application of advanced oxidation process (AOP) photo-peroxidation (UV/H<sub>2</sub>O<sub>2</sub>) applied to degradation of the commercial textile azo dye Reactive Blue 5G. Synthetic solutions were prepared containing the dye, treated through the respective AOP and the efficiency of the treatment evaluated by the following parameters: discoloration, reduction of chemical oxygen demand (COD) and ecotoxicity with Lactuca sativa seeds. After 30 minutes of treatment in optimized conditions in the presence of hydrogen peroxide and ultraviolet radiation, discoloration was observed in order of 91.8% without significant reduction of COD (1.8%), but decrease in the ecotoxicity of the solution, indicating feasibility of the process UV/H<sub>2</sub>O<sub>2</sub> for treating liquid wastes containing this azo dye.</p>

scholarly journals Photocatalytic Degradation of Azo Dye Reactive Violet 5 on Fe-Doped Titania Catalysts under Visible Light Irradiation

Catalysts ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 645 ◽  
Author(s):  
Antonio Zuorro ◽  
Roberto Lavecchia ◽  
Marika Michela Monaco ◽  
Giuseppina Iervolino ◽  
Vincenzo Vaiano
Keyword(s):  
Hydrogen Peroxide ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Textile Industry ◽  
Azo Dye ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Textile Effluents ◽  
Effects Of Ph ◽  
Doped Titania

The presence of azo dyes in textile effluents is an issue of major concern due to their potential impact on the environment and human health. In this study we investigate the photocatalytic degradation under visible light of Reactive Violet 5 (RV5), an azo dye widely used in the textile industry. A preliminary screening of different titania-based catalysts was carried out to identify the best candidate for RV5 removal. The selected catalyst was then tested in a stirred and aerated lab-scale reactor illuminated with a blue light-emitting diode (LED) source emitting in the wavelength range of 460–470 nm. The effects of pH, catalyst load, and hydrogen peroxide additions on the efficiency of dye removal were evaluated. Under the best conditions (pH 10, 3 g/L of catalyst, and 60 mM hydrogen peroxide), the dye solution was completely decolorized in about 2 h. Overall, the results obtained suggest that the proposed process may represent a suitable method for the removal of RV5 from textile effluents.

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