Determination of optimum operating parameters for Acid Yellow 36 decolorization by electro-Fenton process using BDD cathode

Cruz-González, Karla; Torres-Lopez, Omar; García-León, Azucena Minerva; Guzmán-Mar, Jorge Luis; Hinojosa‐Reyes, Laura; Hernández-Ramírez, Aracely; Peralta‐Hernández, Juan M.

doi:10.1016/j.cej.2010.03.043

Cited by 186 publications

(49 citation statements)

References 33 publications

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“…Similar to other studies [33], the results obtained in this work showed that there is a mass transport limitation during cathodic H 2 O 2 production, which decreases its concentration. However, as it has been reported even with the lowest H 2 O 2 concentration (45 mg L −1 , Q v = 5.6 L min −1 ) achieved, it is possible to get an adequate Fenton reaction performance [31].…”

Section: Comparison Between the Electrochemical Degradation Of Tcmtb supporting

confidence: 80%

A Comparative Analysis of 2-(Thiocyanomethylthio)-Benzothiazole Degradation Using Electro-Fenton and Anodic Oxidation on a Boron-Doped Diamond Electrode

Vázquez

Alvarado

Lázaro

et al. 2018

International Journal of Photoenergy

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2-(Thiocyanomethylthio)-benzothiazole (TCMTB) is used as fungicide in the paper, tannery, paint, and coatings industries, and its study is important as it is considered toxic to aquatic life. In this study, a comparison of direct anodic oxidation (AO) using a borondoped diamond electrode (BDD) and electro-Fenton (EF) processes for TCMTB degradation in acidic chloride and sulfate media using a FM01-LC reactor was performed. The results of the electrolysis processes studied in the FM01-LC reactor showed a higher degradation of TCMTB with the anodic oxidation process than with the electro-Fenton process, reaching 81% degradation for the former process versus 47% degradation for the latter process. This difference was attributed to the decrease in H 2 O 2 during the EF process, due to parallel oxidation of chlorides. The degradation rate and current efficiency increased as a function of volumetric flow rate, indicating that convection promotes anodic oxidation and electro-Fenton processes. The results showed that both AO and EF processes could be useful strategies for TCMTB toxicity reduction in wastewaters.

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Section: Comparison Between the Electrochemical Degradation Of Tcmtb supporting

confidence: 80%

A Comparative Analysis of 2-(Thiocyanomethylthio)-Benzothiazole Degradation Using Electro-Fenton and Anodic Oxidation on a Boron-Doped Diamond Electrode

Vázquez

Alvarado

Lázaro

et al. 2018

International Journal of Photoenergy

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“…The coefficients in front of the coded model terms indicate the intensity and direction (positive or negative) of the influence of that process independent variable on the response. A positive effect of a factor means that the response is improved when the factor level increases and a negative effect of the factor reveal that the response is inhibited when the factor level increases (Cruz-González et al, 2010). For instance, it is evident that from Eqs.…”

Section: Establishment Of Empirical Regression Models and Anova Resultsmentioning

confidence: 92%

Evaluation of the optimal operation conditions using response surface methodology for the treatment of DMP by electrocoagulation

2015

Global NEST Journal

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Phthalic acid esters, commonly called as phthalates, are of a common use in the industrial activities and are known with their hazardous impact on the environment and on humans such as endocrine disrupting agents, carcinogenic and toxic effects. These adverse effects have led to increasing interest and research on the treatment and control of phthalates. Over the past two decades, there has been growing interest in the use of electrochemical techniques such as electrocoagulation (EC) for the treatment of organic pollutants particularly toxic organics. During the course of EC, where iron or stainless steel electrodes are used as electrodes, different mechanisms are operative for the elimination of organic matter, namely (a) adsorption (b) direct anodic oxidation, and (c) indirect oxidation of pollutants in the bulk solution. A statistical-based technique named as response surface methodology (RSM) is a powerful tool for modeling the complex systems (such as EC), evaluating the simultaneous effects of several factors (independent variables), and thus searching optimum conditions for desirable responses (dependent variables). Until now, RSM has not been used as a modeling and optimization tool for the EC treatment of phthalates. In this study, EC treatment, using stainless steel anode, of dimethyl phthalate (DMP), was investigated and optimized via RSM, central composite design (CCD). Initial DMP concentration (DMPo; 20-100 mg L ) values were selected as the responses. The EC process was optimized to improve the abatements of DMP and TOC and to reduce the EEC values. Separate validation experiments were conducted for each initial DMP concentrations at optimum EC conditions established by the software module to check the goodness of fit and quality of the regression models. According to the established second-order polynomial regression models, DMP, TOC removal efficiencies and EEC values were affected by the process variables in the following decreasing order; Jc>tr>DMPo>NaCl (negative impact), tr>DMPo (negative impact)>JcNaCl (negative impact) and tr>JcNaCl (negative impact)>DMPo (negative impact), respectively. Analysis of variance indicated that the experimental design models obtained for the EC treatment of aqueous DMP solutions in terms of the model pollutant and mineralization were statistically significant. The response surfaces of DMP established between initial DMP concentration and current density showed that DMP removal efficiencies can be enhanced by increasing the current density to a certain value indicating that an optimum value of current density exists for maximum DMP removal.

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“…These include, carbon felt [39,40], graphite [41][42][43], reticulated vitreous carbon [44,45], boron-doped-diamond (BDD) [43,46], and even carbon nanotubes coated cathodes [47,48]. The capacity of H 2 O 2 production of these different cathodes depends strongly on the different operating conditions used in different works.…”

Section: Tetrahedral Coordinations Carbon Nanostructures With Varioumentioning

confidence: 99%

Correlation of sp2 carbon bonds content in magnetron-sputtered amorphous carbon films to their electrochemical H2O2 production for water decontamination applications

Pandiyan

Delegan

Dirany

et al. 2015

Carbon

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Determination of optimum operating parameters for Acid Yellow 36 decolorization by electro-Fenton process using BDD cathode

Cited by 186 publications

References 33 publications

A Comparative Analysis of 2-(Thiocyanomethylthio)-Benzothiazole Degradation Using Electro-Fenton and Anodic Oxidation on a Boron-Doped Diamond Electrode

A Comparative Analysis of 2-(Thiocyanomethylthio)-Benzothiazole Degradation Using Electro-Fenton and Anodic Oxidation on a Boron-Doped Diamond Electrode

Evaluation of the optimal operation conditions using response surface methodology for the treatment of DMP by electrocoagulation

Correlation of sp2 carbon bonds content in magnetron-sputtered amorphous carbon films to their electrochemical H2O2 production for water decontamination applications

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