Electrochemical oxidation of direct blue 86 dye using MMO coated Ti anode: modelling, kinetics and degradation pathway

Kumar, Diwakar; Gupta, Sunil Kumar

doi:10.1016/j.cep.2022.109127

Cited by 23 publications

(3 citation statements)

References 106 publications

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“…Their research elucidated the ideal parameters for maximizing dye and COD removal, leading to complete dye mineralization. Moreover, the study delved into degradation pathways, modeling techniques, and projected treatment expenses, underscoring the method's efficacy in treating textile wastewater [ 49 ].…”

Section: Resultsmentioning

confidence: 99%

Modelling and optimization of fenton process for decolorization of azo dye (DR16) at microreactor using artificial neural network and genetic algorithm

Sadeghzadeh Ahari,

Sadeghi,

Koolivand Salooki

et al. 2024

Heliyon

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Section: Resultsmentioning

confidence: 99%

Modelling and optimization of fenton process for decolorization of azo dye (DR16) at microreactor using artificial neural network and genetic algorithm

Sadeghzadeh Ahari,

Sadeghi,

Koolivand Salooki

et al. 2024

Heliyon

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“…These electrodes offer the advantage of being more stable and durable than their single-component metal oxide equivalents [ 1 , 2 ]. The versatility of MMO electrodes, characterized by their adjustable physicochemical properties acquired through varying synthesis methods and morphologies, has contributed to their applications in various industries, including oxygen production, chlor-alkali generation [ 3 ], cathodic protection [ 4 ], and organic compound degradation [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Improved Operation of Chloralkaline Reversible Cells with Mixed Metal Oxide Electrodes Made Using Microwaves

Ribeiro,

Santos,

Dória

et al. 2024

Nanomaterials

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This study focuses on the synthesis of mixed metal oxide anodes (MMOs) with the composition Ti/RuO2Sb2O4Ptx (where x = 0, 5, 10 mol) using hybrid microwave irradiation heating. The synthesized electrodes were characterized using scanning electron microscopy, X-ray energy-dispersive analysis, X-ray diffraction, cyclic voltammetry, and electrochemical impedance spectroscopy. These electrodes were then evaluated in both bulk electrolytic and fuel cell tests within a reversible chloralkaline electrochemical cell. The configurations using the electrodes Ti/(RuO2)0.7-(Sb2O4)0.3 and Ti/(RuO2)66.5-(Sb2O4)28.5-Pt5 presented lower onset potential for oxygen and chlorine evolution reactions and reduced resistance to charge transfer compared to the Ti/(RuO2)63-(Sb2O4)27-Pt10 variant. These electrodes demonstrated notable performance in reversible electrochemical cells, achieving Coulombic efficiencies of up to 60% when operating in the electrolytic mode at current densities of 150 mA cm−2. They also reached maximum power densities of 1.2 mW cm−2 in the fuel cell. In both scenarios, the presence of platinum in the MMO coating positively influenced the process. Furthermore, a significant challenge encountered was crossover through the membranes, primarily associated with gaseous Cl2. This study advances our understanding of reversible electrochemical cells and presents possibilities for further exploration and refinement. It demonstrated that the synergy of innovative electrode synthesis strategies and electrochemical engineering can lead to promising and sustainable technologies for energy conversion.

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“…Several techniques are available for the removal of dyes from wastewater, for instance, adsorption (Danish et al, 2018;Jesudoss et al, 2020;Temesgen et al, 2018), membrane process (Ajibade et al, 2022;Xie et al, 2022), coagulation-flocculation (Feng et al, 2021;Mcyotto et al, 2021;Sadri Moghaddam et al, 2010;Verma et al, 2012), electrochemical separation (Hamous et al, 2021;Kumar and Gupta, 2022;Sathishkumar et al, 2019) and biological treatment (Paz et al, 2017;Rima et al, 2022;R. Wang et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Adsorption activity of spent coffee ground biochar for the removal of Vivizole Red 3BS dye from aqueous solution

Adamu

Zewge

Chebude

2023

Preprint

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Spent coffee ground (SCG) is rich in carbon, and slow pyrolysis can convert biomass into biochar that can be used as an adsorbent to remove dyes. In one-step carbonization and activation of SCG, iron (III) chloride and K2CO3 were used as a catalyst and solid-state activator, respectively. The predictive model for the removal of the dye by the activated SCG biochar was evaluated through response surface methodology- central composite design (RSM-CCD). ANOVA result analysis showed that among the model terms, the effect of pH was the most significant in removing the Vivizole Red 3 BS 150 % (VR 3BS) dye. The optimum values suggested by the CCD were an initial dye concentration of 20 mg/L, pH 3, an adsorbent dose of 0.5 g per 100 mL, and a contact time of 60 min, where the optimum removal of the dye was 94 %. The optimum conditions were validated using synthetic and textile wastewater, and the percent removals of the VR 3BS dye by the activated SCG were 96% and 90 %, respectively. The dye removal efficiency of activated SCG biochar was more significant than that of commercial activated carbon. The Langmuir model best described the adsorption isotherm. Adsorption kinetic data fitted well to the pseudo-second-order model. Both intraparticle and film diffusions affected the dye's adsorption rate. The thermodynamics study has shown that the adsorption process was a spontaneous, less random, exothermic process governed by a physical sorption mechanism. Thermal regeneration of the exhausted biochar improved VR 3BS dye removal efficiency.

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Electrochemical oxidation of direct blue 86 dye using MMO coated Ti anode: modelling, kinetics and degradation pathway

Cited by 23 publications

References 106 publications

Modelling and optimization of fenton process for decolorization of azo dye (DR16) at microreactor using artificial neural network and genetic algorithm

Modelling and optimization of fenton process for decolorization of azo dye (DR16) at microreactor using artificial neural network and genetic algorithm

Improved Operation of Chloralkaline Reversible Cells with Mixed Metal Oxide Electrodes Made Using Microwaves

Adsorption activity of spent coffee ground biochar for the removal of Vivizole Red 3BS dye from aqueous solution

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