The integration of PbO2-based EAOPs with other advanced oxidation processes for improved treatment of water and wastewater

Rahmani, Alireza; Shabanloo, Amir; Shabanloo, Nader; Torkshavand, Zahra; Dargahi, Abdollah; Ansari, Amin

doi:10.1016/j.coelec.2022.101204

Cited by 16 publications

(6 citation statements)

References 77 publications

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“…In previous studies, the Pb/PbO 2 electrode has been extensively characterized using electrochemical techniques to evaluate its performance and properties. − Electrochemical characterization provides valuable insights into the electrochemical behavior and stability of the electrode material. Various electrochemical tests, such as cyclic voltammetry (CV), linear sweep voltammetry (LSV), electrochemical active surface area (EASA), and electrochemical impedance spectroscopy (EIS), have been employed to investigate the redox reactions, charge transfer kinetics, and surface properties of the Pb/PbO 2 electrode.…”

Section: Experimental Techniquementioning

confidence: 99%

Demineralization of Oxalic Acid Solutions by Anodic Oxidation in a Stirred Tank Electrochemical Reactor: Experimental and Modeling Study

El Gheriany,

Abdel-Aziz,

El-Ashtoukhy

et al. 2024

Ind. Eng. Chem. Res.

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This study investigates the anodic oxidation of oxalic acid (OA) in wastewater by focusing on a stirred tank electrochemical reactor with a low-cost lead anode. The reactor design, which features a circular array of vertical lead cylinders, aims to enhance the current distribution and mass transfer. Response surface methodology (RSM) is employed to systematically explore the impact of the impeller rotation speed, current density, and initial OA concentration on the efficiency of OA removal. The investigation reveals that impeller rotation speed and current density significantly influence OA removal, while the initial OA concentration exhibits opposing effects. Notably, the study emphasizes the crucial role of contact time and reveals its significant influence on the overall process kinetics and adherence to first-order kinetics. The study also considers the role of sulfate ions in enhancing the electrochemical mineralization of OA. The derived empirical model provides insights into the interplay of operating parameters in influencing the oxidation kinetics. Additionally, the study employs RSM to optimize OA removal efficiency; in ideal circumstances, 96% of the acid was eliminated within a time frame of 2 h. Electrical energy consumed during electrolysis ranged from 2 to 11.4 kWh/kg contingent upon the specific operational parameters. The findings contribute to the design of efficient and environmentally friendly wastewater treatment processes for OA removal in diverse industrial applications. The merits of the present reactor compared with the traditional parallel plate cell are outlined.

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Section: Experimental Techniquementioning

confidence: 99%

Demineralization of Oxalic Acid Solutions by Anodic Oxidation in a Stirred Tank Electrochemical Reactor: Experimental and Modeling Study

El Gheriany,

Abdel-Aziz,

El-Ashtoukhy

et al. 2024

Ind. Eng. Chem. Res.

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“…24 Moreover, the necessity for the enhancement of anodic efficiency, safety, and stability cannot be overstated, as these attributes are paramount for the advancement of electrochemical technologies. 25,26 Doping (metal, non-metal, or rare earth elements) is an effective strategy to enhance the stability of PbO 2 coatings. Cerium (Ce), distinguished by its unique Ce(III)/Ce(IV) valence transfer mechanism, could enhance chemical adsorption through the creation of active oxygen vacancies in the hydration region.…”

Section: Introductionmentioning

confidence: 99%

Ce-doped three-dimensional graphite felt/PbO₂ anode: single-step room-temperature electrodeposition and efficient electrocatalytic degradation of tetracycline

Huang,

Zheng,

Chen

et al. 2024

New J. Chem.

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“…Among them, advanced oxidation technology based on activated persulfate (PS) has been widely used [5,6]. Under heat [7,8], alkali [9], UV [10], transition metal [11], electrochemical, and sonochemical [12,13] action, among others, PS can generate sulfate radicals (SO 4…”

Section: Introductionmentioning

confidence: 99%

Efficiency of Orange Yellow II Degradation by Synergistic Hydroxylamine with Fe2+ to Activate Peroxymonosulfate Oxidation: Machine Learning Prediction and Performance Optimization

Zhou

Zhang

Ming

2023

Water

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A back-propagation neural network (BPNN) was used to model and optimize the process of hydroxylamine (HA)-enhanced Fe2+ activating peroxymonosulfate (PMS). Using HA-enhanced Fe2+ to activate PMS is a cost-effective method to degrade orange II (AO7). We investigated the individual and interactive effects of the concentrations of Fe2+, HA, and PMS on the degradation of AO7. The R2 of the BPNN model was 0.99852, and the data were distributed around y = x. Sensitivity analysis showed that the relative importance of each factor was as follows: HA > Fe2+ > PMS. The optimized results obtained by the genetic algorithm were as follows: the concentration of Fe2+ was 35.33 μmol·L−1, HA was 0.46 mmol·L−1, and PMS was 0.93 mmol·L−1. Experiments verified that the AO7 degradation effect within 5 min was 95.7%, whereas the predicted value by the BPNN was 96.2%. The difference between predicted and experimental values is 0.5%. This study provides a new tool (machine learning) to accurately predict the concentrations of HA, Fe2+, and PMS to degrade AO7 under various conditions.

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The integration of PbO2-based EAOPs with other advanced oxidation processes for improved treatment of water and wastewater

Cited by 16 publications

References 77 publications

Demineralization of Oxalic Acid Solutions by Anodic Oxidation in a Stirred Tank Electrochemical Reactor: Experimental and Modeling Study

Demineralization of Oxalic Acid Solutions by Anodic Oxidation in a Stirred Tank Electrochemical Reactor: Experimental and Modeling Study

Ce-doped three-dimensional graphite felt/PbO₂ anode: single-step room-temperature electrodeposition and efficient electrocatalytic degradation of tetracycline

Efficiency of Orange Yellow II Degradation by Synergistic Hydroxylamine with Fe2+ to Activate Peroxymonosulfate Oxidation: Machine Learning Prediction and Performance Optimization

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The integration of PbO2-based EAOPs with other advanced oxidation processes for improved treatment of water and wastewater

Cited by 16 publications

References 77 publications

Demineralization of Oxalic Acid Solutions by Anodic Oxidation in a Stirred Tank Electrochemical Reactor: Experimental and Modeling Study

Demineralization of Oxalic Acid Solutions by Anodic Oxidation in a Stirred Tank Electrochemical Reactor: Experimental and Modeling Study

Ce-doped three-dimensional graphite felt/PbO2 anode: single-step room-temperature electrodeposition and efficient electrocatalytic degradation of tetracycline

Efficiency of Orange Yellow II Degradation by Synergistic Hydroxylamine with Fe2+ to Activate Peroxymonosulfate Oxidation: Machine Learning Prediction and Performance Optimization

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Product

Resources

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Ce-doped three-dimensional graphite felt/PbO₂ anode: single-step room-temperature electrodeposition and efficient electrocatalytic degradation of tetracycline