Wastewater treatment by anodic oxidation in electrochemical advanced oxidation process: Advance in mechanism, direct and indirect oxidation detection methods

Fu, Rui; Zhang, Peng-Shuang; Jiang, Yuan-Xing; Sun, Lin; Sun, Xuhui

doi:10.1016/j.chemosphere.2022.136993

Cited by 74 publications

(14 citation statements)

References 91 publications

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“…In addition, once the disinfectants are consumed in this parasitic reaction, there are no oxidants in the system to allow disinfection (elimination of ARB and/or ARG), which reduces the efficiency of the system (Chen et al 2023 ; Kribeche et al 2022 ; Mora et al 2022 ; Salmerón et al 2021 ). However, it is necessary to observe three reasons that may increase the interest in the study and use of the combined H 2 O 2 /Cl 2 system, which may be ignored by some authors: (i) to minimize parasitic reactions between H 2 O 2 and Cl 2 in a combined disinfection system, the doses of each compound must be carefully controlled and the concentration of oxidants and reaction by-products in the treated water must be regularly monitored (Fu et al 2023 ; Kribeche et al 2022 ; Wang et al 2019a , b , c ). (ii) Catalysts or co-oxidants may be added to improve the efficiency of the oxidation process and reduce the formation of toxic reaction by-products (Abo Atia et al 2021 ; Martínez-Pachón et al 2021 ; Meena et al 2021 ).…”

Section: Resultsmentioning

confidence: 99%

Systematic analysis of the scientific-technological production on the use of the UV, H2O2, and/or Cl2 systems in the elimination of bacteria and associated antibiotic resistance genes

Espinosa-Barrera,

Gómez-Gómez,

Vanegas

et al. 2024

Environ Sci Pollut Res

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This study presents a systematic review of the scientific and technological production related to the use of systems based on UV, H2O2, and Cl2 for the elimination of antibiotic-resistant bacteria (ARB) and genes associated with antibiotic resistance (ARGs). Using the Pro Know-C (Knowledge Development Process-Constructivist) methodology, a portfolio was created and analyzed that includes 19 articles and 18 patents published between 2011 and 2022. The results show a greater scientific-technological production in UV irradiation systems (8 articles and 5 patents) and the binary combination UV/H2O2 (9 articles and 4 patents). It was emphasized that UV irradiation alone focuses mainly on the removal of ARB, while the addition of H2O2 or Cl2, either individually or in binary combinations with UV, enhances the removal of ARB and ARG. The need for further research on the UV/H2O2/Cl2 system is emphasized, as gaps in the scientific-technological production of this system (0 articles and 2 patents), especially in its electrochemically assisted implementation, have been identified. Despite the gaps identified, there are promising prospects for the use of combined electrochemically assisted UV/H2O2/Cl2 disinfection systems. This is demonstrated by the effective removal of a wide range of contaminants, including ARB, fungi, and viruses, as well as microorganisms resistant to conventional disinfectants, while reducing the formation of toxic by-products.

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Section: Resultsmentioning

confidence: 99%

Systematic analysis of the scientific-technological production on the use of the UV, H2O2, and/or Cl2 systems in the elimination of bacteria and associated antibiotic resistance genes

Espinosa-Barrera,

Gómez-Gómez,

Vanegas

et al. 2024

Environ Sci Pollut Res

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“…It should not be forgotten that the synergistic effect of many parameters such as the type of pollutants, the preferred electrode material, the type of electrolyte, and the applied current or potential will affect the efficiency obtained as a result of the AO process. Therefore, increasing the applied current alone may not be sufficient to dramatically increase the degradation performance of pollutants [16].…”

Section: Anodic Oxidation Resultsmentioning

confidence: 99%

“…Among the strongest oxidizing radicals used is the hydroxyl radical ( • OH, E°=2.80 V/SHE). Recently, studies for removing organic pollutants from wastewater by sulfate radical (SO4 •-, E°=2.50-3.10 V/SHE) have increased remarkably [16]. Two of the methods that have an important place among EAOPs are the electro-Fenton (EF) and anodic oxidation (AO) processes used in this study.…”

Section: Introductionmentioning

confidence: 99%

Application and Performance Evaluation of Chemical Coagulation, Electrocoagulation, Electro-Fenton and Anodic Oxidation Processes in the Treatment of Glass Fiber Manufacturing Wastewater

KAR,

GÖRMEZ,

GOZMEN

2024

Sakarya University Journal of Science

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This study investigated the oxidation of wastewater generated during the production of glass fiber manufacturing material, which contains high organic carbon (18.32 g/L) and has a pH of 8.8, by chemical coagulation and electro-advanced oxidation techniques. It was determined that the organic content of the wastewater decreased by 53% with chemical coagulation. After electrocoagulation with Al/Al electrode pair for 300 minutes at 500 mA, 73% TOC removal was achieved at pH 8.8. While 50% mineralization was completed in 2 h at 400 mA in electrocoagulation with Fe/Fe electrode pair, 71% TOC removal was obtained in the combined EC/EF process by adding hydrogen peroxide to the medium under the same conditions. It was observed that the success of the anodic oxidation methods alone was lower. The electro-Fenton application after electrocoagulation was effective (78% TOC removal) but required work at pH 3 and a longer treatment time.

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“…The selection of anode materials is the key point of EAOPs. Anode materials as a working electrode are the core of electrochemical oxidation processes in the current efficiency of anodic oxidation and RE [24]. For the evaluation of anode material, the effects of the anode material on the RE, EC and Esp of MCB waste gas by electrochemical oxidation are shown in Figure 2.…”

Section: Effect Of Anode Materialsmentioning

confidence: 99%

Treatment of Monochlorobenzene from Polymers Process through Electrochemical Oxidation

Wang,

Yue,

Wang

et al. 2024

Polymers

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With the rapid development of the economy and the demands of people’s lives, the usage amount of polymer materials is significantly increasing globally. Chlorobenzenes (CBS) are widely used in the industrial, agriculture and chemical industries, particularly as important chemical raw materials during polymers processes. CBS are difficult to remove due to their properties, such as being hydrophobic, volatile and persistent and biotoxic, and they have caused great harm to the ecological environment and human health. Electrochemical oxidation technology for the treatment of refractory pollutants has been widely used due to its high efficiency and easiness of operation. Thus, the electrochemical oxidation system was established for the efficient treatment of monochlorobenzene (MCB) waste gas. The effect of a single factor, such as anode materials, cathode materials, the electrolyte concentration, current density and electrode distance on the removal efficiency (RE) of MCB gas were first studied. The response-surface methodology (RSM) was used to investigate the relationships between different factors’ conditions (current density, electrolyte concentration, electrode distance), and a prediction model was established using the Design-Expert 10.0.1 software to optimize the reaction conditions. The results of the one-factor experiments showed that when treating 2.90 g/m3 MCB gas with a 0.40 L/min flow rate, Ti/Ti4O7 as an anode, stainless steel wire mesh as a cathode, 0.15 mol/L NaCl electrolyte, 10.0 mA/cm2 current density and 4.0 cm electrode distance, the average removal efficiency (RE), efficiency capacity (EC) and energy consumption (Esp) were 57.99%, 20.18 g/(m3·h) and 190.2 (kW·h)/kg, respectively. The results of the RSM showed that the effects of the process parameters on the RE of MBC were as follows: current density > electrode distance > electrolyte concentration; the interactions effects on the RE of MBC were in the order of electrolyte concentration and current density > current density and electrode distance > electrolyte concentration and electrode distance; the optimal experimental conditions were as follows: the concentration of electrolyte was 0.149 mol/L, current density was 18.11 mA, electrode distance was 3.804 cm. Under these conditions, the RE achieved 66.43%. The response-surface variance analysis showed that the regression model reached a significant level, and the validation results were in agreement with the predicted results, which proved the feasibility of the model. The model can be applied to treat the CBS waste gas of polymer processes through electrochemical oxidation.

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Wastewater treatment by anodic oxidation in electrochemical advanced oxidation process: Advance in mechanism, direct and indirect oxidation detection methods

Cited by 74 publications

References 91 publications

Systematic analysis of the scientific-technological production on the use of the UV, H2O2, and/or Cl2 systems in the elimination of bacteria and associated antibiotic resistance genes

Systematic analysis of the scientific-technological production on the use of the UV, H2O2, and/or Cl2 systems in the elimination of bacteria and associated antibiotic resistance genes

Application and Performance Evaluation of Chemical Coagulation, Electrocoagulation, Electro-Fenton and Anodic Oxidation Processes in the Treatment of Glass Fiber Manufacturing Wastewater

Treatment of Monochlorobenzene from Polymers Process through Electrochemical Oxidation

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