Development of a highly efficient electrochemical flow-through anode based on inner in-site enhanced TiO2-nanotubes array

Chen, Min; Wang, Can; Zhao, Xin; Wang, Yingcai; Zhang, Weiqiu; Chen, Zefang; Meng, Xiaoguang; Luo, Jinming; Crittenden, John C.

doi:10.1016/j.envint.2020.105813

Cited by 52 publications

(51 citation statements)

References 49 publications

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“…(Also, flow-through electrodes eliminate Taylor dispersion in flow-by electrodes, which allows flow to bypass the electrodes.) When the flow-through anodes were adopted, EE/O was decreased by about 8.75–11.81 times compared with that with the flow-by electrodes. , COD removal per kWh using a flow-through anode was 2.52 times higher than that using a flow-by anode . When 1 kg of TOC was removed, the energy consumption with the flow-by anode was 1.598 times higher than that with the flow-through anode …”

Section: How To Save Operating Costs In the Electrocatalytic Oxidati...mentioning

confidence: 96%

“…When the current density increased from 1 to 10 mA cm –2 , EE/O correspondingly increased from 24.6 to 625.7 mW h L –1 . Increasing the fluid velocity can decrease the EE/O because the fluid velocity can increase the mass-transfer rate . EE/O decreased from 1.35 to 0.75 kW m –3 when fluid velocity increased from 0.08 to 0.32 cm s –1 .…”

Section: How To Save Operating Costs In the Electrocatalytic Oxidati...mentioning

confidence: 99%

“…More electrochemical reactive sites and higher specific surface area are created by smaller pores. Chen et al reported that, when the nominal pore sizes were 10, 20, and 50 μm, the pseudo-first-order rate constants were 0.38, 1.63, and 1.24 min –1 , respectively, and EE/O values varied from 2.5 to 0.7 kWh m –3 . The high viscosity of the SnO 2 -Sb sol–gel would cause blockage of the flow-through MP-Ti/TiO 2 -NTs/SnO 2 -Sb electrode with small pore sizes (10–20 μm) .…”

Section: How To Save Operating Costs In the Electrocatalytic Oxidati...mentioning

confidence: 99%

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Electrocatalytic Oxidation Processes for Treatment of Halogenated Organic Pollutants in Aqueous Solution: A Critical Review

Zhuo

Niu

et al. 2022

ACS EST Eng.

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Halogenated organic pollutants (HOPs) are a class of organic substances that are difficult to degrade, easily bioaccumulate, and are stable in the environment. Compared with biological, physical, and chemical methods, electrocatalytic oxidation technology has the advantages of a strong oxidation ability, high efficiency, mild reaction conditions, and high automation. The direct and indirect electrochemical oxidation mechanisms in electrocatalytic oxidation processes are discussed. The generation processes and properties of oxidative species in indirect electrochemical oxidation processes, including hydroxyl radicals, active chlorine, sulfate radicals, O 3 , H 2 O 2 , carbonate radicals, and 1 O 2 , are summarized. The cell designs involved in the flow-by, flow-through, and three-dimensional configurations are outlined. The removal ratios, intermediate products, and electrocatalytic oxidation mechanisms of halogenated pollutants, including perfluorinated, polyfluorinated, chlorinated, brominated, and iodinated organic compounds, are reviewed. The oxidative and mineralization ability, detoxification ability, and energy consumptions of electrocatalytic oxidation compared with other technologies are comprehensively evaluated. This Review are intended to introduce some effective strategies for lowering energy consumption in electrocatalytic oxidation processes. Finally, the current deficiencies and development trends in electrocatalytic oxidation are discussed.

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Section: How To Save Operating Costs In the Electrocatalytic Oxidati...mentioning

confidence: 96%

Section: How To Save Operating Costs In the Electrocatalytic Oxidati...mentioning

confidence: 99%

Section: How To Save Operating Costs In the Electrocatalytic Oxidati...mentioning

confidence: 99%

See 1 more Smart Citation

Electrocatalytic Oxidation Processes for Treatment of Halogenated Organic Pollutants in Aqueous Solution: A Critical Review

Zhuo

Niu

et al. 2022

ACS EST Eng.

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“…For instance, Chen at al. showed that removal efficiency of 2-methyl-4-iso-thiazolin-3-one in the flow-through mode was 10.3 times higher than that of the flow-by mode using an electrocatalytic membrane, and such fast kinetics was primarily attributed to the enhanced mass transfer by the convection through the membrane in the flow-through mode ( Chen et al., 2020b ).…”

Section: Mechanisms Of Electrocatalytic Membrane For Micropollutant R...mentioning

confidence: 99%

“…developed a novel electrocatalytic membrane for the removal of 2-methyl-4-isothiazolin-3-one by growing TiO 2 nanotube array on the macroporous Ti substrate, followed by a coating of SnO 2 -Sb 2 O 3 ( Chen et al., 2020c ). The removal efficiency was approximately 80% ( Chen et al., 2020b ).…”

Section: Applications Of Electrocatalytic Membranes For Micropollutan...mentioning

confidence: 99%

Recent advances in electrocatalytic membrane for the removal of micropollutants from water and wastewater

Ren

Chen

et al. 2022

iScience

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Review on Structural Adjustment Strategies of Titanium‐Based Metal Oxide Dimensionally Stable Anodes in Electrochemical Advanced Oxidation Technology

Qiu,

Wang,

Fan

et al. 2024

Adv Eng Mater

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Emerging organic pollutants and refractory pollutants in water bodies have caused severe harm to the ecological environment and human health. Electrochemical advanced oxidation processes (EAOPs) are currently one of the most effective oxidation methods to deal with refractory organic pollutants. Electrode materials serve as the most critical component in influencing the EAOP performance. Dimensionally stable anodes (DSAs) have the advantages of dimensional stability, structural diversity, chemical stability, low oxygen evolution potential and long service life, etc. Herein, several types of Ti‐based metal oxide DSAs (Ti/MOx DSAs) commonly used in EAOPs in the past 5 years, including Ti/IrO2, Ti/RuO2, Ti/PbO2, Ti/Sb–SnO2, and Ti/TiO2, are introduced. The modification methods including metal doping, composition adjustment, nanostructure construction, introduction of intermediate layers, compositing with carbon materials, and formation of 3D structures as well as the applications of these modified Ti‐based DSAs in EAOP for the rapid degradation of various organic pollutants are summarized and their advantages and current shortcomings of electrodes are pointed out. Finally, the Ti‐based DSA's current limitations and future development prospects are concluded.

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Development of a highly efficient electrochemical flow-through anode based on inner in-site enhanced TiO2-nanotubes array

Cited by 52 publications

References 49 publications

Electrocatalytic Oxidation Processes for Treatment of Halogenated Organic Pollutants in Aqueous Solution: A Critical Review

Electrocatalytic Oxidation Processes for Treatment of Halogenated Organic Pollutants in Aqueous Solution: A Critical Review

Recent advances in electrocatalytic membrane for the removal of micropollutants from water and wastewater

Review on Structural Adjustment Strategies of Titanium‐Based Metal Oxide Dimensionally Stable Anodes in Electrochemical Advanced Oxidation Technology

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