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<p>Current electrochemical membrane reactors (EMRs) focus on half-cell reactions, which limits their efficiency. Herein, an EMR-P with full-cell reactions was constructed using a carbon membrane (CM) as the cathode and a TiO<sub>2</sub>-loaded CM as the anode. Noteworthy, this proposed innovative design has no ion-exchange membrane and consists of two permeates for anodic electrocatalytic and cathodic electro-Fenton processes. Results showed that the removal rates of phenol and COD by EMR-P were 99.2% and 93.9%, respectively, with energy consumption of 0.43 kWh kg COD<sup>–1</sup>, which were superior to those of other EMRs. Such superior performance of EMR-P was attributed to the synergism of electro-Fenton and electrocatalytic oxidation, as well as the high adsorption property of CM, which promoted <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41545_2024_432_Article_IEq1.gif" Format="GIF" Height="20" Rendition="HTML" Resolution="72" Type="Linedraw" Width="27" /> </InlineMediaObject> <EquationSource Format="TEX">\({1\atop}{\rm{O}}_{2}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mfrac linethickness="0"> <mrow> <mn>1</mn> </mrow> <mrow /> </mfrac> <msub> <mrow> <mi mathvariant="normal">O</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> </mrow> </math></EquationSource> </InlineEquation> generation and COD removal. Additionally, the cathode made more contribution to the COD removal (59.0%) than the anode (41.0%). Overall, this work provides several insights into the design of EMRs for cleaning industrial wastewater.</p>

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Electrochemical reactor with carbon membrane electrodes for efficient phenol removal via anode and cathode synergism

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月7日

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  • Zishang Chen,
  • Hong Wang,
  • Yuxuan Zhu,
  • Xiaoping Chen,
  • Shuanglin Gui,
  • Aijing Ma,
  • Jianxin Li

摘要

Current electrochemical membrane reactors (EMRs) focus on half-cell reactions, which limits their efficiency. Herein, an EMR-P with full-cell reactions was constructed using a carbon membrane (CM) as the cathode and a TiO2-loaded CM as the anode. Noteworthy, this proposed innovative design has no ion-exchange membrane and consists of two permeates for anodic electrocatalytic and cathodic electro-Fenton processes. Results showed that the removal rates of phenol and COD by EMR-P were 99.2% and 93.9%, respectively, with energy consumption of 0.43 kWh kg COD–1, which were superior to those of other EMRs. Such superior performance of EMR-P was attributed to the synergism of electro-Fenton and electrocatalytic oxidation, as well as the high adsorption property of CM, which promoted \({1\atop}{\rm{O}}_{2}\) 1 O 2 generation and COD removal. Additionally, the cathode made more contribution to the COD removal (59.0%) than the anode (41.0%). Overall, this work provides several insights into the design of EMRs for cleaning industrial wastewater.