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Hollow fiber hydrophobic membrane-assisted cathodic enhancement of H2O2
on-line electrosynthesis performance study

Authors： LIU Shan， ZHAO Xuehui， WANG Mengxue

Units： School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China

KeyWords： electro-Fenton; hollow fiber hydrophobic membrane; H2O2; oxygen mass transfer

ClassificationCode：TQ123.6

year,volume(issue):pagination： 2025,45(2):117-126

Abstract：

Oxygen mass transfer and utilization are the key factors affecting the efficiency of electro-Fenton process.In this study, a hollow fiber membrane aeration-assisted cathodic on-line electrosynthesis of H2O2 process unit was constructed to enhance the oxygen transfer and concentration in the solution using hollow fiber membrane aeration to strengthen the generation efficiency of cathodic on-line electrosynthesis of H2O2.The effects of process parameters such as pH, current density, polar plate spacing, aeration volume and aeration position on the online generation of H2O2 were investigated.The experimental results showed that the hollow fiber hydrophobic membrane aeration-assisted cathode was significantly better than the ceramic head aeration process in terms of H2O2 production and oxygen utilization, and under the conditions of intermediate aeration (1 cm from the cathode), aeration volume of 10 mL/min, current density of 19.2 mA/cm2, and polarplate spacing of 4 cm, the production of H2O2 could reach 59.20 mg/L with a current efficiency of 97.42%, and the oxygen utilization rate was 1.63%.The experimental results provide important theoretical support for the development and application of hollow fiber hydrophobic membrane aeration coupled with Electro-Fenton process.

Funds：

国家自然科学基金项目(U23B20165)

AuthorIntro：

刘杉（2001-），女，河北石家庄人，硕士研究生，主要研究方向为废水资源化及回用

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