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CFD simulation to optimize the design of multi-channel
electrocatalytic membrane reactor

Authors： HAN Jing， WANG Qingqing， GE Xiaolong， WANG Hong

Units： School of Material Science and Engineering, State Key Laboratory of Separation Membrane and Membrane Processes, National Center for International Joint Research on Separation Membranes，Tiangong University

KeyWords： flat multi-channel carbon membrane; electrocatalytic membrane reactor; fluid dynaruics; DMAc wastewater

ClassificationCode：TQ028

year,volume(issue):pagination： 2025,45(1):108-118

Abstract：

In this paper, an electrocatalytic membrane reactor (ECMR) was constructed using a flat multi-channel carbon membrane as electrodes, a DC regulated power supply to provide current and a peristaltic pump to provide separation power. COMSOL Multiphysics 5.6 was used to geometrically model the ECMR, simulate the hydrodynamic distribution inside the reactor, study the effect of the geometric structure on the distribution of the flow field, and evaluate it in combination with the parameters of hydraulic properties. The results indicated that the best performance was achieved when the ECMR inlet was parallel to the flat multi-channel carbon membrane and the outlet was single-ended, and the dead zone volume of ECMR was reduced from 18.86% to 8.51% as calculated from the tracer experiments. Comparing the mass transfer and degradation of N, N-dimethylacetamide (DMAc) by ECMR before and after optimization, the diffusion coefficient of ECMR was increased from 1.307 4×10-3 cm2/s to 1.473×10-3 cm2/s. Meanwhile, the removal of 100 mg/L DMAc was increased by 14.5% and COD removal by 9%. The above of results indicated that the geometry optimization of ECMR can enhance the water treatment performance and mass transfer, which has great potential for application in the field of wastewater treatment.

Funds：

国家重点研发计划项目（2020YFA0211002）

AuthorIntro：

韩静（1997-），女，陕西西安人，硕士生，从事电催化膜反应器CFD优化与废水处理.

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