XiaoHaiwen,LiXingdi,ZhaiJun,et al.Treatment Efficiency of Dye Wastewater by Graphene Gas Diffusion Electrode under Waterproof Aeration ModeAbstract： Keywords：[J].China Water & Wastewater,2026,42(13):99-104.
Treatment Efficiency of Dye Wastewater by Graphene Gas Diffusion Electrode under Waterproof Aeration ModeAbstract： Keywords：
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第42卷
Number:
第13期
Page:
99-104
Column:
Date of publication:
2026-07-01
- Keywords:
- dye wastewater; electro?Fenton method; gas diffusion electrode; waterproof aeration; graphene
- Abstract:
- To improve the treatment efficiency of printing and dyeing wastewater by the electro-Fenton method, a graphene gas diffusion electrode (GDE) was prepared and a non-immersive waterproof aerator was designed. The treatment efficiency and reaction mechanism of the graphene GDE electro-Fenton system for dye wastewater under waterproof aeration mode were investigated. The results showed that the graphene GDE exhibited good electro-Fenton catalytic activity, and its performance was significantly superior to that of conventional stainless steel and carbon felt electrodes. The waterproof aeration mode could overcome the limitation of dissolved oxygen concentration in water, increase H2O2 production and dye decolorization rate, and generate a shear-scouring effect on the electrode surface, thereby enhancing electrode stability and anti-fouling property. Under the waterproof aeration mode, the graphene GDE demonstrated good stability, reusability, and universal applicability to different types of dyes. When Fe2+ was present in the system, ·OH and 1O2 were the primary radical contributing to the degradation of organic dyes; in the absence of Fe2+, the main contributing radicals were 1O2 and ·O2-.
Last Update:
2026-07-01