化工学报2026，Vol.77Issue(2)：859-868,封3,11.DOI:10.11949/0438-1157.20250606
Fe-C填料作电芬顿阴极体系降解苯酚机理研究
Study on the mechanism of phenol degradation by Fe-C fillers as electro-Fenton cathode system
摘要
Abstract
Phenol-containing wastewater is difficult to degrade,easily accumulates,and poses serious risks to humans and ecosystems.The Fe-C fillers were used as the cathode in an electro-Fenton system to degrade phenol in wastewater in this study.The electro-Fenton process promotes the reduction of iron at the Fe-C cathode surface,thereby enhancing the generation conditions for active substances in micro-electrolysis and significantly improving phenol degradation efficiency.The Fe-C filler cathode can transfer electrons to O2 to generate H2 O2 in situ.Concurrently,the direct current promotes the micro-electrolysis reaction,enhancing the corrosion of Fe0 within the Fe-C fillers.Furthermore,O2 acquires electrons at the carbon cathode of the fillers,generating H2 O2 via the·O-2 pathway.Additionally,the Fe-C cathode reduces Fe3+,sustaining a stable concentration of Fe2+in the system.The active substances quenching experiments confirmed that·OH is the dominant active substances responsible for phenol degradation in this system.Characterization of the Fe-C filler before and after reaction revealed that the Fe-C filler cathode effectively reduces surface iron oxides,mitigating passivation layer formation.In the electro-Fenton system utilizing Fe-C filler as the cathode,the phenol and COD removal rates reached 77.26%and 69.25%,respectively.This represents a significant enhancement compared to both stand-alone Fe-C micro-electrolysis and electro-Fenton systems.Additionally,the Fe-C filler cathode exhibits advantages of low energy consumption and excellent cycling stability.关键词
苯酚/微电解/活性物质/Fe-C填料/电芬顿Key words
phenol/micro-electrolysis/active substance/Fe-C filler/electro-Fenton分类
资源环境引用本文复制引用
王忠华,邹玉龙,黄云騂,樊一博,周杰,赵海谦..Fe-C填料作电芬顿阴极体系降解苯酚机理研究[J].化工学报,2026,77(2):859-868,封3,11.基金项目
黑龙江省自然科学基金项目(LH2022E032) （LH2022E032）
