双极Electro-Fenton法降解水中苯酚的研究

设计了一种双极电化学芬顿方法(Bipolar Electro—Fenton；BEF)并对水中的苯酚进行了降解研究。采用热压法制备了多孔气体扩散碳电极。在无分隔槽反应装置中，以多孔气体扩散碳电极为阴极将氧气还原产生过氧化氢，铁板作阳极产生Fe2 ，直接利用两电极产物发生芬顿(Fenton)反应对苯酚进行降解。TOC、COD的检测结果表明，BEF法中所采用的气体扩散电极对苯酚的降解程度较通常废水处理中以石墨为阴极的电芬(Electro-Fenton；EF)更为彻底；而且BEF法对苯酚的降解速率比传统芬顿法更快。

DEGRADATION OF PHENOL IN WATER BY BIPOLAR ELECTROCHEMICAL-FENTON METHOD

A bipolar electrochemical-Fenton method(BEF) was designed to carry out the research on degradation of phenol in water. For this, a porous gas diffusion electrode was prepared by hot pressure method. In a reacting device without partitioning trough, the porous gas diffusion carbon electrode was used as cathode to reduce oxygen gas and generate hydrogen peroxide; the iron plate was used as anode to generate Fe2 , phenol was degraded through Fenton reaction happening by directly utilizing both electrodes' products. The results of TOC and COD examined showed that the degrading degree of phenol by the gas diffusion electrode adopted in BEF was more thorough than that by graphite cathode adopted in BEF in common wastewater treatment; moreover the degrading rate of phenol by BEF was quicker than that of traditional Fenton method.