零价铁催化过二硫酸盐降解苯胺

Degradation of Aniline with Zero-valent Iron-Persulfate

采用Fe0催化过二硫酸钠(PS)降解水中苯胺(AN)。在Fe0-PS体系中,Fe0在酸性条件下被氧化生成Fe2+,Fe2+可以催化PS产生强氧化性的SO4-,发生类Fenton试剂氧化反应,从而降解AN。实验结果表明,在PS加入量为6.0 mmol/L、Fe0加入量为35.7 mmol/L、反应时间为120 min的条件下,AN降解率可达81.4%,TOC去除率达52.6%,一级反应速率常数为0.038 19 min-1。

Aniline （AN） in water was degraded with zero-valent iron （Fe0）-persulfate （PS）. In the Fe0- PS system, Fe0 is oxidized into Fe2＋ under acidic condition, and then Fe2＋ catalyzes PS to generate SO4- with strong oxidizability inducing Fenton-like oxidation reaction to degrade AN. Under the conditions of PS dosage 6.0 mmol/L, Fe0 dosage 35.7 mmol/L and reaction time 120 min, the AN degradation rate is 81.4%, the TOC removal rate is 52.6%, and the first-order reaction rate constant is 0.038 19 min-1.