高频脉冲介质阻挡放电去除水中17β-雌二醇

Removal of 17β-estradiol in aqueous solution by high-frequency pulse dielectric barrier discharge process

实验采用高频脉冲介质阻挡放电工艺处理水体中的17β-雌二醇(E2)。结果表明,该工艺可以有效地降解水中的E2,E2的降解过程符合一级反应动力学模型。当体系脉冲峰-峰电压为24 kV,初始浓度为100μg/L的E2在超纯水中的降解一级反应速率常数为0.1314 min-1。E2的降解速率常数随脉冲峰-峰电压的增大而升高,随E2初始浓度和溶液初始pH增加而降低,溶液初始电导率对E2的降解影响不大。

In this study, the high-frequency pulse dielectric barrier discharge process was used to treat 17 β-estradiol （E2） in water. The results show that the E2 can be removed effectively, and the rate of degrada- tion in solution followed first-order kinetics. As the pulse peak-peak voltage was 24 kV, the first order degrada- tion rate constant of E2（initial concentration was 100 μg/L） in ultra-pure water was 0. 1314 min^-1. The degra- dation rate constant of E2 increased with the increasing of pulse peak-peak voltage. And it decreased with the in- creasing of E2 initial concentration and solution pH value. Initial conductivity of the solution had little effect on the degradation of E2.