In the present work, the degradation of three estrogens (17β-estradiol (E2), estrone (E1) and 17α-ethinylestradiol (EE2)) was investigated under photoactivation of hydrogen peroxide and persulfate. Lab-scale irradiation experiments showed that both UVA and UVB radiations are able to photoactivate the oxidant precursors, although UVB is more efficient to generate radicals and therefore to degrade the targets. The efficiency of both oxidant precursors was investigated showing higher efficiency in the system with persulfate. The pseudo-first order degradation rate constants and the second order rate constants between the hydroxyl or the sulfate radicals and estrogens were measured. In order to evaluate the process efficiency in real treatment conditions, the degradation of the estrogens spiked into sewage treatment plant effluent was studied. Measurements of second order rate constants between the radical and the effluent organic matter by laser flash photolysis allowed to understand the involved quenching mechanisms. A Yeast Estrogen Screen (YES) assay was used to follow the decrease in estrogenic activity during the estrogen degradation. This assay permitted to ensure that the studied processes are not only able to degrade the estrogens but also to remove their estrogenic activity.

在目前的工作中，在过氧化氢和过硫酸盐的光活化下，研究了三种雌激素的降解（17β-雌二醇（E2），雌酮（E1）和17α-炔雌醇（EE2））。实验室规模的辐射实验表明，尽管UVB更有效地产生自由基并因此降解靶标，但UVA和UVB辐射均能够光活化氧化剂前体。对两种氧化剂前体的效率进行了研究，结果表明在过硫酸盐体系中效率更高。测量了羟基或硫酸根与雌激素之间的拟一级降解速率常数和二级降解速率常数。为了评估实际处理条件下的工艺效率，研究了掺入污水处理厂废水中的雌激素的降解情况。通过激光闪光光解法测量自由基和流出的有机物之间的二级速率常数，可以了解所涉及的猝灭机理。酵母雌激素筛选（YES）方法用于追踪雌激素降解过程中雌激素活性的降低。该测定法可以确保所研究的过程不仅能够降解雌激素，而且能够去除其雌激素活性。