Rosenfeldt Erik J, Linden Karl G
Department of Civil and Environmental Engineering, Duke University, Durham, North Carolina 27708-0287, USA.
Environ Sci Technol. 2004 Oct 15;38(20):5476-83. doi: 10.1021/es035413p.
The degradation of three endocrine disrupting chemicals (EDCs), bisphenol A, ethinyl estradiol, and estradiol, was investigated via ultraviolet (UV) radiation photolysis and the UV/hydrogen peroxide advanced oxidation process (AOP). These EDCs have been detected at low levels in wastewaters and surface waters in both the United States and European countries, can cause adverse effects on humans and wildlife via interactions with the endocrine system, and thus must be treated before entering the public drinking water supply. Because many EDCs can only be partially removed with conventional water treatment systems, there is a need to evaluate alternative treatment processes. For each EDC tested, direct UV photolysis quantum yields were derived for use with both monochromatic low-pressure (LP) UV lamps and polychromatic medium-pressure (MP) UV lamps and second-order hydroxyl radical rate constants were developed. These parameters were utilized to successfully model UV treatment of the EDCs in laboratory and natural waters. The polychromatic MP UV radiation source was more effective for direct photolysis degradation as compared to conventional LP UV lamps emitting monochromatic UV 254 nm radiation. However, in all cases the EDCs were more effectively degraded utilizing UV/H2O2 advanced oxidation as compared to direct UV photolysis treatment.
通过紫外线（UV）辐射光解和UV/过氧化氢高级氧化工艺（AOP）研究了三种内分泌干扰化学物质（EDC）——双酚A、乙炔雌二醇和雌二醇的降解情况。在美国和欧洲国家的废水和地表水中均检测到了低浓度的这些EDC，它们可通过与内分泌系统相互作用对人类和野生动物造成不利影响，因此在进入公共饮用水供应之前必须进行处理。由于许多EDC仅能通过传统水处理系统部分去除，所以有必要评估替代处理工艺。对于每种测试的EDC，推导了直接UV光解量子产率，以用于单色低压（LP）UV灯和多色中压（MP）UV灯，并确定了二级羟基自由基速率常数。这些参数被成功用于模拟实验室和天然水中EDC的UV处理。与发射单色UV 254 nm辐射的传统LP UV灯相比，多色MP UV辐射源对直接光解降解更有效。然而，在所有情况下，与直接UV光解处理相比，利用UV/H2O2高级氧化能更有效地降解EDC。
