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首页> 外文期刊>Environmental Science & Technology >Degradation of endocrine disrupting chemicals bisphenol A, ethinyl estradiol, and estradiol during UV photolysis and advanced oxidation processes
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Degradation of endocrine disrupting chemicals bisphenol A, ethinyl estradiol, and estradiol during UV photolysis and advanced oxidation processes

机译：在紫外线光解和高级氧化过程中降解内分泌的化学物质双酚A，乙炔雌二醇和雌二醇

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摘要

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.
机译：通过紫外线（UV）辐射光解和UV /过氧化氢高级氧化工艺（AOP）研究了三种破坏内分泌的化学物质（EDC），双酚A，乙炔雌二醇和雌二醇的降解。在美国和欧洲国家，这些EDC在废水和地表水中的含量都很低，可能通过与内分泌系统的相互作用而对人类和野生生物造成不利影响，因此必须在进入公共饮用水供应之前进行处理。由于使用常规水处理系统只能去除许多EDC，因此需要评估其他处理方法。对于每个测试的EDC，得出了可直接用于单色低压（LP）紫外灯和多色中压（MP）紫外灯的直接UV光解量子产率，并开发了二阶羟基自由基速率常数。这些参数被用来成功模拟实验室和天然水域中EDC的紫外线处理。与发出单色254 nm辐射的常规LP UV灯相比，多色MP UV辐射源对直接光解降解更有效。但是，在所有情况下，与直接UV光解处理相比，利用UV / H2O2高级氧化可以更有效地降解EDC。

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