RUI: Characterizing the Sources, Fates, and Transformation Products of Conjugated, Free, and Halogenated Estrogens in a Sewage-Impacted River

1606190 Griffith在全球范围内，废水可能是地表沃茨碳、营养物和污染物的重要来源。内分泌干扰化学品，如类固醇雌激素，在低浓度下对水生脊椎动物产生不利影响，是废水中可能存在的化合物之一。这项研究将通过实验室，现场和建模实验相结合来完成，并将利用以前优化的分析技术在PI laborator.The首要目标的本研究是提高控制废水来源的基本过程的理解和环境的命运雌激素和卤代雌激素在水生系统。这项研究有可能改变我们对典型的污水处理厂，利用活性污泥二级处理和次氯酸盐为基础的消毒雌激素通量的理解。本项目的目标是使用实验室，现场和模拟实验相结合，以解决：1）卤代雌激素的形成和分布在污水处理厂的污水，2）在环境相关浓度的光解和生物降解，和，3）卤代雌激素的命运在污水影响的河流。在这个项目中收集的数据将提供直接的数值输入到简单的质量平衡和运输模型，将用于预测雌激素浓度的威拉米特河，这是许多河流的代表，接收废水和雨水的组合输入。该项目将生成一系列雌激素结构的动力学数据和转化产物信息，这些信息可用于开发未来的定量结构-活性关系，参数化现有的命运模型，并确定对废水和自然沃茨中类似药物和有机污染物的形成和命运的影响。Mind Open Media的PI和媒体专家将制作和分发播客，重点关注废水处理的概念和应用，以及环境中化学品的命运。PI将向在废水处理技术和河流系统健康方面有既得利益的国家实体提供研究结果。最后，该项目还资助本科生在一个更大的机构进行研究，在那里他们将能够利用质谱设施。

1606190GriffithGlobally, wastewater can be a significant source of carbon, nutrients, and contaminants to surface waters. Endocrine disrupting chemicals such as steroidal estrogens, which have adverse effects on aquatic vertebrates at low concentrations, are among the compounds which can be in the wastewater. This study will be accomplished through a combination of laboratory, field, and modeling experiments, and will take advantage of previously optimized analytical techniques in the PIs laboratory.The overarching goal of this study is to improve the understanding of the fundamental processes that control wastewater derived sources and the environmental fate of estrogens and halogenated estrogens in aquatic systems. This study has the potential to transform our understanding of estrogen flux from typical wastewater treatment plants that utilize activated sludge secondary treatment and hypochlorite-based disinfection. The objectives of this project use a combination of laboratory, field, and modeling experiments to address: 1) halogenated estrogen formation and distribution in wastewater treatment plant effluent, 2) photolysis and biodegradation at environmentally relevant concentrations, and, 3) fate of halogenated estrogens in a sewage-impacted rivers. The data collected during this project will provide direct numerical inputs into simple mass balance and transport models that will be used to predict estrogen concentrations in the Willamette River, which is representative of many rivers that receive combined inputs from wastewater and storm water. This project will generate kinetic data and transformation product information for a range of estrogen structures that can be used to develop quantitative structure-activity relationships in the future, parameterize existing fate models, and determine the impact on the formation and fate of similar pharmaceuticals and organic contaminants in wastewater and natural waters. The PI and media experts at Mind Open Media will produce and distribute podcasts focused on the concepts and applications of wastewater treatment, and, the fate of chemicals in the environment. The PI will provide the research findings to state entities with a vested interest in wastewater treatment technologies and the health of river systems. Lastly, the project also funds undergraduate students to conduct research at a larger institution where they will be able to utilize the mass spectrometry facilities.