CAREER: Impact of Pesticide and Antibiotic Cocktails on Nitrogen Removal Processes in Treatment Wetlands

职业：农药和抗生素混合物对处理湿地脱氮过程的影响

基本信息

批准号：
2042761
负责人：
Tiffany Messer
金额：
$ 52.91万
依托单位：
University of Kentucky Research Foundation
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-07-01 至 2026-06-30
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2042761&HistoricalAwards=false
关键词：
CAREER Impact Pesticide Antibiotic Cocktails

项目摘要

Nitrate is the most commonly observed chemical contaminant of ground and surface water in the world. This prevalence leads to nitrate being the major cause for drinking water impairment. Common use pesticides and antibiotics have also become ubiquitous in waterways worldwide, particularly in agricultural settings. While these chemicals are important for agricultural productivity, their release to the environment has resulted in significant impacts to agroecosystem food webs and human health, including bee colony disruptions, human reproductive and development disruption, and the spread of antibiotic resistance. Treatment wetland systems have the potential to be a cost-effective alternative to prevent the release of these chemicals and other emerging contaminants to the environment. However, there is a lack of understanding whether treatment wetlands can remove both nitrate and contaminant mixtures that exist in runoff; a critical knowledge gap that prevents more widespread adoption of this technology. The goal of this project is to develop science-based guidance for the use of treatment wetlands to remove contaminant mixtures and nitrate to improve water quality. This goal will be achieved by evaluating the influence of specific contaminants on wetland treatment processes using state-of-the-science tracers and automated sensing technology. Successful completion of this project may lead to cost-effective treatment alternatives for contaminants to protect human and ecological health in low income, rural communities. These results will be used to develop innovative community water quality education programs both locally and remotely. Additional engagement of community members will advance scientific literacy and diversity through hands-on engineering experiences for underrepresented groups in STEM. These groups are often among those most impacted by degraded water quality and, as a result, have the greatest potential ability to benefit from these efforts.The twin goals of this CAREER project are to improve understanding of how antibiotics and pesticides impact nitrate removal in wetlands while engaging communities through an innovative citizen science and education platform to advance science literacy and STEM workforce development. The following specific objectives are designed to achieve these goals: i) Identify water quality parameters that impact nutrient removal efficacy through the use of 15N isotopic enrichment studies in land-based and floating treatment wetland systems; ii) Create a toolkit for identifying ideal placement and sizing of wetlands using three-dimensional multiparameter in-situ sensor technologies; iii) Train future practitioners through mentorship and the development of pre-K and high school curricula to deliver hands-on ecological systems education; and iv) Provide citizen science opportunities and water quality training virtually and at field locations to engage affected rural communities. Field and laboratory scale experimental approaches will bridge gaps between observation and kinetic modeling from microcosm and mesocosm experiments with field-scale monitoring and modeling. Successful completion of this research will advance knowledge by elucidating mechanisms controlling nitrogen removal and transformation in two distinct wetland treatment systems. Knowledge will also be advanced through understanding how contaminants of emerging concern impact microbially mediated denitrification in wetlands. Further benefits result from improved protection of downstream water quality and reservoir resilience by evaluating the influence of specific contaminants of emerging concern on wetland ecosystem services. These results have potential to benefit society by accelerating the development of treatment wetland design and management based on science-based observation to enhance treatment options for water in agricultural and other settings.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

硝酸盐是世界上最常见的地面和地表水的化学污染物。这种患病率导致硝酸盐是饮用水损害的主要原因。普通用途的农药和抗生素在全球的水道上也已普遍存在，尤其是在农业环境中。尽管这些化学物质对于农业生产力很重要，但它们对环境的释放已对农业生态系统食品网和人类健康产生重大影响，包括蜜蜂菌落破坏，人类生殖和发展中断以及抗生素耐药性的传播。处理湿地系统有可能成为一种具有成本效益的替代方法，以防止这些化学物质和其他新兴污染物释放到环境中。但是，缺乏理解湿地是否可以消除径流中存在的硝酸盐和污染物混合物。一个批判性的知识差距，可以防止这种技术更广泛地采用。该项目的目的是开发基于科学的指导，以使用治疗湿地去除污染物混合物和硝酸盐以提高水质。通过使用科学示踪剂和自动传感技术评估特定污染物对湿地治疗过程的影响，可以实现此目标。该项目的成功完成可能会导致污染物为保护低收入，农村社区保护人类和生态健康的污染物的替代方法。这些结果将用于在本地和远程开发创新的社区水质教育计划。社区成员的额外参与将通过为STEM中代表性不足的群体提供动手的工程经验来提高科学素养和多样性。这些群体通常是受降解水质影响最大的群体之一，因此，从这些努力中受益最大的潜在能力。该职业项目的双胞胎目标是提高人们对抗生素和农药的了解如何影响湿地中的硝酸盐去除湿地，同时通过创新的公民科学和教育平台来促进科学识字率和茎的劳动力发展，从而使湿地中的硝酸盐去除。以下特定目标旨在实现这些目标：i）通过在陆基和浮动处理湿地系统中使用15N同位素富集研究来确定影响营养清除功效的水质参数； ii）创建一个工具包，用于使用三维多参数的原位传感器技术来识别湿地的理想位置和尺寸； iii）培训未来的从业人员，通过指导以及开发前K和高中课程，以提供动手的生态系统教育； iv）实际上和在现场提供了公民科学机会和水质培训，以吸引受影响的农村社区。现场和实验室规模的实验方法将通过磁场尺度监测和建模进行观察和动力学建模之间的差距。这项研究的成功完成将通过阐明控制氮的去除和转化的机制来提高知识。知识还将通过了解新兴关注的污染物如何影响湿地中微生物介导的反硝化。通过评估新出现的关注对湿地生态系统服务的特定污染物的影响，改善了下游水质和储层弹性的保护带来的进一步好处。这些结果有可能通过基于科学的观察来加速湿地设计和管理的发展，从而增强农业和其他环境中的水的治疗选择，从而使社会受益。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛的审查标准通过评估来获得支持的。