WRF/WERF: Functionalized nanofiber networks for nutrient removal and recovery: Integrated electrochemical controls for sustainable and autonomous treatment technologies

WRF/WERF：用于营养物去除和回收的功能化纳米纤维网络：用于可持续和自主处理技术的集成电化学控制

• 批准号: 1804757
• 负责人: Nosang Myung
• 金额: $ 46万
• 依托单位: University of California-Riverside
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-06-01 至 2020-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1804757&HistoricalAwards=false
• 关键词: WRF; WERF; Functionalized; nanofiber; networks

The nitrogen and phosphorous in agricultural runoff harms ecosystems, contaminates drinking water, and poses a risk to human health. These pollutants are not effectively removed by conventional treatment technologies. New approaches that both treat the water and recover these valuable nutrients are needed. This project will develop new integrated multi-functional materials that have dual activity for simultaneous nitrogen and phosphorous removal, with integrated electroactive substrates to facilitate nutrient release and sensing. It is anticipated that the integrated material functionality will increase the reliability and autonomy of drinking water treatment in off-grid rural areas or small public water systems. This project will use electrospinning to fabricate multifunctional, electrochemically active composite nanofibers. The fibers will incorporate dual active sites, with quaternary ammonium strong base anion exchange sites to target nitrogen, and iron oxides to simultaneously target phosphorous. The electrospinning process will be optimized to maximize surface availability of these active sites through interactions of surfactants, metal oxides, and polymers. Electroactive substrates will be incorporated to promote material regeneration, monitoring, and performance cycling through the application of an electrical potential. The most promising electroactive composites will be assessed for long-term, self-controlled regeneration using representative model water sources. The project will support interdisciplinary graduate student training, education, and outreach. The latter will leverage ongoing activities associated with an NSF National Research Training program at Iowa. Participation in a local STEM conference will engage K-12 students and educators. Modules on sustainable technology development that are targeted for undergraduate engineering students will be developed at both participating institutions. Successful completion of the technical aspect of the work will enable protection of public and ecosystem health.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.

农业径流中的氮和磷危害生态系统，污染饮用水，并对人类健康构成风险。传统的处理技术无法有效去除这些污染物。我们需要新的方法来处理水并回收这些宝贵的营养物质。该项目将开发新型集成多功能材料，具有同时去除氮和磷的双重活性，并具有集成电活性基质以促进养分释放和传感。预计集成材料功能将提高离网农村地区或小型公共供水系统饮用水处理的可靠性和自主性。该项目将使用静电纺丝来制造多功能、电化学活性复合纳米纤维。该纤维将包含双活性位点，季铵强碱性阴离子交换位点可靶向氮，氧化铁可同时靶向磷。静电纺丝工艺将被优化，通过表面活性剂、金属氧化物和聚合物的相互作用，最大限度地提高这些活性位点的表面可用性。将加入电活性基质，通过施加电势来促进材料再生、监测和性能循环。最有前途的电活性复合材料将使用代表性模型水源进行长期、自控再生的评估。该项目将支持跨学科研究生培训、教育和推广。 后者将利用与爱荷华州国家科学基金会国家研究培训计划相关的正在进行的活动。参加当地的 STEM 会议将吸引 K-12 学生和教育工作者的参与。两个参与机构都将开发针对工程本科生的可持续技术开发模块。成功完成技术方面的工作将能够保护公众和生态系统的健康。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。