Responsive Membranes and Advanced Materials for Sensing and Remediation of Halo-organics

项目总结 氯化有机化合物，如多氯联苯(PCBS)和三氯乙烯(TCE，PCE)， 和多氟烷基物质(全氟烷基物质)继续构成补救挑战和人类健康风险。 尽管经过几十年的修复努力，氯和全氟有机化合物仍然是超级污染物。 由于它们的高毒性、持久性和在 环境。目前的许多处理方法(微生物转化、碳吸附等)进行填海工程 受污染的水源是化学密集型、能源密集型和/或需要后处理的，因为 不想要的副产品形成。项目3提出了材料表面的跨学科集成 科学和工程概念，包括响应性聚合物和还原的氧化石墨烯2D膜 使用生物医学中常见方法的科学、纳米结构金属以及营养和食品科学 研究领域开发更有效的有机解毒方法。纳米铁的发展-- 基材技术为环境修复领域带来了重要的、极具发展前景的技术。在……里面 近年来，零价纳米金属(特别是双金属)粒子在 地下水对氯化溶剂的修复。我们的首要目标是在 坚固的聚合物中空纤维和用于还原和氧化的2D石墨烯基膜 用于全氟辛烷磺酸和多氯联苯吸附/解吸的降解和温度响应型聚合物。两个具体目标 目标是：1)创建坚固的聚合物/凝胶和基于2-D材料的(还原氧化石墨烯和复合材料) 提高TCE、PCE、PCB降解效率的金属催化功能化膜和材料 并减少材料使用量，并示范使用催化膜滤池为两种现场基础 应用，(2)利用超高吸附浓缩和再生全氟辛烷磺酸和多氯联苯单体化合物 容量温度响应性水凝胶/膜或通过AMF(交流磁)进行局部加热 领域)，使用磁铁矿纳米颗粒，并为PFAS创造功能化的智能吸附过滤器和传感器 使用真实世界的水样进行解毒应用。这些目标中的每一个都具有非常重要的意义 材料科学在坚固膜领域的受限活性纳米金属方面的进展， 以及通过创建响应材料来实现新型变温吸附/解吸。应用程序 我们的技术将包括与罗克韦尔国际公司在肯塔基州拉塞尔维尔的合作 位于肯塔基州路易斯维尔的多氯联苯和ATKEMIX Ten站点，用于TCE、PCE、氯仿和四氯化碳 混合物，在肯塔基州东部确定的用于PFAS吸附应用的水务设施，以及Arcadis公司 参与补救活动。

PROJECT SUMMARY Chlorinated organic compounds such as polychlorinated biphenyls (PCBs) and trichloroethylene (TCE, PCE), and polyfluoroalkyl substances (PFAS) continue to pose both remediation challenges and human health risks. Despite decades of remediation effort, chloro- and perfluoro-organic compounds remain Superfund pollutants of national health concern due to their high toxicity, persistence and varied sources of distribution in the environment. Many current treatments (microbial transformation, carbon adsorption, etc.) for the reclamation of contaminated water sources are chemical-intensive, energy-intensive, and/or require post-treatment due to unwanted by-product formation. Project 3 proposes trans-disciplinary integration of the materials surface science and engineering concepts including responsive polymer and reduced graphene oxide 2D membrane science, nanostructured metals, and nutrition and food science using approaches common in the biomedical research field to develop more efficient methods of organic detoxification. The development of nanosized iron- based materials has brought important and promising techniques into the field of environmental remediation. In recent years, zero-valent nanoscale metal (especially bimetallic) particles have attracted growing attention in groundwater remediation of chlorinated solvents. Our overarching goals are to create catalytic domains in robust polymer hollow fibers and in 2D graphene-based membranes for both reductive and oxidative degradation and temperature-responsive polymers for PFAS and PCB sorption/ desorption. Two specific aims are to: 1) to create robust polymeric/gel and 2-D material-based (reduced graphene oxide and composites) metal catalyzed functionalized membranes and materials to enhance TCE, PCE, PCB degradation efficiency and reduce material usage, and demonstration of the use of catalytic membrane filters for two site-based applications, (2) to concentrate and regenerate PFAS and PCB individual compounds using ultra high sorption capacity temperature responsive hydrogel/membranes or localized heating through AMF (alternating magnetic field) using magnetite nanoparticles, and to create functionalized smart adsorptive filters and sensors for PFAS detoxification applications with real-world water samples. Each of these objectives represent highly significant material science advancement in terms of confined reactive nanosized metals in robust membrane domain, and novel temperature swing adsorption/desorption through creation of responsive materials. The applications of our technologies will include collaborations with Rockwell International Site in Russellville, Kentucky for PCBs and the ATKEMIX TEN Site in Louisville, Kentucky for TCE, PCE, chloroform, and carbon tetrachloride mixture, identified water utilities in Eastern Kentucky for PFAS sorption application, and Arcadis Corporation involved with remediation activities.