CAREER: Catalytic Hollow-Fiber Membranes as an Efficient and Scalable Process in Water Treatment

职业：催化中空纤维膜作为水处理中的一种高效且可扩展的工艺

• 批准号: 1847466
• 负责人: Kyle Doudrick
• 金额: $ 50万
• 依托单位: University of Notre Dame
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-07-01 至 2024-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1847466&HistoricalAwards=false
• 关键词: CAREER; Catalytic; Hollow; Fiber; Membranes

The use of industrial chemicals has increased dramatically over the past century. This has led to widespread contamination of water supplies. Several contaminants cannot be removed using common water-treatment technologies, potentially impacting human health. To address this problem, the investigator will develop a highly innovative water treatment system that uses nanotechnology-based catalysts. These catalysts increase the rate of a chemical reaction to efficiently clean water in a cost-effective way. Results from this research may lead to a transformative technology for low cost water treatment. The researchers will create virtual reality tours of water treatment facilities in college courses that can be accessed by the public to promote a better understanding of how environmental engineers protect human health.The objective of this research is to develop nano-enabled catalysts to solve fundamental and applied water quality problems. Heterogeneous hydrogenation catalysts (HHCs) are a promising treatment option for numerous environmentally-persistent contaminants such as halogenated and oxygenated organic compounds. Recent advancements in nanotechnology make HHCs more feasible as a water treatment technology, with the achievement of higher reaction rates and better reaction selectivity for innocuous by-products. However, challenges remain due to catalyst cost and mass transport limitations. This research will investigate the kinetic mechanisms, stability, and scalability of a new HHC reactor - the catalytic hydrogel membrane (CHM) reactor. The CHM consists of a gas-permeable hollow-fiber membrane coated with hydrogel-containing catalyst nanoparticles. Using a suite of advanced electrochemical and spectroscopy tools, the specific tasks of this research are to: i) quantify bulk reaction and film diffusion rates in model and real water systems; ii) identify the mechanisms of catalyst deactivation; iii) quantify the mechanical properties of the hydrogel support; iv) model the performance of a scaled-up, continuous-flow CHM reactor; and v) investigate the applicability of CHM for emerging drinking water contaminants. Complimentary to these research objectives are the investigator?s educational goals to enhance graduate training through research, improve undergraduate education using virtual reality (VR) modules, increase underrepresented group participation in engineering, and use outreach to excite and educate the public about water quality. To enhance undergraduate education and provide outreach opportunities for all ages, the investigator will develop and use VR tours of water treatment facilities. This CAREER program will have far-reaching science, education, and societal impacts, and it directly address the National Academy of Engineering Grand Challenge of providing access to clean water.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.

在过去的一个世纪里，工业化学品的使用急剧增加。这导致了广泛的水供应污染。一些污染物无法使用普通的水处理技术去除，这可能会影响人类健康。为了解决这个问题，研究人员将开发一种使用纳米技术催化剂的高度创新的水处理系统。这些催化剂以一种经济高效的方式提高了化学反应的速度，从而有效地清洁了水。这项研究的结果可能会带来一种低成本水处理的变革性技术。研究人员将在大学课程中创建水处理设施的虚拟现实之旅，公众可以访问这些设施，以促进更好地了解环境工程师如何保护人类健康。这项研究的目标是开发纳米催化剂，以解决基本和实用的水质问题。多相加氢催化剂(HHC)是一种很有前途的处理卤代和含氧有机化合物等环境持久性污染物的选择。纳米技术的最新进展使HHCs作为水处理技术变得更加可行，实现了更高的反应速率和更好的无毒副产物的反应选择性。然而，由于催化剂成本和质量运输的限制，挑战依然存在。本研究将探讨一种新型HHC反应器--催化水凝胶膜(CHM)反应器的动力学机理、稳定性和可扩展性。CHM由一层透气的中空纤维膜组成，膜上覆盖着含有水凝胶的催化剂纳米颗粒。使用一套先进的电化学和光谱工具，这项研究的具体任务是：i)量化模型和真实水系统中的整体反应和膜扩散速率；ii)确定催化剂失活的机制；iii)量化水凝胶载体的机械性能；iv)模拟放大的连续流动CHM反应器的性能；以及v)研究CHM对新出现的饮用水污染物的适用性。与这些研究目标相辅相成的是研究人员S的教育目标，即通过研究加强研究生培训，使用虚拟现实(VR)模块改善本科教育，增加未被充分代表的群体对工程的参与，并通过外联活动来激励和教育公众有关水质的知识。为了加强本科教育并为所有年龄段的人提供外展机会，调查员将开发和使用水处理设施的虚拟现实参观。这一职业计划将具有深远的科学、教育和社会影响，它直接解决了国家工程院在提供清洁水方面的重大挑战。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

A computational model for the catalytic hydrogel membrane reactor

催化水凝胶膜反应器的计算模型

• DOI: 10.1016/j.watres.2020.116199
• 发表时间: 2020
• 期刊: Water Research
• 影响因子: 12.8
• 作者: Zak, Nicholas;Marks, Randal;Perez-Calleja, Patricia;Nerenberg, Robert;Doudrick, Kyle
• 通讯作者: Doudrick, Kyle