Electro-Functional Membranes: New Materials for Selective Separations and Catalytic Degradations of Aqueous Environmental Contaminants

电功能膜：用于水环境污染物选择性分离和催化降解的新材料

• 批准号: RGPIN-2016-06342
• 负责人: deLannoy, CharlesFrançois
• 金额: $ 1.82万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=648833
• 关键词: Electro; Functional; Membranes; New; Materials

**** * 0* 0* 1* 468* 2670* a* 22* 6* 3132* 14.0* * * * *** * Normal* 0* * * * * false* false* false* * EN-US* JA* X-NONE* * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * **** /* Style Definitions */*table.MsoNormalTable* {mso-style-name:"Table Normal";* mso-tstyle-rowband-size:0;* mso-tstyle-colband-size:0;* mso-style-noshow:yes;* mso-style-priority:99;* mso-style-parent:"";* mso-padding-alt:0in 5.4pt 0in 5.4pt;* mso-para-margin:0in;* mso-para-margin-bottom:.0001pt;* mso-pagination:widow-orphan;* font-size:12.0pt;* font-family:Cambria;* mso-ascii-font-family:Cambria;* mso-ascii-theme-font:minor-latin;* mso-hansi-font-family:Cambria;* mso-hansi-theme-font:minor-latin;}****A growing*number of recalcitrant pollutants of human health and environmental concern are*entering Canadian and global water and wastewater systems at alarming rates.*While conventional water and wastewater treatment technologies are effective at providing clean, usable water, these methods are*insufficient to remove emerging aquatic contaminants. Unlike naturally*occurring organic aquatic contaminants, emerging recalcitrant contaminants must*not only be removed from aqueous systems, but also degraded. Membrane separation is currently the most effective technology for*purifying water, but conventional membranes lack mechanisms for contaminant*degradation. Many environmental contaminants are highly susceptible to*aggressive oxidative or reductive degradation. This is achievable with electro-*or catalytically-enhanced oxidation and reduction.***My research*seeks to address the increasing challenges of treating contaminated waters by*leading advancements in a new frontier in membrane science – active membranes. My*previous research produced electrically conductive polymer nanocomposite*membranes able to perform efficient and effective aqueous solute separations, while also demonstrating high*electrical conductivity. I propose to build on this success and create active membranes able to both*separate and catalytically degrade emerging pollutants. ***My research*will focus on three areas of advancement: 1) the ability of these novel*electrically conductive membranes to electro-catalytically degrade model*organic contaminants in aqueous solutions. The ability of*these membranes to reductively degrade model aromatic compounds will also be*tested, and their reductive transformation by-products will be tracked. It is hypothesized*that an alternating applied electric potential will enhance the flux*of water across the membrane by preventing surface fouling and reducing surface*concentration polarization. 2) Developing advanced surface modifications using*catalytic nanoparticles grafted to the electrically conductive membrane*surfaces. These grafted catalytic nanoparticles will be able to oxidize organic*contaminants, while the electrically conductive membranes will enhance the*degradation efficacy of these catalysts. 3) Challenging these*electro-catalytically active membranes with real waters containing contaminants*of human health and environmental concern. Real waters contain a variety of*organic compounds, including bacteria, and we will study*the ability of these catalytically active membranes to resist biofouling while degrading recalcitrant contaminants. ***The study and development of such membranes will push the boundaries of membrane*research and their use will improve the quality of Canadian waters and*wastewater, thereby improving the health of Canadians, protecting our*enviro

* 0* 0* 1* 468* 2670* a* 22* 6* 3132* 14.0* 正常 * 0 * 假 * 假 * EN-US* JA* X-NONE* * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** /* 样式定义 */*table.MsoNormalTable* {mso-style-name：“Table Normal”;* mso-tstyle-rowband-size：0;* mso-tstyle-colband-size：0;* mso-style-noshow：yes;* mso-style-priority：99;* mso-style-parent：“";* mso-padding-alt：0in 5.4pt 0in 5.4pt;* mso-para-margin-bottom：0in;* mso-para-margin-bottom：.0001pt;* mso-pagination：widow-orphan;* font-size：12.0pt;* font-family：Cambria;* mso-assign-font-family：Cambria;* mso-assign-theme-font：minor-latin;* mso-hansi-font-family：坎布里亚;* mso-hansi-theme-font：minor-latin;}***** 越来越多 * 危害人类健康和环境的有害污染物 * 正以惊人的速度进入加拿大和全球的水和废水系统。*虽然传统的水和废水处理技术在提供清洁、可用的水方面是有效的，但这些方法不足以去除新出现的水生污染物。与自然发生的有机水生污染物不同，新出现的柠檬酸盐污染物不仅必须从水系统中去除，而且必须降解。膜分离是目前最有效的水净化技术，但传统的膜缺乏污染物降解机制。许多环境污染物极易受到氧化或还原降解的影响。这可以通过电 * 或催化增强的氧化和还原来实现。我的研究 * 旨在通过 * 引领膜科学新前沿--活性膜的进步来解决处理污染沃茨的日益增加的挑战。我以前的研究生产了导电聚合物纳米复合膜，能够进行高效和有效的水溶液溶质分离，同时也表现出高电导率。我建议在这一成功的基础上，创造出既能分离又能催化降解新出现的污染物的活性膜。* 我的研究 * 将集中在三个领域的进步：1）这些新的 * 导电膜的能力，以电催化降解模型 * 有机污染物在水溶液中。这些膜还原降解模型芳香族化合物的能力也将被测试，它们的还原转化副产物将被跟踪。据推测，施加的交变电势将通过防止表面污染和减少表面浓差极化来提高水穿过膜的通量。2)开发先进的表面改性技术，使用 * 催化纳米粒子接枝到导电膜 * 表面。这些接枝的催化纳米颗粒将能够氧化有机污染物，而导电膜将提高这些催化剂的降解效率。3)用含有人类健康和环境问题污染物 * 的真实的沃茨水挑战这些 * 电催化活性膜。真实的沃茨含有各种 * 有机化合物，包括细菌，我们将研究 * 这些催化活性膜在降解柠檬酸盐污染物的同时抵抗生物污垢的能力。* 这种膜的研究和开发将推动膜研究的界限，它们的使用将改善加拿大沃茨和废水的质量，从而改善加拿大人的健康，保护我们的环境。