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

0 * 0 * 1 * * * * * * 468 * 2670 * * 22 * 6 * 3132 * 14.0 * * * * *** * 正常* 0 * * * * * 假*假*假* * en - us *是* X-NONE * * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * **** /* 样式定义* / *表。MsoNormalTable* {mso-style-name:"Table Normal"；* mso-tstyle-rowband-size: 0;* mso-tstyle-colband-size: 0;* mso-style-noshow:是的;* mso-style-priority: 99;* mso-style-parent:“”;* font - family：宋体；* mso-para-margin: 0;* mso-para-margin-bottom: .0001pt;* mso-pagination: widow-orphan;*字体大小:12.0分;*字体类型:威尔士;* mso-ascii-font-family:威尔士;* mso-ascii-theme-font: minor-latin;* mso-hansi-font-family:威尔士;* mso-hansi-theme-font: minor-latin;****越来越多的对人类健康和环境有影响的顽固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，新出现的顽固性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净水技术，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侵略性氧化或还原性降解。这是可以实现与电*或催化增强氧化和还原。***我的研究*寻求通过*在膜科学的新前沿-活性膜的领先进展来解决处理受污染水的日益增长的挑战。我之前的研究产生了导电聚合物纳米复合膜，能够进行高效和有效的水溶质分离，同时也显示出高导电性。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)这些新型导电膜电催化降解水溶液中模型有机污染物的能力。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，交变外加电位将通过防止表面污染和减少表面浓度极化来增强水在膜上的通量。2)利用催化纳米颗粒接枝到导电膜表面，开发先进的表面修饰。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水挑战这些电催化活性膜。真实的水中含有多种有机化合物，包括细菌，我们将研究这些具有催化活性的膜抵抗生物污染的能力，同时降解难降解的污染物。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水域和废水的质量，从而改善加拿大人的健康，保护我们的环境

**** * 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