Separation and Recovery of Ions from Aqueous Media with Redox-Recyclable Metal-Complex Extractions

作者：vjohn at nsf18日期：1998年3月17日下午4:16优先级：正常TO: adthomas主题：摘要-------------------------------消息内容------------------------------- Allison：这是一份资助建议摘要。摘要提案编号：9726143提案类型：研究者发起首席研究员：Steven Strauss所属机构：科罗拉多州立大学该资助通过化学和运输系统部界面、运输和分离项目的分离和纯化项目子项目授予。首席研究员是科罗拉多州立大学的史蒂文·施特劳斯博士。本研究将开发一系列具有氧化还原活性的金属络合萃取剂，用于萃取废水中的目标离子。这项研究的新颖之处在于，所提出的技术可能会产生可回收的萃取剂，以浓缩形式回收污染物，从而最大限度地减少处理量。萃取剂为二茂铁，靶离子为典型的离子型。所提出的封闭循环方案包括污染物离子与二茂铁萃取剂的识别和连接，离子种类的去除和二茂铁的再活化。二茂铁的萃取选择性可以通过化学修饰来改变，PI提出研究一类多齿二茂铁，其中配体可以通过设计化学修饰来靶向特定离子。分子识别化合物的开发对与环境技术相关的分离和提取工艺具有重要意义。开发具有分子识别特性的坚固耐用、可回收的萃取剂对分离技术和污染防治具有重要影响。

Author: vjohn at nsf18 Date: 3/17/98 4:16 PM Priority: Normal TO: adthomas Subject: Abstract ------------------------------- Message Contents ------------------------------- Allison: Here is an abstract for a funding recommendation. Vijay Abstract Proposal No: 9726143 Proposal Type: Investigator Initiated Principal Investigator: Steven Strauss Affiliation: Colorado State University This grant is awarded through the Separations and Purification Program sub-element of the Interfacial, Transport and Separations Program of the Chemical and Transport Systems Division. The principal investigator is Dr. Steven Strauss from Colorado State University. The research will develop a series of redox-active metal-complex extractants to extract target ions from aqueous waste streams. The novelty of the research is the fact that the proposed technology may lead to extractants that are recyclable, with contaminant recovery in concentrated form, thereby minimizing disposal volumes. The extractants are ferrocenes and the target ions are typically ionic species. The closed cycle scheme proposed involves recognition and linking of the contaminant ions to the ferrocene extractant, removal of the ionic species, and reactivation of the ferrocene. The extraction selectivity can be modified through chemical modifications of the ferrocenes, and the PI proposes to study a class of polydentate ferrocenes where the ligands can be chemically modified by design to target specific ions. The development of molecular recognition compounds is of tremendous importance to separation and extraction processes associated with environmental technologies. The development of rugged, recylable extractants wi th molecular recognition characteristics can have a major impact on separations technology and pollution prevention.