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

作者：vjohn at nsf18日期：3/17/98 4：16 PM优先级：正常至：Adthoma主题：摘要维杰摘要建议书编号：9726143建议书类型：调查员发起的首席调查员：史蒂文·施特劳斯隶属关系：科罗拉多州立大学这笔赠款是通过化学和运输系统司界面、运输和分离计划的分离和纯化计划子要素授予的。首席研究员是科罗拉多州立大学的史蒂文·施特劳斯博士。这项研究将开发一系列氧化还原活性金属络合物萃取剂，从含水废水中提取目标离子。这项研究的新颖性在于，拟议的技术可能会产生可回收的萃取剂，污染物以集中形式回收，从而将处理量降至最低。萃取剂是二茂铁，目标离子是典型的离子物种。建议的闭合循环方案包括识别污染离子并将其连接到二茂铁萃取剂，去除离子物种，以及重新激活二茂铁。萃取选择性可以通过对二茂铁进行化学修饰来改变，PI建议研究一类多齿二茂铁，其中配体可以通过设计来针对特定离子进行化学修饰。分子识别化合物的发展对与环境技术相关的分离和提取过程具有极其重要的意义。具有分子识别特性的坚固、可再结晶萃取剂的开发将对分离技术和污染防治产生重大影响。

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.