Investigation of Aqueous Biphasic Systems for the Selective Liquid/Liquid and Column Chromatographic Separation and Recovery of Metal Ions

CTS-9522159罗宾·罗杰斯大学塔斯卡卢萨分校摘要本研究的目的是从根本上了解双水相体系中影响金属离子分配的因素。金属离子在聚合物/盐和聚合物/聚合物ABS中的热力学参数将用于预测分配值。利用聚乙二醇/聚丙二醇共聚物研究聚合物疏水性对金属离子分布的影响。聚合物/盐和聚合物/水体系在金属离子分配方面的差异将成为ABS研究的重点。这将有助于确定水结构剂在测定金属离子支撑的色谱ABS中的作用，并进行比较。这项研究可能会导致一种有效的分离过程，取代使用有毒和危险的有机物来提取金属离子。应用包括废物修复、湿法冶金和放射性药品加工。

CTS - 9522159 Robin Rogers University of Alabama, Tuscaloosa ABSTRACT The goal of the proposed research is to obtain a fundamental understanding of the factors that affect metal ion partitioning in aqueous biphasic systems (ABS). Thermodynamic parameters for metal ions in polymer/salt and polymer/polymer ABS will be used to predict partitioning values. The effects of polymer hydrophobicity on metal ion distribution will be studied using polyethylene glycol/polypropylene glycol copolymers. The investigation of temperature dependent ABS will focus on the differences in metal ion partitioning between polymer/salt and polymer/water systems. This will help to define the role of water-structuring agents in determining metal ion supported chromatographic ABS will be compared. The research may lead to an efficient separation process that will replace the use of toxic and hazardous organics for extracting metal ions. Applications include waste remediation, hydrometallurgy and processing of radiopharmaceuticals.