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

CTS - 9522159罗宾·罗杰斯亚拉巴马大学，塔斯卡卢萨 摘要 拟议的研究的目标是获得一个基本的理解的因素，影响金属离子分配在水两相系统（ABS）。 将使用聚合物/盐和聚合物/聚合物ABS中的金属离子的热力学参数来预测分配值。 将使用聚乙二醇/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。 温度依赖性ABS的研究将集中在聚合物/盐和聚合物/水系统之间的金属离子分配的差异。 这将有助于确定水结构剂在测定金属离子支持的色谱ABS中的作用。 这项研究可能会导致一种有效的分离过程，将取代使用有毒和有害的有机物提取金属离子。 应用包括废物补救、湿法冶金和放射性药物加工。

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.