Quaternary Effects in Solute Transport Through Swollen Clay Films in Complex Media Studied by Clay Modified Electrodes and X-ray Diffraction

通过粘土改性电极和 X 射线衍射研究复杂介质中溶质通过膨胀粘土膜传输的四元效应

• 批准号: 9315396
• 负责人: Alanah Fitch
• 金额: $ 25.4万
• 依托单位: Loyola University of Chicago
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-12-15 至 1998-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9315396&HistoricalAwards=false
• 关键词: Quaternary; Effects; Solute; Transport; Through

9315396 Fitch This project is in the general area of analytical and surface chemistry and focuses on the electrochemical investigation of the transport properties of clays. During the tenure of this three year continuing grant, Professor Alanah Fitch and her students at Loyola University of Chicago will use clay-modified electrodes to investigate the diffusion of ions through well characterized clay layers. The effects of pressure and electrolyte concentration on the swelling and transport properties of the clay materials will be examined. Also, the influence of multiple solutes on these properties will be explored to determine the extent of cooperative or synergistic transport. This experimental investigation is designed to further our understanding of the soil-based transport of typical pollutants, including both hydrophobic organic materials and anionic radiochemicals, through clay containment beds. %%% This research is expected to provide an enhanced understanding of several important processes which take place within the clay materials that are used to line chemical waste disposal repositories. Among the issues to be explored are the effects of various toxic chemicals on the characteristics of these clay materials, including their swelling and transport properties. The successful pursuit of the goals of this project should enable more accurate prediction of the rates of escape of pollutants from containment sites. ***

9315396惠誉这个项目是在分析和表面化学的一般领域，并侧重于电化学调查的运输性质的粘土。 在为期三年的持续资助期间，芝加哥洛约拉大学的Alanah Fitch教授和她的学生将使用粘土修饰电极来研究离子通过特征良好的粘土层的扩散。 研究了压力和电解质浓度对粘土材料的溶胀和输运性质的影响。 此外，将探讨多种溶质对这些属性的影响，以确定合作或协同运输的程度。 这项实验调查的目的是进一步了解典型的污染物，包括疏水性有机材料和阴离子放射性化学物质，通过粘土遏制床的土壤为基础的运输。 这项研究预计将提供一个更好的了解几个重要的过程中发生的粘土材料，用于内衬化学废物处置库。 其中要探讨的问题是各种有毒化学品对这些粘土材料特性的影响，包括它们的膨胀和运输特性。 成功地实现这一项目的目标应能更准确地预测污染物从封隔场所的逃逸率。 ***