Transport of Colloids in Ground Water: A Chemical-ColloidalApproach

该奖项旨在支持有关溶液化学、固-溶液界面的化学特性以及与多孔介质的胶体相互作用对地下水中胶体迁移的作用的研究。该项目的目标是为这些现象建立一个理论框架，然后进行实验室实验，以评估影响多孔介质含水层中胶体运动的化学因素。在建立传输模型时，计划采用的方法是将传质的基本理论、考虑多孔介质中胶体的流体动力学、胶体相互作用和稳定性结合起来。导致这一奖项的提案是根据NSF计划公告：研究启动奖，NSF 88-99提交的。这些结果有望为描述悬浮在水中的胶体颗粒在穿过地下水含水层等多孔介质或水处理系统中的过滤过程时的命运提供科学基础。除了作为污染物的作用外，胶体颗粒还可以作为传播细菌和病毒的媒介。这项研究的结果也可应用于将含水层与危险废物处置场渗漏的潜在污染隔离的系统的工程设计。

This is an award to support research on the role of solution chemistry, chemical characteristics of the solid- solution interface and colloidal interactions with porous media on the transport of colloids in groundwater. Objectives of this project are to develop a theoretical framework for these phenomena and then to conduct laboratory experiments to evaluate the chemical factors that affect movement of colloids in porous media aquifers. The approach planned in developing the transport model will be to combine fundamental theories of mass transfer, consideration of the hydrodynamics of colloids in porous media, colloidal interaction and stability. The proposal leading to this award was submitted in accord with the NSF Program Announcement: Research Initiation Awards, NSF 88-99. Results are expected to provide a scientific base for characterizing the fate of colloidal particles that are suspended in water as they move through a porous medium such as a groundwater aquifer or a filtration process in a water treatment system. In addition to their role as pollutants, colloidal particles can serve as the vehicle for transport of bacteria and viruses. Results of this research may also be applied to engineering design of systems to isolate aquifers from potential contamination by seepage from hazardous waste disposal sites.