Mechanistic Relationships for Physical Nonequilibrium Phenomena in Vadose Zone Transport

9309050 Mayer这是一个支持研究的奖项，其目的是制定和验证地下水中污染物的物理不平衡运动的机制关系，作为在地下水位以上的非饱和区发生流动的介质的物理性质的函数。该项目涉及四种不同多孔介质的实验，这些介质来自于密歇根州Keweenaw半岛的硅砂，这些硅砂含有很少或没有有机物，并且几乎没有微孔隙。砂将根据粒度分成四个部分，以获得必要的孔隙尺寸变化特征，以验证流动的数学模型。该提案是根据NSF 92-122“研究启动奖励计划公告和指南”提交的。研究结果有望提高对不饱和区溶质迁移的预测能力。这反过来又有望提高预测地下水污染物和污染物的运动特性的能力，这些污染物可能用于修复受池塘、地表和地下储罐和垃圾填埋场渗漏污染的地下水的工程设计。

9309050 Mayer This is an award to support research, the objective of which is to formulate and validate mechanistic relationships for physical nonequilibrium movement of contaminants in groundwater as a function of the physical properties of the media through which flow occurs in the unsaturated zone above the water table. The project involves experiments with four different porous media derived from a silica sand obtained from Michigan's Keweenaw peninsula containing little or no organic matter and exhibiting little or no micro-porosity. The sand will be separated into four fractions based on particle sizing to obtain the requisite variations in pore-size characteristics necessary to validate the mathematical models of flow. The proposal leading to this award was submitted in response to NSF 92-122, Research Initiation Awards Program Announcement and Guidelines. Results are expected to improve the predictive capabilities for transport of solutes in the unsaturated zone. This in turn is expected to provide improvement in the ability to predict the movement characteristics of groundwater pollutants and contaminants for potential use in engineering design of remediation systems for groundwater polluted by seepage from ponds, surface and subsurface storage tanks and landfills.