Studying contaminant transport and chem ical reduction in subsurface sediment by modeling flow in porous media

被引：0

作者：

Boutchko, Rostyslav ^{[1
]}

Rayz, Vitaliy ^{[1
]}

O'Neil, James ^{[1
]}

Vandehey, Nicholas T. ^{[1
]}

Nico, Peter S. ^{[1
]}

Druhan, Jennifer ^{[1
]}

Budinger, Thomas F. ^{[1
]}

Saloner, David ^{[1
]}

Gullberg, Grant T. ^{[1
]}

Moses, William W. ^{[1
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, 1 Cyclotron Rd,MS55R0121, Berkeley, CA 94720 USA

来源：

2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC) | 2010年

基金：

美国国家卫生研究院;

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents imaging and modeling aspects of an interdisciplinary study of subsurface pollution and environmental remediation. F18 -FDG PET and Tc99m - NaTcO4 SPECT studie s were performed to follow dynamic changes in the radiotracer distribution in model systems. Radioisotope solution was pumped through the test columns filled with sand or sediment in order to reproduce subsurface conditions of groundwater flow through satu rated sediment layers. Dynamic sequences of the radiotracer distribution were acquired and analyzed. The ultimate goal was to measure porosity and parameters of the sediment and, in the future, to study radiotracer immobilization in the column through reductive precipitation. In order to extract the relevant information from the dynamic images, computational fluid dynamics model of the liquid flow in porous medium were designed and implemented. Qualitative similarities between the imaged and simulated radio tracer distributions were achieved with appropriate values of the computational mesh, the local medium permeability, and other model parameters.

引用

页码：2826 / 2830

页数：5

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