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

Rostyslav Boutchko, Vitaliy Rayz, James O'neil, Nicholas T. Vandehey, Peter S. Nico, Jennifer Druhan, Thomas F. Budinger, David Saloner, Grant T. Gullberg, William W. Moses

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publicationIEEE Nuclear Science Symposuim and Medical Imaging Conference, NSS/MIC 2010
Pages2826-2830
Number of pages5
DOIs
StatePublished - Dec 1 2010
Externally publishedYes
Event2010 IEEE Nuclear Science Symposium, Medical Imaging Conference, NSS/MIC 2010 and 17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors, RTSD 2010 - Knoxville, TN, United States
Duration: Oct 30 2010Nov 6 2010

Publication series

NameIEEE Nuclear Science Symposium Conference Record
ISSN (Print)1095-7863

Other

Other2010 IEEE Nuclear Science Symposium, Medical Imaging Conference, NSS/MIC 2010 and 17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors, RTSD 2010
Country/TerritoryUnited States
CityKnoxville, TN
Period10/30/1011/6/10

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

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