TY - GEN
T1 - Studying contaminant transport and chem ical reduction in subsurface sediment by modeling flow in porous media
AU - Boutchko, Rostyslav
AU - Rayz, Vitaliy
AU - O'neil, James
AU - Vandehey, Nicholas T.
AU - Nico, Peter S.
AU - Druhan, Jennifer
AU - Budinger, Thomas F.
AU - Saloner, David
AU - Gullberg, Grant T.
AU - Moses, William W.
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
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U2 - 10.1109/NSSMIC.2010.5874309
DO - 10.1109/NSSMIC.2010.5874309
M3 - Conference contribution
AN - SCOPUS:79960296979
SN - 9781424491063
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 2826
EP - 2830
BT - IEEE Nuclear Science Symposuim and Medical Imaging Conference, NSS/MIC 2010
T2 - 2010 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
Y2 - 30 October 2010 through 6 November 2010
ER -