Separation of Uptake of Water and Ions in Porous Materials Using Energy Resolved Neutron Imaging

Adrian S. Losko; Luke Daemen; Peter Hosemann; Heinz Nakotte; Anton Tremsin; Sven C. Vogel; Penggang Wang; Folker H. Wittmann

doi:10.1007/s11837-020-04101-y

Separation of Uptake of Water and Ions in Porous Materials Using Energy Resolved Neutron Imaging

Adrian S. Losko, Luke Daemen, Peter Hosemann, Heinz Nakotte, Anton Tremsin, Sven C. Vogel, Penggang Wang, Folker H. Wittmann

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Migration of water and ions dissolved in water through concrete is of interest in civil engineering. In particular, the behavior of radionuclides dissolved in water is of great interest to the nuclear industry because significant numbers of nuclear structures contain large amounts of concrete, acting as a barrier to radionuclides against entering the environment. Study of the migration of water molecules and ions in concrete hitherto required destructive chemical analysis. In this work, we present a non-destructive probe to investigate the uptake of uranium, iodine and water into mortar in situ using a time-of-flight neutron imaging method that allows selecting different neutron energies, providing elemental sensitivity in the analysis of the absorption process. First results indicate that water molecules are the fastest migrating species while iodine is significantly slower, and uranium was not observed to migrate through the structure within the time frame of the experiment and furthermore blocks the migration of water.

Original language	English
Pages (from-to)	3288-3295
Number of pages	8
Journal	JOM
Volume	72
Issue number	9
DOIs	https://doi.org/10.1007/s11837-020-04101-y
State	Published - Sep 1 2020
Externally published	Yes

Funding

This work was supported by the DOE/NE Fuel Cycle R&D research program. This work has benefitted from the use of the Los Alamos Neutron Science Center (LANSCE) at Los Alamos National Laboratory. Los Alamos National Laboratory is operated by Triad National Security, LLC, for the National Nuclear Security Administration of the US Department of Energy under Contract No. 89233218NCA000001. This work was supported by the DOE/NE Fuel Cycle R&D research program. This work has benefitted from the use of the Los Alamos Neutron Science Center (LANSCE) at Los Alamos National Laboratory. Los Alamos National Laboratory is operated by Triad National Security, LLC, for the National Nuclear Security Administration of the US Department of Energy under Contract No. 89233218NCA000001.

Funders	Funder number
US Department of Energy
U.S. Department of Energy	89233218NCA000001
National Nuclear Security Administration
Los Alamos National Laboratory

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10.1007/s11837-020-04101-y

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abstract = "Migration of water and ions dissolved in water through concrete is of interest in civil engineering. In particular, the behavior of radionuclides dissolved in water is of great interest to the nuclear industry because significant numbers of nuclear structures contain large amounts of concrete, acting as a barrier to radionuclides against entering the environment. Study of the migration of water molecules and ions in concrete hitherto required destructive chemical analysis. In this work, we present a non-destructive probe to investigate the uptake of uranium, iodine and water into mortar in situ using a time-of-flight neutron imaging method that allows selecting different neutron energies, providing elemental sensitivity in the analysis of the absorption process. First results indicate that water molecules are the fastest migrating species while iodine is significantly slower, and uranium was not observed to migrate through the structure within the time frame of the experiment and furthermore blocks the migration of water.",

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AU - Losko, Adrian S.

AU - Daemen, Luke

AU - Hosemann, Peter

AU - Nakotte, Heinz

AU - Tremsin, Anton

AU - Vogel, Sven C.

AU - Wang, Penggang

AU - Wittmann, Folker H.

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Separation of Uptake of Water and Ions in Porous Materials Using Energy Resolved Neutron Imaging

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