Bibliographic Details
| Title: |
Rapid determination of the migration parameters of nuclides in intact granite rock under the action of electric field |
| Authors: |
Xinyu Wang, Xiaojie Li, Yongmei Li, Longcheng Liu, Shuo Meng, Chunguang Li, Zhenzhong Liu, Xiaodong Li, Kaixuan Tan |
| Source: |
Nuclear Engineering and Technology, Vol 57, Iss 1, Pp 103131- (2025) |
| Publisher Information: |
Elsevier, 2025. |
| Publication Year: |
2025 |
| Collection: |
LCC:Nuclear engineering. Atomic power |
| Subject Terms: |
Electromigration, Intact granitic rock, Iodine, Rhenium, First-order adsorption kinetics, Advection-dispersion model, Nuclear engineering. Atomic power, TK9001-9401 |
| More Details: |
Deep geologic disposal has been widely accepted as a strategy for long-term disposal of the high-level radioactive waste. It is principal to obtain the migration parameters of radionuclides in natural barrier, such as granite, of a high-level radioactive waste repository for safety assessment of the repository. To quickly determine the diffusion and sorption properties of nuclides in intact granite, two tracers, I− and ReO4−, were tested with a modified electromigration device, by imposing a constant voltage over an intact Beishan granitic rock sample. The breakthrough curves of I− and ReO4− were obtained under condition of five different voltages. To interpret the electromigration experimental results with more confidence, an advection-dispersion model based on first-order adsorption kinetics was developed in this study. Data analysis of the breakthrough curves by this model suggest that the effective diffusion coefficients of I− and ReO4− in intact Beishan granodiorite rock are (6.81 ± 0.53) × 10−13 m2/s and (6.45 ± 0.07) × 10−13 m2/s, respectively. While the distribution coefficient of the two ions are (9.06 ± 1.13) × 10−7 m3/kg and (9.81 ± 0.13) × 10−7 m3/kg, respectively. This indicates that I− and ReO4− hardly adsorb in Beishan granodiorite rock. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
1738-5733 |
| Relation: |
http://www.sciencedirect.com/science/article/pii/S1738573324003784; https://doaj.org/toc/1738-5733 |
| DOI: |
10.1016/j.net.2024.07.062 |
| Access URL: |
https://doaj.org/article/a422a00e731d4446bd65f7fb13ddbe67 |
| Accession Number: |
edsdoj.422a00e731d4446bd65f7fb13ddbe67 |
| Database: |
Directory of Open Access Journals |
