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

**Vertical distribution of H14CO_3 transport parameters in Boom Clay in the Mol-1 borehole (Mol, Belgium).** / Aertsens, Marc; Van Gompel, Marc; De Cannière, Pierre; Maes, Norbert; Dierckx, A.

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

Aertsens, M, Van Gompel, M, De Cannière, P, Maes, N & Dierckx, A 2008, 'Vertical distribution of H14CO_3 transport parameters in Boom Clay in the Mol-1 borehole (Mol, Belgium)', *Physics and Chemistry of the Earth*, vol. 33, Supplement 1, pp. S61-S66. https://doi.org/10.1016/j.pce.2008.10.060

Aertsens, M., Van Gompel, M., De Cannière, P., Maes, N., & Dierckx, A. (2008). Vertical distribution of H14CO_3 transport parameters in Boom Clay in the Mol-1 borehole (Mol, Belgium). *Physics and Chemistry of the Earth*, *33, Supplement 1*, S61-S66. https://doi.org/10.1016/j.pce.2008.10.060

Aertsens M, Van Gompel M, De Cannière P, Maes N, Dierckx A. Vertical distribution of H14CO_3 transport parameters in Boom Clay in the Mol-1 borehole (Mol, Belgium). Physics and Chemistry of the Earth. 2008 Oct;33, Supplement 1:S61-S66. https://doi.org/10.1016/j.pce.2008.10.060

@article{8e0c0e02320c4c079b43934152940360,

title = "Vertical distribution of H14CO_3 transport parameters in Boom Clay in the Mol-1 borehole (Mol, Belgium)",

abstract = "An important question for the performance assessment of a potential geological waste disposal site for radioactive waste in Boom Clay is: can the Boom Clay be considered as a homogeneous clay layer from the point of view of its migration properties? Therefore, the hydraulic conductivity and the transport parameters of tritiated water (HTO) and two critical radionuclides (129I- and H14CO3-) in Boom Clay and the upper lying sands of Eigenbilzen or Voort have been determined on cores taken from different depths in the Mol-1 borehole. In the range from 191 m to 281 m depth, the Boom Clay Formation can be considered as homogeneous with respect to the hydraulic conductivity and the transport parameters of H14CO3-. The value of the vertical hydraulic conductivity is around 2.5 - 3 10-12 m/s. The average apparent diffusion coefficient Dapp of H14CO3- in the direction perpendicular to the bedding plane is (6 3) 10-11 m2/s. The product R of the diffusion accessible porosity and the retardation factor R of H14CO3- is 0.26 0.03, lying between the value of iodide (R = 0.16) and of HTO (R = 0.37). Due to anion exclusion, iodide has a lower porosity than HTO.",

keywords = "bicarbonate, diffusion accessible porosity, apparent diffusion coefficient, dispersion coefficient, boom clay, hydrualic conductivity",

author = "Marc Aertsens and {Van Gompel}, Marc and {De Canni{\`e}re}, Pierre and Norbert Maes and A. Dierckx",

note = "Score = 10; Clays in natural and engineered barriers for radioactive waste confinement ; Conference date: 17-09-2007 Through 20-09-2007",

year = "2008",

month = oct,

doi = "10.1016/j.pce.2008.10.060",

language = "English",

volume = "33, Supplement 1",

pages = "S61--S66",

journal = "Physics and Chemistry of the Earth",

issn = "1474-7065",

publisher = "Elsevier",

}

TY - JOUR

T1 - Vertical distribution of H14CO_3 transport parameters in Boom Clay in the Mol-1 borehole (Mol, Belgium)

AU - Aertsens, Marc

AU - Van Gompel, Marc

AU - De Cannière, Pierre

AU - Maes, Norbert

AU - Dierckx, A.

N1 - Score = 10

PY - 2008/10

Y1 - 2008/10

N2 - An important question for the performance assessment of a potential geological waste disposal site for radioactive waste in Boom Clay is: can the Boom Clay be considered as a homogeneous clay layer from the point of view of its migration properties? Therefore, the hydraulic conductivity and the transport parameters of tritiated water (HTO) and two critical radionuclides (129I- and H14CO3-) in Boom Clay and the upper lying sands of Eigenbilzen or Voort have been determined on cores taken from different depths in the Mol-1 borehole. In the range from 191 m to 281 m depth, the Boom Clay Formation can be considered as homogeneous with respect to the hydraulic conductivity and the transport parameters of H14CO3-. The value of the vertical hydraulic conductivity is around 2.5 - 3 10-12 m/s. The average apparent diffusion coefficient Dapp of H14CO3- in the direction perpendicular to the bedding plane is (6 3) 10-11 m2/s. The product R of the diffusion accessible porosity and the retardation factor R of H14CO3- is 0.26 0.03, lying between the value of iodide (R = 0.16) and of HTO (R = 0.37). Due to anion exclusion, iodide has a lower porosity than HTO.

AB - An important question for the performance assessment of a potential geological waste disposal site for radioactive waste in Boom Clay is: can the Boom Clay be considered as a homogeneous clay layer from the point of view of its migration properties? Therefore, the hydraulic conductivity and the transport parameters of tritiated water (HTO) and two critical radionuclides (129I- and H14CO3-) in Boom Clay and the upper lying sands of Eigenbilzen or Voort have been determined on cores taken from different depths in the Mol-1 borehole. In the range from 191 m to 281 m depth, the Boom Clay Formation can be considered as homogeneous with respect to the hydraulic conductivity and the transport parameters of H14CO3-. The value of the vertical hydraulic conductivity is around 2.5 - 3 10-12 m/s. The average apparent diffusion coefficient Dapp of H14CO3- in the direction perpendicular to the bedding plane is (6 3) 10-11 m2/s. The product R of the diffusion accessible porosity and the retardation factor R of H14CO3- is 0.26 0.03, lying between the value of iodide (R = 0.16) and of HTO (R = 0.37). Due to anion exclusion, iodide has a lower porosity than HTO.

KW - bicarbonate

KW - diffusion accessible porosity

KW - apparent diffusion coefficient

KW - dispersion coefficient

KW - boom clay

KW - hydrualic conductivity

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_94897

UR - http://knowledgecentre.sckcen.be/so2/bibref/5594

U2 - 10.1016/j.pce.2008.10.060

DO - 10.1016/j.pce.2008.10.060

M3 - Article

VL - 33, Supplement 1

SP - S61-S66

JO - Physics and Chemistry of the Earth

JF - Physics and Chemistry of the Earth

SN - 1474-7065

T2 - Clays in natural and engineered barriers for radioactive waste confinement

Y2 - 17 September 2007 through 20 September 2007

ER -

ID: 107376