Experimental and modelling studies on diffusion of Cs, Ni and Sm in granodiorite, basalt and mudstone

Haruo Sato, T. Shibutani, M. Yui

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Through-diffusion experiments were carried out for Cs, Ni and Sm which can have a valence of I, II and III, respectively, through granodiorite, basalt and mudstone which have been considered candidates as natural barriers at 25°C under ambient conditions. The tracer solution was prepared as a mixture of Cs, Ni and Sm. The experiments were continued for a maximum of 596 days. During the experiments, the pH was monitored. The tortuosities of the rocks were measured using a NaCl tracer and a through-diffusion method. The porosities, pore size distributions, specific surface area and dry densities of the rocks were measured by a water saturation method and a mercury porosimetry. Effective and apparent diffusion coefficients (εDp, Da) were obtained for each element. The εDp and Da values ranged from 0.57 to 1.4 x 10-12 and 1.0 x 10-11 m2 s-1 for granodiorite, respectively. Those for mudstone ranged from 0.53 to 4.8 x 10-13 and from 2.6 to 3.9 x 10- 13 m2 s-1, respectively, and those for basalt ranged from 0.28 to 1.5 x 10-13 and from 1.6 to 2.1 x 10-13 m2 s-1, respectively. The εDp and Da values of Cs were the highest of the three elements for all rocks. Both diffusion coefficients for all elements were in the order: granodiorite > mudstone > basalt. The pore size was found to be relatively large for each rock compared with the ionic radius. The εDp values were predicted, based on the formation factors by taking into account the porosity and tortuosity. The predicted values were in relatively good agreement with the measured values with deviations of less than about five times.

Original languageEnglish
Pages (from-to)119-133
Number of pages15
JournalJournal of Contaminant Hydrology
Volume26
Issue number1-4
DOIs
Publication statusPublished - Apr 1997
Externally publishedYes

Fingerprint

granodiorite
mudstone
basalt
Rocks
tortuosity
rock
modeling
Pore size
Porosity
tracer
porosity
natural barrier
experiment
dry density
Experiments
Mercury
Specific surface area
Density (specific gravity)
surface area
saturation

Keywords

  • Basalt
  • Diffusion
  • Granodiorite
  • Mudstone
  • Porosity
  • Tortuosity

ASJC Scopus subject areas

  • Earth-Surface Processes

Cite this

Experimental and modelling studies on diffusion of Cs, Ni and Sm in granodiorite, basalt and mudstone. / Sato, Haruo; Shibutani, T.; Yui, M.

In: Journal of Contaminant Hydrology, Vol. 26, No. 1-4, 04.1997, p. 119-133.

Research output: Contribution to journalArticle

@article{5e56fc27a56f465594325c625bc0225b,
title = "Experimental and modelling studies on diffusion of Cs, Ni and Sm in granodiorite, basalt and mudstone",
abstract = "Through-diffusion experiments were carried out for Cs, Ni and Sm which can have a valence of I, II and III, respectively, through granodiorite, basalt and mudstone which have been considered candidates as natural barriers at 25°C under ambient conditions. The tracer solution was prepared as a mixture of Cs, Ni and Sm. The experiments were continued for a maximum of 596 days. During the experiments, the pH was monitored. The tortuosities of the rocks were measured using a NaCl tracer and a through-diffusion method. The porosities, pore size distributions, specific surface area and dry densities of the rocks were measured by a water saturation method and a mercury porosimetry. Effective and apparent diffusion coefficients (εDp, Da) were obtained for each element. The εDp and Da values ranged from 0.57 to 1.4 x 10-12 and 1.0 x 10-11 m2 s-1 for granodiorite, respectively. Those for mudstone ranged from 0.53 to 4.8 x 10-13 and from 2.6 to 3.9 x 10- 13 m2 s-1, respectively, and those for basalt ranged from 0.28 to 1.5 x 10-13 and from 1.6 to 2.1 x 10-13 m2 s-1, respectively. The εDp and Da values of Cs were the highest of the three elements for all rocks. Both diffusion coefficients for all elements were in the order: granodiorite > mudstone > basalt. The pore size was found to be relatively large for each rock compared with the ionic radius. The εDp values were predicted, based on the formation factors by taking into account the porosity and tortuosity. The predicted values were in relatively good agreement with the measured values with deviations of less than about five times.",
keywords = "Basalt, Diffusion, Granodiorite, Mudstone, Porosity, Tortuosity",
author = "Haruo Sato and T. Shibutani and M. Yui",
year = "1997",
month = "4",
doi = "10.1016/S0169-7722(96)00063-0",
language = "English",
volume = "26",
pages = "119--133",
journal = "Journal of Contaminant Hydrology",
issn = "0169-7722",
publisher = "Elsevier",
number = "1-4",

}

TY - JOUR

T1 - Experimental and modelling studies on diffusion of Cs, Ni and Sm in granodiorite, basalt and mudstone

AU - Sato, Haruo

AU - Shibutani, T.

AU - Yui, M.

PY - 1997/4

Y1 - 1997/4

N2 - Through-diffusion experiments were carried out for Cs, Ni and Sm which can have a valence of I, II and III, respectively, through granodiorite, basalt and mudstone which have been considered candidates as natural barriers at 25°C under ambient conditions. The tracer solution was prepared as a mixture of Cs, Ni and Sm. The experiments were continued for a maximum of 596 days. During the experiments, the pH was monitored. The tortuosities of the rocks were measured using a NaCl tracer and a through-diffusion method. The porosities, pore size distributions, specific surface area and dry densities of the rocks were measured by a water saturation method and a mercury porosimetry. Effective and apparent diffusion coefficients (εDp, Da) were obtained for each element. The εDp and Da values ranged from 0.57 to 1.4 x 10-12 and 1.0 x 10-11 m2 s-1 for granodiorite, respectively. Those for mudstone ranged from 0.53 to 4.8 x 10-13 and from 2.6 to 3.9 x 10- 13 m2 s-1, respectively, and those for basalt ranged from 0.28 to 1.5 x 10-13 and from 1.6 to 2.1 x 10-13 m2 s-1, respectively. The εDp and Da values of Cs were the highest of the three elements for all rocks. Both diffusion coefficients for all elements were in the order: granodiorite > mudstone > basalt. The pore size was found to be relatively large for each rock compared with the ionic radius. The εDp values were predicted, based on the formation factors by taking into account the porosity and tortuosity. The predicted values were in relatively good agreement with the measured values with deviations of less than about five times.

AB - Through-diffusion experiments were carried out for Cs, Ni and Sm which can have a valence of I, II and III, respectively, through granodiorite, basalt and mudstone which have been considered candidates as natural barriers at 25°C under ambient conditions. The tracer solution was prepared as a mixture of Cs, Ni and Sm. The experiments were continued for a maximum of 596 days. During the experiments, the pH was monitored. The tortuosities of the rocks were measured using a NaCl tracer and a through-diffusion method. The porosities, pore size distributions, specific surface area and dry densities of the rocks were measured by a water saturation method and a mercury porosimetry. Effective and apparent diffusion coefficients (εDp, Da) were obtained for each element. The εDp and Da values ranged from 0.57 to 1.4 x 10-12 and 1.0 x 10-11 m2 s-1 for granodiorite, respectively. Those for mudstone ranged from 0.53 to 4.8 x 10-13 and from 2.6 to 3.9 x 10- 13 m2 s-1, respectively, and those for basalt ranged from 0.28 to 1.5 x 10-13 and from 1.6 to 2.1 x 10-13 m2 s-1, respectively. The εDp and Da values of Cs were the highest of the three elements for all rocks. Both diffusion coefficients for all elements were in the order: granodiorite > mudstone > basalt. The pore size was found to be relatively large for each rock compared with the ionic radius. The εDp values were predicted, based on the formation factors by taking into account the porosity and tortuosity. The predicted values were in relatively good agreement with the measured values with deviations of less than about five times.

KW - Basalt

KW - Diffusion

KW - Granodiorite

KW - Mudstone

KW - Porosity

KW - Tortuosity

UR - http://www.scopus.com/inward/record.url?scp=0030618101&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030618101&partnerID=8YFLogxK

U2 - 10.1016/S0169-7722(96)00063-0

DO - 10.1016/S0169-7722(96)00063-0

M3 - Article

AN - SCOPUS:0030618101

VL - 26

SP - 119

EP - 133

JO - Journal of Contaminant Hydrology

JF - Journal of Contaminant Hydrology

SN - 0169-7722

IS - 1-4

ER -