Diffusion and Migration of Ions in Sedimentary Rock Matrix

Behaviour of Cesium and Iodide in Micropores of Sandstone

Haruo Sato, Tamotsu Muraoka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In-diffusion experiments for Cs+ and I- in sandstone were performed as a function of ionic strength of porewater ([NaCl]=0.01, 0.51M) and tracer concentration ([CsI]=7.5E-5, 1.5E-2M) together with the measurements of the fundamental properties of sandstone, and apparent diffusivities (Da) and rock capacity factors (α) for Cs+ were obtained. The obtained Da-values for Cs+ were scarcely dependent on [NaCl], but increased with increasing [Cs+]. This trend is consistent with that of α-values, indicating that although effective diffusivity and distribution coefficient scarcely depend on [NaCl], those depend on [Cs+]. The concentration profiles of I- were all in breakthrough. Although this indicates that I- diffusion is faster than that of Cs+, the concentration profiles of I- may have been lower than those for blank samples.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium - Proceedings
EditorsR.J. Finch, D.B. Bullen
Pages541-546
Number of pages6
Volume757
Publication statusPublished - 2003
Externally publishedYes
EventMATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDING: Scientific Basis for Nuclear Waste Management XXVI - Boston, MA, United States
Duration: Dec 2 2002Dec 5 2002

Other

OtherMATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDING: Scientific Basis for Nuclear Waste Management XXVI
CountryUnited States
CityBoston, MA
Period12/2/0212/5/02

Fingerprint

Sedimentary rocks
Cesium
Sandstone
Ions
Ionic strength
Rocks
cesium iodide
Experiments

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Sato, H., & Muraoka, T. (2003). Diffusion and Migration of Ions in Sedimentary Rock Matrix: Behaviour of Cesium and Iodide in Micropores of Sandstone. In R. J. Finch, & D. B. Bullen (Eds.), Materials Research Society Symposium - Proceedings (Vol. 757, pp. 541-546)

Diffusion and Migration of Ions in Sedimentary Rock Matrix : Behaviour of Cesium and Iodide in Micropores of Sandstone. / Sato, Haruo; Muraoka, Tamotsu.

Materials Research Society Symposium - Proceedings. ed. / R.J. Finch; D.B. Bullen. Vol. 757 2003. p. 541-546.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Sato, H & Muraoka, T 2003, Diffusion and Migration of Ions in Sedimentary Rock Matrix: Behaviour of Cesium and Iodide in Micropores of Sandstone. in RJ Finch & DB Bullen (eds), Materials Research Society Symposium - Proceedings. vol. 757, pp. 541-546, MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDING: Scientific Basis for Nuclear Waste Management XXVI, Boston, MA, United States, 12/2/02.
Sato H, Muraoka T. Diffusion and Migration of Ions in Sedimentary Rock Matrix: Behaviour of Cesium and Iodide in Micropores of Sandstone. In Finch RJ, Bullen DB, editors, Materials Research Society Symposium - Proceedings. Vol. 757. 2003. p. 541-546
Sato, Haruo ; Muraoka, Tamotsu. / Diffusion and Migration of Ions in Sedimentary Rock Matrix : Behaviour of Cesium and Iodide in Micropores of Sandstone. Materials Research Society Symposium - Proceedings. editor / R.J. Finch ; D.B. Bullen. Vol. 757 2003. pp. 541-546
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