[1] Du Yanjun, Liu Songyu, Hayashi Shigenori,. Some factors controlling diffusive transportof potassium ion through clayey soils [J]. Journal of Southeast University (English Edition), 2006, 22 (1): 106-111. [doi:10.3969/j.issn.1003-7985.2006.01.023]

Copy

Some factors controlling diffusive transportof potassium ion through clayey soils()

Share：

Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

22

Issue:

2006 1

Page:

106-111

Research Field:

Other Disciplines

Publishing date:

2006-03-20

Info

Title:

Some factors controlling diffusive transportof potassium ion through clayey soils

Author(s):

Du Yanjun¹;  Liu Songyu¹;  Hayashi Shigenori²

¹Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China
²Institute of Lowland Technology, Saga University, Saga 840-8502, Japan

Keywords:

adsorption;  Ariake clay;  barrier;  batch-type test;  contaminant;  diffusion;  landfill

PACS:

V443;X50

DOI:

10.3969/j.issn.1003-7985.2006.01.023

Abstract:

To investigate the potential use of two Japanese regional clayey soils, named Ariake clay and Akaboku soil, as soil barrier materials, a series of laboratory diffusion tests are presented.Using an available computer program Pollute V6.3, the effective diffusion coefficients of K⁺of the soils were back-calculated from the diffusion tests.It is found that the Ariake clay has a larger effective diffusion coefficient than the Akaboku soil, indicating that the Ariake clay may provide a better diffusion barrier.A comparison of the effective diffusion coefficients between the single-salt solution condition and the multi-salt solution condition indicates that soils have higher effective diffusion coefficients under the former condition.It is suggested to use miscible solution close to landfill leachates for determining effective diffusion coefficients of specified chemical species for a practical design.

References:

[1] Nabeshima Y, Matsui T.Reuse of molten slag as ground improvement materials[C]//Proceedings of 6th International Symposium on Environmental Geotechnology and Global Sustainable Development.Seoul, 2002: 503-508.
[2] Kamon M, Katsumi T.Clay liners for waste landfill[C]//Proceedings of the International Symposium on Suction, Swelling, Permeability and Structure of Clays.Rotterdam:Balkema, 2001: 29-46.
[3] Ariake Bay Research Group.Quaternary system of the Ariake and Shiranui Bay Areas, with special reference to the Ariake soft clay[R]. Association for Geological Collaboratoration in Japan, 1965.(in Japanese)
[4] Ohtsubo M, Egashira K, Kashima K.Depositional and post-depositional geochemistry, and its correlation with the geotechnical properties of marine clays in Ariake Bay, Japan [J].Geotechnique, 1995, 45(3):509-523.
[5] Kita D, Nakata R, Harada, M.Geochemical study on ashy soil in Kyushu district and its lime stabilization [J].Journal of the Clay Science Society of Japan, 1969, 9(12):28-40.
[6] Freeze R A, Cherry J A.Ground water[M].New Jersey:Prentice-Hall, Inc, 1979.
[7] Rao P S C.Pore geometry effects on solute dispersion in aggregated soils and evaluation of a predictive model[D].University of Hawaii, 1974.
[8] Rowe R K, Booker J R.1-D pollutant migration in soils of finite depth[J].Journal of Geotechnical Engineering, ASCE, 1985, 111(4):479-499.
[9] Rowe R K, Booker J R.Program POLLUTE © 1983, 1990, 1994 [R].Ontairo:GAEA Environmental Engineering Ltd., 1994.
[10] Rowe R K, Badv K.Chloride migration through clayey silt underlain by fine sand or silt [J].Journal of Geotechnical Engineering, ASCE, 1996, 122(1):60-68.
[11] Husted R F, Low P F.Ion diffusion in bentonite [J].Soil Science, 1954, 21:349-362.

Memo

Memo:

Biography: Du Yanjun(1971—), male, doctor, professor, yanjundu@gmail.com.

Common functions