[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]
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Some factors controlling diffusive transportof potassium ion through clayey soils(
)
钾离子在粘性土中扩散运移的影响因素
)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
- 钾离子在粘性土中扩散运移的影响因素
- 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.
- 为了研究日本九州地区的2种区域性土——有明粘土和赤土作为废弃物填埋场底部粘土衬垫层的适应性, 做了一系列室内扩散试验.应用软件Pollute V6.3模拟计算了实验结果, 反算出了钾离子的扩散系数.研究结果表明, 有明粘土的扩散系数比赤土的扩散系数小, 说明有明粘土有望能作为更合适的粘土衬垫材料.通过对比试验研究, 发现在混合溶液的情况下, 钾离子的扩散系数较在单一溶液的钾离子的扩散系数小.因此建议尽可能使用与现场淋滤液成分相近的混合溶液来做扩散试验, 以求出扩散系数来作为废弃物填埋场的设计和性能评估参数.
References:
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Memo
- Memo:
- Biography: Du Yanjun(1971—), male, doctor, professor, yanjundu@gmail.com.