Study on Mechanism of Chemical Pollutant Migration in Soil during Water Permeation

土壤中化学污染物透水迁移机理研究

• 批准号: 06650552
• 负责人: SASAKI Seiichi
• 金额: $ 1.34万
• 依托单位: Wakayama National College of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06650552/
• 关键词: Chemical Pollutant; Cupper Ion; Degree of Weathering; Decomposed Granite Soil; Adsorption Characteristics; Soil Fabric; Diffusivity; Concentration Evaluation; 遅延係数; 拡散係数; 濃度変化

It is found from the results of copper ion adsorption experiment that the copper ion adsorption properties vary remarkably with the degree of weathering of samples. The ignition loss which has been adopted as a criterion of the degree of weathering is related to the amount of adsorbed copper ion. The slightly weathered sample shows Langmuir type and the severely weathered one is given by BET type from the sdsorption characteristics examining in detail, and the adsoption phynomenon for the severely weathered sample is confirmed as the adsorption within the pore systems caused by increasing degree of weathering by means of X ray micro analyer. Especially, the copper ion adsorption and the change of concentration for undisturbed sample of the weathered sample are charaterized by the soil fabric which is dependent on the pore size distribution.

铜离子吸附实验结果表明，不同风化程度的样品对铜离子的吸附性能有显著差异。烧失量与吸附铜离子的量有关，烧失量已被用作风化程度的标准。从吸附特征的详细考察中，轻度风化样品为Langmuir型，重度风化样品为BET型，而重度风化样品的吸附现象则是由于风化程度的增加而引起的孔隙系统内的吸附。特别是风化土样原状土样的铜离子吸附和浓度变化，其特征在于土样的组构特征，而组构特征与孔隙大小分布密切相关。

项目成果

S.Sasaki: "Mechanism of Heavy Metal Migration in Soil during Water Permeation" Proc.of the Second International Congress on Environmental Geotechnics. 143-146 (1996)

S.Sasaki：“水渗透过程中土壤中重金属迁移的机制”，第二届国际环境岩土工程大会论文集。

Seiichi SASAKI and Kazuhiko NISHIDA: "Seepage Characteristics of Undisturbed Decomposed Granite Soil based on Pore Structure" Journal of Japan Society of Civil Engineers. (to be published). (1997)

Seiichi SASAKI和Kazuhiko NISHIDA：“基于孔隙结构的原状风化花岗岩土的渗流特性”日本土木工程学会学报。

S.Sasaki: "Mechanism of Heavy Metal Migration in Soil during Water Permeation" Second International Congress on Environmental Geotechnics. (発表予定). (1996)

S.Sasaki：“水渗透过程中土壤中重金属迁移的机制”，第二届国际环境岩土工程大会（即将发表）。

佐々木清一: "乱さない土を対象とした重金属の吸着特性" 土木学会第50回年次学術講演会講演概要集. 3-A. 16-17 (1995)

Seiichi Sasaki：“原状土壤中重金属的吸附特性”日本土木工程师学会第 50 届学术年会摘要 3-A。

Seiichi SASAKI: "Estimation of Parameters Controlling Heavy Metal Transport in Soils" Proc. of The 51th Annual Conference of Japan Society of Civil Engineering. 3-A. 2-3 (1996)

Seiichi SASAKI：“土壤重金属传输控制参数的估计”Proc。