One-dimensional coupled model for large-deformation electroosmotic consolidation and heavy metal ion migration of silt

被引：0
|
作者：
Zhou Y.-D. [1 ,2 ]
Zhai X.-D. [1 ]
Yang W.-Q. [1 ]
机构：
[1] Key Laboratory of Soft Soils and Engineering Environment of Tianjin Province, Tianjin Chengjian University, Tianjin
[2] College of Civil Engineering, Tongji University, Shanghai
来源：
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2022年 / 44卷 / 10期
关键词：
electrokinetic treatment; electroosmotic consolidation; heavy metal; ion migration; silt;
D O I：
10.11779/CJGE202210008
中图分类号：
学科分类号：
摘要：
Dewatering and metal removal of silt can be obtained by applying electrokinetics. A coupled model for one-dimensional electroosmosis consolidation and ion migration, called ECT1, is proposed. It employs the piecewise linear finite difference method to simulate the ion migration and large-strain consolidation of soils under the coupling action of electric field, seepage field and chemical field, and to account for the nonlinear variation of physical and electro-chemical properties of soils, such as adsorption / desorption, neutralization / ionization, and precipitation / dissolution. The model is verified by Alshawabkeh's electrokinetic remediation experimental results for contaminated soil, numerical solutions and treatment tests on high-moisture content heavy metal-contaminated soil electrokinetic. The proposed model is applied to example studies to elucidate the coupling mechanism of heavy metal migration and consolidation in the electrokinetic treatment of high-moisture content contaminated silt. © 2022 Chinese Society of Civil Engineering. All rights reserved.
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页码：1827 / 1836
页数：9
相关论文
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