Numerical study of the influence of electrode arrangements in electrokinetic remediation technique

被引：7

作者：

Alvarez, Gustavo Benitez ^{[1
]}

Soares Bento, Natanael Junior ^{[2
]}

Neves, Tiago Araujo ^{[1
]}

dos Santos, Fabiana Soares ^{[3
]}

Silva, Gilmar Clemente ^{[1
]}

Pereira de Sousa, Patricia Alves ^{[1
]}

机构：

[1] Fed Fluminense Univ, Dept Exact Sci, Ave Trabalhadores 420, BR-27255125 Volta Redonda, RJ, Brazil

[2] Fed Fluminense Univ, Masters Programme Computat Modeling Sci & Technol, Ave Trabalhadores 420, BR-27255125 Volta Redonda, RJ, Brazil

[3] Fed Fluminense Univ, Dept Agribusiness Engn, Ave Trabalhadores 420, BR-27255125 Volta Redonda, RJ, Brazil

来源：

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2017年 / 24卷 / 34期

关键词：

Electrode disposition; Laplace equation; Electrostatic model; Electric field strength; Unbounded domain; Finite-difference method; CONFIGURATION; ELECTROREMEDIATION; METALS; SCALE;

D O I：

10.1007/s11356-017-0017-z

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effectiveness of electrokinetic remediation for soils depends on several factors such as the arrangement and shape of electrodes. This paper presents a numerical study on external electrostatic field generated by seven different electrode configurations in any unbounded two-dimensional domain. The boundary condition at infinity for the voltage is approximated by the iterative algorithm that expands the domain till the limit of the specified tolerance (threshold value). The numerical results indicate that there is no unique configuration with larger effective area for all spacings between the oppositely charged electrodes. In addition, the configuration with the smallest inactive electric field strength spots for all spacings between the electrodes is not unique. Moreover, the voltage profile for all electrode configurations is nonlinear, and the external electric field strength varies widely near the electrodes. Only in the intermediate region between the electrodes the external electric field strength approaches a constant value.

引用

页码：26424 / 26435

页数：12

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