Numerical study of the influence of electrode arrangements in electrokinetic remediation technique
| Autor: | Gustavo Benitez Alvarez, Tiago Araújo Neves, Patricia Alves Pereira de Sousa, Gilmar Clemente Silva, Natanael Júnior Soares Bento, Fabiana Soares dos Santos |
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| Rok vydání: | 2017 |
| Předmět: |
Health
Toxicology and Mutagenesis Static Electricity 02 engineering and technology 010501 environmental sciences 01 natural sciences Soil Physics::Plasma Physics Electric field Environmental Chemistry Boundary value problem Electrodes Environmental Restoration and Remediation 0105 earth and related environmental sciences Electrokinetic remediation business.industry Chemistry Antenna aperture Finite difference method Electrical engineering General Medicine Mechanics Models Theoretical 021001 nanoscience & nanotechnology Pollution Nonlinear system Kinetics Electrode 0210 nano-technology business Voltage |
| Zdroj: | Environmental science and pollution research international. 24(34) |
| ISSN: | 1614-7499 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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