Abstract
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.
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References
Alshawabkeh N, Yeung A, Bricka M (1999a) Practical aspects of in-situ electrokinetic extraction. J Environ Eng 125:27–35. https://doi.org/10.1061/(ASCE)0733-9372(1999)125:1(27)
Alshawabkeh N, Gale R, Ozsu-Acar E, Bricka R (1999b) Optimization of 2-d electrode configuration for electrokinetic remediation. J Soil Contam 8:617–635. https://doi.org/10.1080/10588339991339504
Hamed J, Bhadra A (1997) Influence of current density and ph on electrokinetic. J Hazard Mater 55:279–294. https://doi.org/10.1016/S0304-3894(97)00024-1
Jacobs R, Probstein R (1996) Two-dimensional modeling of electroremediation. AIChE J 42:1685–1696. https://doi.org/10.1002/aic.690420620
Jeon E, Jung J, Kim W, Ko S, Kitae B (2015) In situ electrokinetic remediation of as-, cu-, and pb-contaminated paddy soil using hexagonal electrode configuration: a full scale study. Environ sci pollut Res 22:711–722. https://doi.org/10.1007/s11356-014-3363-0
Kim B, Park G, Jeon E, Jung J, Jung H, Ko S, Baek K (2013) Field application of in situ electrokinetic remediation for As-, Cu-, and Pb-contaminated paddy soil. Water Air Soil Pollut 224:1698–1708. https://doi.org/10.1007/s11270-013-1698-7
Kim D, Cho J, Kitae B (2011) Pilot-scale ex situ electrokinetic restoration of saline greenhouse soil. J Soils Sediments 11:946–958. https://doi.org/10.1007/s11368-011-0394-8
Kim D, Jo S, Choi J, Yang J, Kitae B (2012a) Hexagonal two dimensional electrokinetic systems for restoration of saline agricultural lands: a pilot study. Chem Eng J 198:110–121. https://doi.org/10.1016/j.cej.2012.05.076
Kim D, Yoo J, Hwang B, Yang J, Baek K (2014a) Environmental assessment on electrokinetic remediation of multimetal-contaminated site: a case study. Environ Sci Pollut Res 21:6751–6758. https://doi.org/10.1007/s11356-014-2597-1
Kim W, Park G, Kim D, Jung H, Ko S, Kitae B (2012b) In situ field scale electrokinetic remediation of multi-metals contaminated paddy soil: Influence of electrode configuration. Electrochim Acta 86:89–95. https://doi.org/10.1016/j.electacta.2012.02.078
Kim W, Jeon E, Jung J, Jung H, Ko S, Seo C, Baek K (2014b) Field application of electrokinetic remediation for multi-metal contaminated paddy soil using two-dimensional electrode configuration. Environ Sci Pollut Res 21:4482–4491. https://doi.org/10.1007/s11356-013-2424-0
Oyanader M, Arce P, Dzurik A (2003) Avoiding pitfalls in electrokinetic remediation: robust design and operation criteria based on first principles for maximizing performance in a rectangular geometry. Electrophoresis 24:3457–3466. https://doi.org/10.1002/elps.200305612
Page M, Page C (2002) Electroremediation of contaminated soils. J Environ Eng 128:208–219. https://doi.org/10.1016/j.electacta.2012.04.089
Paz-García J, Johannesson B, Ottosen L, Ribeiro A, Rodríguez-Maroto J (2011) Modeling of electrokinetic processes by finite element integration of the nernst–planck–poisson system of equations. Sep Purif Technol 79:183–192. https://doi.org/10.1016/j.seppur.2011.02.023
Pugh E, Pugh E (1960) Principles of electricity and magnetism. Addison-Wesley Educational Publishers Inc, Boston
Reddy K (2009) Technical challenges to in-situ remediation of polluted sites. Geotech Geol Eng 28:211–221. https://doi.org/10.1007/s10706-008-9235-y
Reddy K, Cameselle C (2009) Electrochemical remediation technologies for polluted soils sediments and groundwater. Wiley, USA
Vereda-Alonso C, Rodriguez-Maroto J (2004) Two-dimensional model for soil electrokinetic remediation of heavy metals application to a copper spiked kaolin. Chemosphere 54:895–903. https://doi.org/10.1016/j.chemosphere.2003.09.002
Virkutyte J, Sillanpää M, Latostenma P (2002) Electrokinetic soil remediation—critical overview. Sci Total Environ 289:97–121. https://doi.org/10.1016/S0048-9697(01)01027-0
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The authors acknowledge the financial support provided by Brazilian funding agencies CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, FAPERJ - Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro and UFF - Federal Fluminense University.
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Alvarez, G.B., Bento, N.J.S., Neves, T.A. et al. Numerical study of the influence of electrode arrangements in electrokinetic remediation technique. Environ Sci Pollut Res 24, 26424–26435 (2017). https://doi.org/10.1007/s11356-017-0017-z
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DOI: https://doi.org/10.1007/s11356-017-0017-z