Статья
2019

Remediation of Clayey Soil Contaminated with Copper Sulfate Using Washing-Enhanced Electrokinetics Technique


 Mahdi O. Karkush Mahdi O. Karkush ,  Shahad D. Ali Shahad D. Ali
Российский электрохимический журнал
https://doi.org/10.1134/S1023193519130020
Abstract / Full Text

The present study focused on remediation of clayey soil contaminated with two percentages of copper sulfate using washing-electrokinetics technique enhanced by purging solutions and mid compartment. The intact soil samples are obtained from Al-Ahdab oil field located in the southeast of Iraq, where the soil samples are contaminated synthetically with two percentages of copper sulfate (6666.66 and 26666.66) ppm for 30 days. The electrokinetics technique enhanced with a mid compartment to reduce the exist way of contaminant from the soil. Also, it is enhanced by purging solutions in the anode, mid, and cathode compartments to control the pH value of solutions in the resvoirs. The activated carbon is used to prevent the reverse osmotic flow from cathode to anode. The main results of physical model are the variation of electrical current with time, pH value, and the accumulated volume of osmotic flow. Increasing the concentration of copper causes raising the electrical current generated during the remediation process, so the chemical reaction occurred in the anode, mid and cathode compartments are increased. The removal efficiency of copper from soil samples ranged 98.4 to 99.6%, which indicated high efficiency within short time, but using washing process causes a reduction in the time required for remediation by 30% and causes a slight increase in the removal efficiency.

Author information
  • Department of Civil Engineering, College of Engineering, University of Baghdad, Baghdad, Iraq

    Mahdi O. Karkush &  Shahad D. Ali

References
  1. Karkush, M.O., Zaboon, A.T., and Hussien, H.M., Studying the effects of contamination on the geotechnical properties of clayey soil, in Coupled Phenomena in Environmental Geotechnics, London: CRC Press, 2013.
  2. Uddin, M.K., A review on the adsorption of heavy metals by clay minerals, with special focus on the past decade, Chem. Eng. J., 2017, vol. 308, p. 438.
  3. Song, Y., Benamar, A., Mezazigh, S., and Wang, H., Citric acid-enhanced electroremediation of toxic metal-contaminated dredged sediments: effect of open/closed orifice condition, electric potential and surfactant, Pedosphere, 2018, vol. 28, no. 1, p. 35.
  4. Chinthamreddy, S., Geochemical characterization and enhanced mobilization of heavy metals during electrokinetic remediation of soils, PhD Thesis, Chicago: Univ. of Illinois, 1999.
  5. Reddy, K.R. and Chinthamreddy, S., Sequentially enhanced electrokinetic remediation of heavy metals in low buffering clayey soils, J. Geotech. Geoenviron. Eng., 2003, vol. 129, no. 3, p. 263.
  6. Kim, S.S., Kim, J.H., and Han, S.J., Application of the electrokinetic-fenton process for the remediation of kaolinite contaminated with phenanthrene, J. Hazard. Mater., 2005, vol. 118, nos. 1–3, p. 121.
  7. Karkush, M.O. and Altaher, TA., Remediation of contaminated soil of Thi-Qar oil refinery plant, Proc. 19th Int. Conf. on Soil Mechanics and Geotechnical Engineering, Seoul, 2017, p. 17.
  8. Karim, M.A., Electrokinetics and soil decontamination: concepts and overview, J. Electrochem. Sci. Eng., 2014, vol. 4, no. 4, p. 297.
  9. Li, Z., Yu, J.W., and Neretnieks, I., Removal of Pb(II), Cd(II) and Cr(III) from sand by electromigration, J. Hazard. Mater., 1997, vol. 55, nos. 1–3, p. 295.
  10. Jensen, P.E., Ottosen, L.M., and Harmon, T.C., The effect of soil type on the electrodialytic remediation of lead-contaminated soil, Environ. Eng. Sci., 2007, vol. 24, no. 2, p. 234.
  11. Nystrøm, G.M., Investigations of Soil Solution during Enhanced Electrodialytic Soil Remediation, Rapport BYG DTU R-009 Lyngby: Tech. Univ. of Denmark, 2001.
  12. Shehzad, A., Khan, A.H., and Rehman, Z., Characteristics of low plastic clay contaminated by industrial effluents, Int. J. Adv. Struct. Geotech. Eng., 2015, vol. 4, p. 138.
  13. Chandrasekaran, A., Ravisankar, R., Harikrishnan, N., Satapathy, K.K., Prasad, M.V.R., and Kanagasabapathy, K.V., Multivariate statistical analysis of heavy metal concentration in soils of Yelagiri Hills, Tamilnadu, India—spectroscopical approach, Spectrochim. Acta, Part A, 2015, vol. 137, p. 589.
  14. Reddy, K.R. and Karri, M.R., Effect of voltage gradient on integrated electrochemical remediation of contaminant mixtures, Land Contam. Reclam., 2006, vol. 14, no. 3, p. 685.
  15. Annual Book of ASTM Standards: Soil and Rock, Philadelphia, PA: ASTM Int., 2003.
  16. Craig, RF., Craig’s Soil Mechanics, Boca Raton, FL: CRC Press, 2004.
  17. Reddy, K.R. and Cameselle, C., Electrochemical Remediation Technologies for Polluted Soils, Sediments and Groundwater, New York: Wiley, 2009.
  18. Reddy, K.R., Electrokinetic remediation of soils at complex contaminated sites: Technology status, challenges, and opportunities, in Coupled Phenomena in environmental Geotechnics, Manassero, M., Dominijanni, A., Foti, S., and Musso, G., Eds., London: CRC Press, 2013, pp. 131–147.
  19. Reddy, K.R., Darko-Kagya, K., and Al-Hamdan, A.Z., Electrokinetic remediation of pentachlorophenol contaminated clay soil, Water, Air Soil Pollut., 2011, vol. 221, nos. 1–4, p. 35.
  20. Cameselle, C. and Reddy, K.R., Development and enhancement of electro-osmotic flow for the removal of contaminants from soils, Electrochim. Acta, 2012, vol. 86, p. 10.
  21. Saichek, R.E. and Reddy, K.R., Electrokinetically enhanced remediation of hydrophobic organic compounds in soils: a review, Crit. Rev. Environ. Sci. Technol., 2005, vol. 35, no. 2, p. 115.
  22. Rajić, L., Dalmacija, B., Perović, S.U., and Bokorov, M., Electrokinetic treatment of Cu contaminated kaolin: using an Fe/Cu galvanic cell, Int. J. Electrochem. Sci., 2012, vol. 7, p. 58.
  23. Dermont, G., Bergeron, M., Mercier, G., and Richer-Laflèche, M., Soil washing for metal removal: a review of physical/chemical technologies and field applications, J. Hazard. Mater., 2008, vol. 152, no. 1, p. 1.
  24. Zhou, D.M., Deng, C.F., and Cang, L., Electrokinetic remediation of a Cu contaminated red soil by conditioning catholyte pH with different enhancing chemical reagents, Chemosphere, 2004, vol. 56, no. 3, p. 265.
  25. Wong, J.S., Hicks, R.E., and Probstein, R.F, EDTA-enhanced electroremediation of metal-contaminated soils, J. Hazard. Mater., 1997, vol. 55, nos. 1–3, p. 61.
  26. Giannis, A. and Gidarakos, E., Washing enhanced electrokinetic remediation for removal cadmium from real contaminated soil, J. Hazard. Mater., 2005, vol. 123, nos. 1–3, pp. 165–175.
  27. Saeedi, M., Jamshidi, A., Shariatmadri, N., and Falamaki, A., An investigation on the efficiency of electrokinetic coupled with carbon active barrier to remediate nickel contaminated clay, Int. J. Environ. Res., 2009, vol. 3, no. 4, p. 629.
  28. Reddy, K.R., Saichek, R.E., Maturi, K., and Ala, P., Effects of soil moisture and heavy metal concentrations on electrokinetic remediation, Indian Geotech. J., 2002, vol. 32, no. 2, p. 258.
  29. Virkutyte, J., Sillanpää, M., and Latostenmaa, P., Electrokinetic soil remediation-critical overview, Sci. Total Environ., 2002, vol. 289, nos. 1–3, p. 97.
  30. Kim, D.H., Ryu, B.G., Park, S.W., Seo, C.I., and Baek, K., Electrokinetic remediation of Zn and Ni-contaminated soil, J. Hazard. Mater., 2009, vol. 165, nos. 1–3, p. 501.