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Treatment of Heavy Metals and Phenol in Contaminated Soil Using Direct Current and Pulse Voltage

직류 전원과 펄스 전원을 이용하여 오염된 토양에서의 중금속과 페놀 처리

  • Choi, Changsik (Clean Energy Team, Institute for Advanced Engineering) ;
  • Hong, Bumeui (Clean Energy Team, Institute for Advanced Engineering) ;
  • Choi, Hee Young (Clean Energy Team, Institute for Advanced Engineering) ;
  • Lee, Eunsil (Clean Energy Team, Institute for Advanced Engineering) ;
  • Choi, Suk Soon (Department of Biological and Environmental Engineering, Semyung University)
  • 최창식 (고등기술연구원 플랜트엔지니어링센터) ;
  • 홍범의 (고등기술연구원 플랜트엔지니어링센터) ;
  • 최희영 (고등기술연구원 플랜트엔지니어링센터) ;
  • 이은실 (고등기술연구원 플랜트엔지니어링센터) ;
  • 최석순 (세명대학교 바이오환경공학과)
  • Received : 2016.09.30
  • Accepted : 2016.10.31
  • Published : 2016.12.10

Abstract

In this work, the treatment of heavy metals and phenol in the contaminated soil was investigated by applying direct current (DC) and pulse voltage. When the DC was used, the removal efficiencies for Cu, Zn, As, and Pb were 73, 88, 10, and 10%, respectively, and more than 95% for phenol was removed. Furthermore, when a pulse voltage was employed the removal efficiencies for Cu, Zn, As, and Pb were 88, 92, 40, and 40%, respectively, and 87% of phenol was removed. The results indicate that the application of a pulse voltage for the treatment of contaminated soil reduced electro-osmosis, but increased the rate of electric current movement of heavy metals. In addition, the removal efficiencies for As and Pb have been improved due to the enhanced adsorption capacity of clay components in the soil. Therefore, these experimental results could be effectively applied in remediation technology for the treatment of various heavy metals and phenol.

Keywords

electrokinetics (EK);pulse voltage;direct current;heavy metals;phenol

Acknowledgement

Supported by : 국토교통부

References

  1. S. Ridhards and A. Bouazza, Phenol adsorption in organo-modified basaltic clay and bentonite, Appl. Clay Sci., 37, 133-142 (2007). https://doi.org/10.1016/j.clay.2006.11.006
  2. S. S. Kim and S. J. Han, Remediation Technology of Contaminated Soil by Electrokinetic Method, 197, Goomi Book, Seoul (2003).
  3. Y. B. Acar, H. Li, and R. J. Gale, Phenol removal from kaolinite by electrokinetics, J. Geotech. Eng., 118(11), 1837-1852 (1992). https://doi.org/10.1061/(ASCE)0733-9410(1992)118:11(1837)
  4. R. Haus, R. Zorn, K. Czurda, and H. Ruthe, Electrokinetic transport behavior of phenol in upper permian soils, EREM 2001, 3rd Symposium and Report on Electrokinetic Remediation, Kalsruhe, 17-1-17-13 (2001).
  5. Y. B. Acar and A. N. Alshawabkeh, Principles of electrokinetic remediation, Environ. Sci. Technol., 27(13), 2638-2647 (1993). https://doi.org/10.1021/es00049a002
  6. S. K. Puppala, A. N. Alshawabkeh, Y. B. Acar, R. J. Gale, and M. Bricka, Enhanced electrokinetic remediation of high sorption capacity soil, J. Hazard. Mater., 55, 203-220 (1997). https://doi.org/10.1016/S0304-3894(97)00011-3
  7. B. Kornilovich, N. Mishchuk, K. Abbruzzese, G. Pshinko, and R. Klishchenko, Enhanced electrokinetic remediation of metals-contaminated clay, Colloids Surf. A, 265, 114-123 (2005). https://doi.org/10.1016/j.colsurfa.2005.02.042
  8. T. R. Sun, L. M. Ottosen, P. E. Jensen, and G. M. Kirkelund, Effect of pulse current on acidification and removal of Cu, Cd, and As during suspended electrodialytic soil remediation, Electrochim. Acta, 107, 187-193 (2013). https://doi.org/10.1016/j.electacta.2013.05.138
  9. T. R. Sun, L. M. Ottosen, and J. Mortensen, Electrodialytic soil remediation enhanced by low frequency pulse current - Overall chronopotentiometric measurement, Chemosphere, 90(4), 1520-1525 (2013). https://doi.org/10.1016/j.chemosphere.2012.08.038
  10. T. R. Sun, L. M. Ottosen, and P. E. Jensen, Pulse current enhanced electrodialytic soil remediation - Comparison of different pulse frequencies, J. Hazard. Mater., 237-238, 299-306 (2012). https://doi.org/10.1016/j.jhazmat.2012.08.043