Advertisement

Experimental Study on Electro-Osmosis Consolidation with Solar Power for Silt

  • Huiming Tan
  • Jianjun Huang
  • Jiawei Wang
Conference paper

Abstract

Electro-osmosis is an effective method for accelerating the consolidation of soft soils while it has not been widely used in practice because of its high electric energy consumption. With development of renewable solar energy, the solar energy is used in electro-osmosis method and the solar electro-osmosis technology has been proposed. This paper presents the performance of solar electro-osmosis method to improve the consolidation of soft clay based on the laboratory experiment, including the electric current and voltage, electric potential, water discharge, water content, shear strength. The energy consumption and carbon emission have also been discussed based on the measured data. The measured results show that both electric current and voltage in solar electro-osmosis are not stable and vary periodically in day time; the solar electro-osmosis can accelerate consolidation of soft clay effectively and the solar electro-osmosis technology has a well drainage efficiency and environmental benefits.

Keywords

Electro-osmosis Solar energy Drainage Energy consumption Carbon emission Non-constant direct current 

References

  1. 1.
    Bruell, C.J., Segall, B.A., Walsh, M.T.: Electroosmotic removal of gasoline hydrocarbons and TEC from clay. J. Environ. Eng. 118(1), 68–83 (1992)CrossRefGoogle Scholar
  2. 2.
    Casagrande, L.: Electro-osmosis stabilization of soils. J. Boston Soc. Civ. Eng. 39(1), 51–83 (1952)Google Scholar
  3. 3.
    Bjerrum, L., Moum, J., Eide, O.: Application of electro-osmosis to a foundation problem in a Norwegian quick clay. Géotechnique 17, 214–235 (1967)CrossRefGoogle Scholar
  4. 4.
    Chappell, B.A., Burton, P.L.: Electro-osmosis applied to unstable embankment. J. Geotech. Eng. Div. 101(8), 733–740 (1975). ASCEGoogle Scholar
  5. 5.
    Jones, C.J.F.P., Lamont-Black, J., Glendinning, S.: Electrokinetic geosynthetics in hydraulic applications. Geotext. Geomembr. 29, 381–390 (2011)CrossRefGoogle Scholar
  6. 6.
    Hamir, R.: Some aspects and applications of electrically conductive geosynthetic materials. Ph.D. thesis, University of Newcastle upon Tyne, UK (1997)Google Scholar
  7. 7.
    Yoshida, H., Shinkawa, T., Yukawa, H.: Comparison between electroosmotic dewatering efficiencies under conditions of constant electric current and constant voltage. J. Chem. Eng. Jpn 13(5), 414–417 (1980)CrossRefGoogle Scholar
  8. 8.
    Lockhart, N.C.: Electroosmotic dewatering of clays. I. Influence of voltage. Colloids Surf. 6(3), 229–238 (1983)CrossRefGoogle Scholar
  9. 9.
    Sprute, R.H., Kelsh, D.J.: Limited field tests in electrokinetic densification of mill tailings. Report of Investigations 8034. USBM (1975)Google Scholar
  10. 10.
    Micic, S., Shang, J.Q., Lo, K.Y., Lee, Y.N., Lee, S.W.: Electrokinetic strengthening of a marine sediment using intermittent current. Can. Geotech. J. 38(2), 287–302 (2011)CrossRefGoogle Scholar
  11. 11.
    Lo, K.Y., Inculet, I.I., Ho, K.S.: Electroosmotic strengthening of soft sensitive clays. Can. Geotech. J. 28(1), 74–83 (1991)CrossRefGoogle Scholar
  12. 12.
    Yoshida, H., Kitajyo, K., Nakayama, M.: Electroosmotic dewatering under A.C. electric field with periodic reversals of electrode polarity. Drying Technol. 17(3), 539–554 (1999)CrossRefGoogle Scholar
  13. 13.
    Estabragh, A.R., Naseha, M., Javadi, A.A.: Improvement of clay soil by electro-osmosis technique. Appl. Clay Sci. 95, 32–36 (2014)CrossRefGoogle Scholar
  14. 14.
    Wu, H., Hu, L.M., Wen, Q.B.: Electro-osmotic enhancement of bentonite with reactive and inert electrodes. Appl. Clay Sci. 111, 76–82 (2015)CrossRefGoogle Scholar
  15. 15.
    Xue, Z.J., Tang, X.W., Yang, Q.: Influence of voltage and temperature on electro-osmosis experiments applied on marine clay. Appl. Clay Sci. 141, 13–22 (2017)CrossRefGoogle Scholar
  16. 16.
    Tao Y.L., Zhou J., Gong X.N., Chen Z., Hu P.C.: Influence of polarity reversal and current intermittence on electro-osmosis. In: Ground Improvement and Geosynthetics, pp. 198–208. Geo-Shanghai (2014)Google Scholar
  17. 17.
    Rhodes, J.D., Raats, P.A.C., Prather, R.J.: Effects of liquid-phase electrical conductivity, water content, and surface conductivity on the bulk soil electrical conductivity. Soil Sci. Soc. Am. J. 40(5), 651–656 (1976)CrossRefGoogle Scholar
  18. 18.
    Rinaldi, V.A., Cuestas, G.A.: Ohmic conductivity of a compacted silty clay. J. Geotech. Geoenviron. Eng. 128(10), 824–835 (2002)CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.Key Laboratory of Coastal Disaster and Defense of Ministry of EducationHohai UniversityNanjingChina
  2. 2.College of Harbour Coastal and Offshore EngineeringHohai UniversityNanjingChina

Personalised recommendations