DOI QR코드

DOI QR Code

Electrokinetic Restoration of Saline Agricultural Land

염류집적 농경지의 전기동력학적 정화

  • Jo, Sung-Ung (Department of Environmental Engineering, Kumoh National Institute of Technology) ;
  • Kim, Do-Hyung (Department of Environmental Engineering, Kumoh National Institute of Technology) ;
  • Yang, Jung-Seok (Korea Institute of Science and Technolgy (KIST) - Gangneung Institute) ;
  • Chung, Keun-Yook (Department of Agricultural Chemistry, Chungbuk National University) ;
  • Baek, Ki-Tae (Department of Environmental Engineering, Chonbuk National University)
  • Received : 2012.04.17
  • Accepted : 2012.07.23
  • Published : 2012.08.31

Abstract

The influence of operation time on electrokinetic restoration was investigated to remove salts from sulfate-accumulated greenhouse soil. Operation time is directly related to the process cost, therefore, we determined the relationship between operation time and removal of salts. Nitrate and sodium were removed almost completely within 2 weeks, chloride and calcium was removed in proportion to the operation time. Sulfate was accumulated at the center of anode and cathode. The soil electrical conductivity (EC), an indicator for soil salinity, showed similar shape with the residual sulfate after electrokinetic treatment. The soil EC was not changed after 2 weeks, however, the energy consumption increased with operation time. Based on the experimental results, most salts except sulfate were removed within 2 weeks, but sulfate was not removed during same time period. For the further removal of sulfate, longer operation time is in need.

Keywords

References

  1. 박양호, 2000-2004, 농경지의 작물양분 종합관리(INM) 기술체계 확립.
  2. 오상은, 손정수, 옥용식, 주진호, 2010, 시설재배지에서 토양담수 및 배수에 의한 염류집적 경감 방안, Korean J. Soil. Sci. Fert., 43(5), 565-571.
  3. 윤석명, 한상재, 안동욱, 김수삼, 2010, 동전기를 이용한 시설재배지 토양 염류제거, 대한토목학회 정기학술대회, 인천송도, p. 1708-1711.
  4. 이현호, 백기태, 양지원, 2003, 새로운 순환방식을 적용한 동전기 정화기술에 의한 오염토양내의 납제거, 지하수토양환경, 8(1), 9-16.
  5. 조정민, 조성웅, 김도형, 양중석, 백기태, 2011, 질산염 및 황산염 집적 염류 토양의 전기역학적 개량, 지하수토양환경, 16(5), 18-23. https://doi.org/10.7857/JSGE.2011.16.5.018
  6. 통계청, 통계자료, 농업조사:시설면적 규모별 농가수(2005-2008).
  7. Acar, Y.B., Gale, R.J., Alshawabkeh, A.N., Marks, R.E., Puppala, S., Bricka, M., and Parker, R., 1995, Electrokinetic remediation : Basics and technology status, J. Hazard. Mater., 40, 117-137. https://doi.org/10.1016/0304-3894(94)00066-P
  8. Cho, J.M., Kim, K.J., Chung, K.Y., Hyun, S,H., Baek, Kitae., 2009, Restoration of saline soil in cultivated land using electrokinetic process, Sep. Sci. Tec., 44, 2371-2384. https://doi.org/10.1080/01496390902983729
  9. Cho, J.M., Park, S.Y., Baek, Kitae., 2010, Electrokinetic restoration of saline agricultural lands, J. Appl. Electrochem., 40(6), 1085-1093. https://doi.org/10.1007/s10800-010-0072-3
  10. Hamed, J., Acar, Y.B., and Gale R.J., 1991, Pb(II) removal from kailinite by electrokinetics, J. Geotech. Eng., 117(2), 241-271. https://doi.org/10.1061/(ASCE)0733-9410(1991)117:2(241)
  11. Kim, P.J., Chung, D.Y., and Lee D.K., 1997a, Effects of soil bulk density on saturated hydraulic conductivity and solute elution pattern, Korean J. Soil Sci. Fert., 30(3), 234-241.
  12. Kim, P.J., Lee D.K., and Chung, D.Y., 1997b, Vertical distribution of bulk density and salts in a plastic film house soil, Korean J. Soil Sci. Fert., 30(3), 226-233.
  13. Ok, Y.S., Yang, J.E., Yoo, K.Y., Kim, Y.B., Chung, D.Y., and Park, Y.H., 2005, Screening of adsorbents to reduce salt concentration in the plastic film house soil under continuous vegetable cultivation, Korean J. Environ. Agric., 24(3), 253-260. https://doi.org/10.5338/KJEA.2005.24.3.253

Cited by

  1. Economic Analysis on Desalination Technology for Saline Agricultural Land on the Basis of Crop Production vol.17, pp.5, 2012, https://doi.org/10.7857/JSGE.2012.17.5.040