• Electrokinetic Restoration of Saline Agricultural Land
  • Jo, Sung-Ung;Kim, Do-Hyung;Yang, Jung-Seok;Chung, Keun-Yook;Baek, Ki-Tae;
  • Department of Environmental Engineering, Kumoh National Institute of Technology;Department of Environmental Engineering, Kumoh National Institute of Technology;Korea Institute of Science and Technolgy (KIST) - Gangneung Institute;Department of Agricultural Chemistry, Chungbuk National University;Department of Environmental Engineering, Chonbuk National University;
  • 염류집적 농경지의 전기동력학적 정화
  • 조성웅;김도형;양중석;정근욱;백기태;
  • 금오공과대학교 환경공학과;금오공과대학교 환경공학과;한국과학기술연구원 강릉분원;충북대학교 농화학과;전북대학교 환경공학과;
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: Electrokinetic;Saline;Sulfate;Nitrate;

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This Article

  • 2012; 17(4): 19-26

    Published on Aug 31, 2012

  • 10.7857/JSGE.2012.17.4.019
  • Received on Apr 17, 2012
  • Revised on Jul 23, 2012
  • Accepted on Jul 23, 2012