Journal of Soil and Groundwater Environment (한국지하수토양환경학회지:지하수토양환경)

Korean Society of Soil and Groundwater Environment (한국지하수토양환경학회)
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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
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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.

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  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