Restoration of saline soil in cultivated land using electrokinetic process

Jung Min Cho, Kyung Jo Kim, Keun Yook Chung, Seunghun Hyun, Kitae Baek

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

Study utilized an electrokinetic (EK) process to investigate the movement and removal of salts in greenhouse soil. Each experiment was operated with a constant voltage gradient of 1 V/cm between 6 to 48 h and used tap water as an electrolyte. A significant amount of anions was removed through electroosmotic flow and electromigration. Nitrates showed the highest removal efficiency (81.86%) after 48 h. However, the removal of cations by EK process was negligible; in fact, the exchangeable concentration of potassium after EK treatment actually increased compared to the initial value. In this experiment, the electrical conductivity of the soil was lowered to 60% of the initial value, signifying that salts were removed by EK. Based on the results of this study, EK can be a very effective technique to control the concentration of salts in saline soil.

Original languageEnglish
Pages (from-to)2371-2384
Number of pages14
JournalSeparation Science and Technology
Volume44
Issue number10
DOIs
Publication statusPublished - 2009 Jan

Keywords

  • Electrical conductivity
  • Electrokinetic remediation
  • Ionic mobility
  • Saline soil

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Process Chemistry and Technology
  • Filtration and Separation

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