Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 24, Issue 10, Pages 9820-9825Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-017-8720-3
Keywords
Electromigration; Electroosmosis flow; Pretreatment; Zeta potential; Electrolyte
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Funding
- KEITI through GAIA [2016000550001]
- National Research Foundation of Korea [2015R1D1A1A09060537]
- Korea Environmental Industry & Technology Institute (KEITI) [ARQ201602037002] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2015R1D1A1A09060537] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Electrokinetic remediation (EKR) is the most efficient technique for remediation of fine-grained soil. The primary removal mechanisms of heavy metal in EKR are the electromigration and electroosmosis flow under appropriate electric gradients. Most EKR studies have researched the variation according to the electrolyte and electric voltage. Also, EKR could be influenced by the migration velocity of ions, while few studies have investigated the effect of moisture content. In this study, soil moisture was controlled by using tap water and NaOH as electrolytes to enhance electromigration and electroosmosis flow. In both electrolytes, the higher moisture content led to the more As removal efficiency, but there were no differences between tap water and NaOH. Therefore, tap water was the most cost-effective electrolyte to remove As from fine-grained soil.
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