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Effect of processing fluid and initial concentration on electrokinetic removal of environmental hormone—nonylphenol (NP) from soil matrix

Authors
  • Hung, Chung-Hsuang1
  • Yuan, Ching2
  • Chen, Kun-Cho2
  • 1 National First University of Science and Technology, Department of Safety, Health and Environmental Engineering, No. 1, University Rd., Yenchau, Kaohsiung, 824, Taiwan, ROC , Kaohsiung (Taiwan)
  • 2 National University of Kaohsiung, Department of Civil and Environmental Engineering, No. 700, Kaohsiung University Rd., Nan-Tzu Dist., Kaohsiung City, 811, Taiwan , Kaohsiung City (Taiwan)
Type
Published Article
Journal
Journal of Applied Electrochemistry
Publisher
Springer Netherlands
Publication Date
Jan 27, 2010
Volume
40
Issue
6
Pages
1123–1130
Identifiers
DOI: 10.1007/s10800-010-0081-2
Source
Springer Nature
Keywords
License
Yellow

Abstract

This study was aimed to investigate the electrokinetic removal of environmental hormone––nonylphenol (NP)––from soil matrix under potential gradient of 1 V cm−1 for 5-day treatment. The EK experiments were conducted with four processing fluids of de-ionized water, citric acid, NaOH, and methanol in a Pyrex glass cylindrical cell. Results showed that the elcetrokinetic removal efficiency of the above-mentioned processing fluid was 29, 36–38, 43–53, and 53–69%, respectively. It was found that the removal of NP in EK system was highly related to the solubility of NP in processing fluid. Approximate 88.8–94.2% of NP removal was collected in the cathode reservoir after EK treatment, which was 7.9–16.2 times greater than that collected in the anode reservoir. It was concluded that NP was mainly removed from anode to cathode by electroosmosis flow. The electrokinetic phenomenon of current density, electroosmistic permeability, and power consumption were also investigated.

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