Electrokinetic remediation of perchloroethylene-contaminated soil

One large group of persistent and toxic contaminants is the hydrophobic organic contaminants. Among them, perchloroethylene (PCE) has been recognized as a representative group of these pollutants with low solubility. This study reports on the effects of electrokinetic remediation with non-ionic surf...

Full description

Saved in:
Bibliographic Details
Published in:International journal of environmental science and technology (Tehran) 2014-07, Vol.11 (5), p.1433-1438
Main Authors: Gholami, M., Yousefi Kebria, D., Mahmudi, M.
Format: Article
Language:English
Subjects:
Aquatic Pollution
Bioremediation
Earth and Environmental Science
Ecotoxicology
Electricity
Environment
Environmental Chemistry
Environmental Science and Engineering
Original Paper
Soil contamination
Soil Science & Conservation
Soils
Surfactants
Waste Water Technology
Water Management
Water Pollution Control
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:One large group of persistent and toxic contaminants is the hydrophobic organic contaminants. Among them, perchloroethylene (PCE) has been recognized as a representative group of these pollutants with low solubility. This study reports on the effects of electrokinetic remediation with non-ionic surfactant on PCE-contaminated soil. The performance of electrokinetic process was investigated in the treatment of clay soil that artificially contaminated with two levels: 10,000 and 30,000 mg/kg PCE and 0.33 g/kg Triton X-100. A DC power supply with electric voltage (1 V/cm) was used for 8–16 days. A negatively charged soil surface resulted in a more negative zeta potential and greater electroosmotic flow toward the cathode. The PCE was measured after extraction using n -hexane and analyzed by Fourier transform infrared spectroscopy instrument. The water content of soil was kept 25 % (w/w). Results were shown that PCE removal efficiency achieved was 74 and 89 % for 10,000 and 30,000 mg/kg PCE, respectively, for 16 days. Therefore, in this study, the integration of electrokinetic with non-ionic surfactant as a hybrid method was most effective for the remediation of PCE-contaminated soils.
ISSN:1735-1472
1735-2630
DOI:10.1007/s13762-014-0555-6