Abstract
Using the electrokinetic technique to remediate phenol contaminated soil, the adsorption characteristics, the best extraction agent and extraction conditions of phenol in clay were studied. The migration characteristics of phenol under the conditions of different pH, different moisture contents, different electric-field intensities and different additives were discussed. It was found that the adsorption behavior of phenol followed Freundlich isotherm and the maximum adsorption was 362 mg·kg-1. Using chloroform as an extractant, with ultrasonic time of 20 min plus temperature shock time of 30 min to extract phenol from soil, the extraction rate could reach 94.3%. Phenol migrated to the anode and enriched within 0-6 cm from the anode in the soil electrodynamics process. The best migration effect of phenol was achieved under the conditions of pH=8.16, moisture content of 40%, electric-field intensity of 2 V·cm-1, along with the additions of 0.1 mol·L-1 NaOH solution and 0.05 mol·L-1 LAS solution into the anode and the cathode, respectively. The enrichment rates of phenol reached 139% and 133.7%, respectively, at the distances of 0 cm and 6 cm away from the anode.
Graphical Abstract
Keywords
electrokinetic, phenol, soil remediation, clay
Publication Date
2013-08-28
Online Available Date
2013-03-15
Revised Date
2013-03-10
Received Date
2012-12-25
Recommended Citation
An-an LIU, kai FAN, hou-feng XIONG, kuo Dong, yang YANG, dong-lei ZOU.
Electrokinetic Migration Research of Phenol in Cohesive Soil[J]. Journal of Electrochemistry,
2013
,
19(4): Article 16.
DOI: 10.61558/2993-074X.2964
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol19/iss4/16
References
[1] Wang T, Zheng Y Y, Yang L, et al. Study on the electrokinetic remediation of phenol contaminated soil[J]. Environmental Science, 2009, 22(2): 22-25.
[2] Fytianos K, Voudrias E, Kokkalis E. Sorption-desorption behavior of 2,4-dichlorophenol by marine sediments[J]. Chemosphere, 2000, 40(1): 3-6.
[3] Zhou D M, Roman Z, Kurt C. Electrochemical remediation of copper contaminated kaolinite by conditioning anolyte and catholyte pH simultaneously[J]. Journal of Environmental Sciences, 2003, 15(3): 396-400.
[4] Yang G C C, Long Y W. Removal and degradation of phenol in a saturated flow by in-situ electrokinetic remediation and Fenton-like process[J]. Journal of Hazardous Materials, 1999, 69(3): 259-271.
[5] Luo Q S, Wang H, Zhang X H, et al. The migration of 2,4-dichlorophenol in soil under the effect of non-uniform electrokinetics[J]. Environmental Science Journal, 2004, 24(6): 1104-1109.
[6] Page M M, Page C L. Electroremediation of contaminated soils[J]. Journal of Environmental Engineering, 2002, 128(3): 208-219.
[7] Qiao Z X, Jin C J, Jia Y G, et al. The electrokinetic remediation technology of heavy metal contaminated soil[J]. Environmental Pollution Control Technology and Eequipment, 2004, (6): 80-83.
[8] Zhu N, Dong T Y. Major factors affecting soil electrokinetic remediation technology[J]. J S Environmental Science and Technology, 2005, 18(3): 33-35.
[9] Puppala S K, Alshawabkeh A N, Acar Y B, et al. Electrokinetic remediation of high sorption capacity soil[J]. Journal of Hazardous Matcrials, 1997, 55: 203-220.
