Surfactant Enhanced Electroremediation of Phenanthrene

Abstract

Abstract: Removal of hydrophobic organic contaminants (HOCs) from soil of low permeability by
electroremedia-tion was investigated by using phenanthrene and kaolinite as a model system.
Tween 80 was added into the purgingsolution in order to enhance the solubility of
phenanthrene. The effects of pH on the adsorption of phenanthreneand Tween 80 on kaolinite
and the magnitude of ζ-potential of kaolinite were examined, respectively. The effects
ofelectric field strength indicated by electric current on the electroremediation behavior,
including the pH of purgingsolution, the conductivity, phenanthrene concentration and flow
rate of effluent, were experimentally investigated,respectively. In case of an electric
field of 25 mA applied for 72 hours, over 90% of phenanthrene was removedfrom 424g (dry
mass) of kaolinite at an energy consumption of 0.148kW@h. The experimental results
described inpresent study show that the addition of surfactant into purging solution
greatly enhances the removal of HOCs byelectroremediation.

Key words: electroremediation, phenanthrene, polycyclic aromatic hydrocarbon, kaolinite, electroosmosis

摘要： Removal of hydrophobic organic contaminants (HOCs) from soil of low permeability by
electroremedia-tion was investigated by using phenanthrene and kaolinite as a model system.
Tween 80 was added into the purgingsolution in order to enhance the solubility of
phenanthrene. The effects of pH on the adsorption of phenanthreneand Tween 80 on kaolinite
and the magnitude of ζ-potential of kaolinite were examined, respectively. The effects
ofelectric field strength indicated by electric current on the electroremediation behavior,
including the pH of purgingsolution, the conductivity, phenanthrene concentration and flow
rate of effluent, were experimentally investigated,respectively. In case of an electric
field of 25 mA applied for 72 hours, over 90% of phenanthrene was removedfrom 424g (dry
mass) of kaolinite at an energy consumption of 0.148kW@h. The experimental results
described inpresent study show that the addition of surfactant into purging solution
greatly enhances the removal of HOCs byelectroremediation.

关键词: electroremediation;phenanthrene;polycyclic aromatic hydrocarbon;kaolinite; electroosmosis

SHE Peng, LIU Zheng, DING Fuxin, YANG Jiangang, LIU Xiang. Surfactant Enhanced Electroremediation of Phenanthrene[J]. .

佘鹏, 刘铮, 丁富新, 杨建刚, 刘翔. 菲污染土壤的电修复过程[J]. CIESC Journal.

References

[1] Shapiro, A.P., Probstein, R.F., "Removal of contaminants from saturated day by
electroosmosis", Environ. Sci. Technol., 27, 283-291 (1993).
[2] Shannon, D., "Lasagna process field success increases doesinterest", Environ. Sci.
Technol., 29 (10), A452 (1995).
[3] Acar, Y.B., Alshawabkeh, A.N., "Principles of electrokinetic remediation", Environ.
Sci. Technol., 27 (13), 2638- 2647 (1993).
[4] Pomes, V., Fernandez, A., Costarramone, N., Grano, B.,Houi, D., "Fluorine migration in
a soil bed submitted to an electric field: Influence of electric potential on fluorine
removal", Colloid Surf., A, 159,481-490 (1999).
[5] Popov, K., Yachmenev, V., Kolosov, A., Shabanova, N., "Effect of soil electroosmotic
flow enhancement by chelatng reagents", Colloid Surf., A, 160, 135-140 (1999).
[6] Bruell, C.J., Segall, B.A., Walsh, M.T., "Electroosmoticremowl of gasoline hydrocarbons
and TCE from clay", J. Environ. Eng., ASCE, 118 (1), 68-83 (1992).
[7] Kim, J., Lee, K., "Effects of electric field directions on surfactant enhanced
electrokinetic remediation of dieselcontaminated sand column", J. Environ. Sci. Health,
A34(4), 863-877 (1999).
[8] Yang, J.W., Park, J.Y., Lee, H.H., Cho, H.J., "Surfactant enhanced electrokinetic
remediation of soil contaminated with hydrocarbons", Proceedings of the 3rd Symposium and
Status Report on Electrokinetic Remediation, Karlsruhe, Germany (2001).
[9] Ko, S.-O., Schlautman, M.A., Carraway, E.R., "Partitioning of hydrophobic organic
compounds to sorbed surfac tants. 1. Experimental studies", Environ. Sci. Technol, 32 (18),
2769-2775 (1998).
[10] Ko, S.-O., Schlautman, M.A., "Partitioning of hydrophobic organic compounds to sorbed
surfactants. 2. Model development/predictions for surfactant-enhanced remediation
applications", Environ. Sci. Technol., 32 (18), 2776-2781(1998).
[11] Ko, S.-O., Schlautman, M.A., Carraway, E.R., "Effects of solution chemistry on the
partitioning of phenanthrene to sorbed surfactants", Environ. Sci. Technol., 32 (22), 3542
-3548 (1998).
[12] Ko, S.-O., Schlautman, M.A., Carraway, E.R, "Partitioning of hydrophobic organic
compounds to hydroxypropyl-beta cyclodextrin: Experimental studies and model predictions
for surfactant-enhanced remediation applications", Environ. Sci. Technol., 33 (16), 2765-
2770 (1999).
[13] Ko, S.-O, Schlautman, M.A., Carraway, E.R., "Cyclodextrin-enhanced electrokinetic
removal of phenanthrene from a model clay soil", Environ. Sci. Technol., 34(8), 1535-1541
(2000).
[14] Pennell, K.D., Adinolfi, A.M., Abriola, L.M., Diallo, M.S., "Solubilization of
dodecane, tetrachloroethylene, and 1,2dichloro- benzene in micellar solutions of
ethoxylated nonionic surfactants", Environ. Sci. Technol., 31 (5), 1382-1389 (1997).
[15] Adamson, A.W., Physical Chemistry of Surfaces, 5th ed., John Wiley and Sons, New York
(1990).
[16] Brownawell, B.J., Chen, H., Zhang, W.J., Westall, J.C., "Sorption of nonionic
surfactants on sediment materials", Environ. Sci. Technol., 31 (6), 1735-1741 (1997).