Technology Status Report: In Situ Flushing - CLU-IN

In Situ Flushing Project Summaries
GWRTAC Case Study Database
GWRTAC ID: FLSH0070
Project Name: National Tsing Hua University - Effects of Surfactants of Sorpt
City: Hsinchu State/Province: TAIWAN
Primary GWRTAC Personal
Communication Source
(Name/Organization):
Project Summary:
None
Report(s)/Publication(s) (GWRTAC Source):
U.S. EPA Technology Innovation Office Technology Information Summary Report, Aug. 1-15,
1998, page 11, U.S. EPA Technology Innovation Office Technology Information Summary Report,
Sept. 1-15, 1998, page 10.
The following text was excerpted from U.S. EPA Technology Innovation Office Technology
Information Summary Report, Aug. 1-15, 1998, page 11, and U.S. EPA Technology Innovation
Office Technology Information Summary Report, Sept. 1-15, 1998, page 10.
To examine the feasibility of in situ remediation of monocyclic aromatic compounds, a study was
conducted on the effect of anionic and nonionic surfactants on the sorption and micellar
solubilization of benzene, chlorobenzene, and styrene (BCS) in soil-free and soil-water systems.
Sodium dodecyl sulfate (SDS) represented the anionic surfactant and Triton X-100 the nonionic
surfactant. Triton X-100 had a more significant effect on the determination of maximum adsorption
capacity than did SDS, and a correlation between the maximum sorption capacity and
partition coefficient was established. The results of the study suggest that a surfactant of suitable
type and concentration can enhance sorption and solubilization and represents a feasible option for
supporting bioremediation of soil contaminated with monocyclic aromatic compounds.
Triton X-100, sodium dodecyl sulfate (SDS), and ceyltrimethylammonium bromide (CTAB) were
three surfactants tested in batch experiments to determine the optimal surfactant system for the
remediation of cadmium-contaminated soil. At equilibrium, the desorbed concentrations of Cd
were respectively 1.87 and 3.27 mg/kd in the Triton X-100 and SDS-amended systems. The use of
CTAB hindered Cd desorption. The addition of EDTA enhanced Cd desorption from the
contaminated soil, although the addition of diphenylthiocarbazone as a complexing agent lowered
the extraction efficiency.
Report(s)/Publication(s) (Additional Information Sources):
Doong, Ruey A. and Wen G. Lei, Department of Nuclear Science, National Tsing Hua University,
Hsinchu, Taiwan, R.O.C., 1997: "Sorption and Micellar Solubilization of Monocyclic Aromatic
Compounds in the Presence of Nonionic and Anionic Surfactants", in J. Chin. Inst. Environ. Eng.,
Vol. 7, No. 3, pp. 219-227, 1997.
Doong, Ruey-an, Ya-Wen Wu, Wen-gang Lei, 1998: "Surfactant Enhanced Remediation of
Cadmium Contaminated Soils", Water Science and Technology, Vol. 37, No. 8, pg. 65-67, 1998
Ground-Water Remediation Technologies Analysis Center
Operated by Concurrent Technologies Corporation
Appendix - Page 137 of 164
Copyright GWRTAC 1998
Revision 1
Tuesday, November 17, 1998