Complicating Factors of Using Ethylenediamine Tetraacetic Acid to Enhance Electrokinetic Remediation of Multiple Heavy Metals in Clayey Soils
Publication: Journal of Environmental Engineering
Volume 130, Issue 11
Abstract
Batch and electrokinetic experiments were conducted to investigate the removal of three different heavy metals, chromium(VI), nickel(II), and cadmium(II), from a clayey soil by using ethylenediamine tetraacetic acid (EDTA) as a complexing agent. The batch experiments revealed that high removal of these heavy metals was possible by using either a or EDTA concentration over a wide range of conditions . However, the results of the electrokinetic experiments using EDTA at the cathode showed low heavy metal removal efficiency. Using EDTA at the cathode along with the control at the anode with increased the throughout the soil and achieved high (95%) removal, but the removal of and was limited due to the precipitation of these metals near the cathode. Apparently, the low mobility of EDTA and its migration direction, which opposed electroosmotic flow, prevented EDTA complexation from occurring. Overall, this study found that many complicating factors affect EDTA-enhanced electrokinetic remediation, and further research is necessary to optimize this process to achieve high contaminant removal efficiency.
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References
1.
Acar, Y. B., and Alshawabkeh, A. N. (1993). “Principles of electrokinetic remediation.” Environ. Sci. Technol., 27(13), 2638–2647.
2.
Acar, Y. B., Gale, R. J., Alshawabkeh, A. N., Marks, R. E., Puppala, S., Bricka, M., and Parker, R. (1995). “Electrokinetic remediation: Basics and technology status.” J. Hazard. Mater., 40, 117–137.
3.
Alshawabkeh, A.N., and Bricka, M. ( 2000). “Basics and applications of electrokinetic remediation.” Remediation engineering of contaminated soils, D. L. Wise, D. J. Trantolo, E. J. H. I. Inyang, and U. Stottmeister, eds., Marcel Dekker, New York, 95–111.
4.
Chinthamreddy, S. ( 1999). “Geochemical characterization and enhanced mobilization of heavy metals during electrokinetic remediation of soils.” PhD dissertation, Univ. of Illinois at Chicago, Chicago.
5.
Danda, S. ( 2001). “Enhanced electrokinetic remediation of multiple heavy metals in spiked and field soils.” MS thesis, Univ. of Illinois at Chicago, Chicago.
6.
Dzenitis, J. M. (1997). “Steady state and limiting current in electroremediation of soil.” J. Electrochem. Soc., 144(4), 1317–1322.
7.
Eykholt, G.R. ( 1992). “Driving and complicating features of the electrokinetic treatment of contaminated soils.” PhD dissertation, Univ. of Texas at Austin, Austin, Tex.
8.
Eykholt, G. R. (1997). “Development of pore pressures by nonuniform electroosmosis in clays.” J. Hazard. Mater., 55, 171–186.
9.
Eykholt, G. R., and Daniel, D. E. (1994). “Impact of system chemistry on electro-osmosis in contaminated soil.” J. Geotech. Eng., 120(5), 797–815.
10.
Gray, D. H., and Mitchell, J. K. (1967). “Fundamentals aspects of electro-osmosis in soils.” J. Soil Mech. Found. Div., 93(6), 209–236.
11.
Grundl, T., and Michalski, P. (1996). “Electro-osmotically driven water flow in sediments.” Water Res., 30(4), 811–818.
12.
Heil, D. M., Samani, Z., Hanson, A. T., and Rudd, B. (1999). “Remediation of lead-contaminated soil by EDTA. I. Batch and column studies.” Water, Air, Soil Pollut., 113, 77–95.
13.
Kontopoulos, A., Papassiopi, N., Georgoudis, T., and Theodoratos, P. (2000). “Selective removal of lead from calcareous polluted soils using the -EDTA salt.” Water, Air, Soil Pollut., 122, 351–368.
14.
Lindsay, W.L. ( 1979). Chemical equilibria in soils, Wiley, New York.
15.
Lo, I. M. C., and Yang, X. Y. (1999). “EDTA extraction of heavy metals from different soil fractions and synthetic soils.” Water, Air, Soil Pollut., 109, 219–236.
16.
Mitchell, J.K. ( 1993). Fundamentals of soil behavior, Wiley, New York.
17.
Reddy, K. R., and Chinthamreddy, S. (2003a). “Effect of initial form of chromium on electrokinetic remediation in clays.” Adv. Environ. Res., 7, 353–365.
18.
Reddy, K. R., and Chinthamreddy, S. (2003b). “Sequentially enhanced electrokinetic remediation of heavy metals in low buffering clayey soils.” J. Geotech. Geoenviron. Eng., 129(3), 263–277.
19.
Reddy, K. R., Chinthamreddy, S., and Al-Hamdan, A. (2001b). “Synergistic effects of multiple metal contaminants on electrokinetic remediation of soils.” Remediation, 11 (3), 85–109.
20.
Reddy, K. R., and Parupudi, U. S. (1997). “Removal of chromium, nickel and cadmium from clays by in-situ electrokinetic remediation.” J. Soil Contaminat6(4), 391–407.
21.
Reddy, K. R., Parupudi, U. S., Devulapalli, S. N., and Xu, C. Y. (1997). “Effects of soil composition on the removal of chromium by electrokinetics.” J. Hazard. Mater., 55, 135–158.
22.
Reddy, K. R., Xu, C. Y., and Chinthamreddy, S. (2001a). “Assessment of electrokinetic removal of heavy metals from soils by sequential extraction analysis.” J. Hazard. Mater., B84(2–3), 279–296.
23.
Reed, B. E., Berg, M. T., Thompson, J. C., and Hartfield, J. H. (1995). “Chemical conditioning of electrode reservoirs during electrokinetic soil flushing of Pb-contaminated silt loam.” J. Environ. Eng. 121 (11), 805–815.
24.
Stumm, W., and Morgan, J.J. ( 1996). Aquatic chemistry, 3rd Ed., New York.
25.
Sun, B., Lombi, E., McGrath, S. P., and Zhao, F. J. (2001). “Leaching of heavy metals from contaminated soils using EDTA.” Environ. Pollut., 113, 111–120.
26.
Tanbouris, S., Papassiopi, N., and Kontopoulos, A. (1999). “Removal of heavy metals from calcareous contaminated soils by EDTA leaching.” Water, Air, Soil Pollut., 109, 1–15.
27.
U.S. Environmental Protection Agency (USEPA). ( 1986). “Test methods for evaluating solid waste. Laboratory manual, Physical/Chemical Methods, SW-86”, 3rd Ed., Vol. 1A, Office of Solid Waste and Emergency Response, Washington, D.C.
28.
U.S. Environmental Protection Agency (USEPA). ( 1995). “Contaminants and remedial options at selected metal-contaminated sites.” EPA/540/R-95/512. Office of Research and Development, Washington, D.C.
29.
Wong, J. S. H., Hicks, R. E., and Probstein, R. F. (1997). “EDTA-enhanced electroremediation of metal-contaminated soils.” J. Hazard. Mater., 55, 61–79.
30.
Yeung, A. T., Hsu, C., and Menon, R. M. (1996). “EDTA-enhanced electrokinetic extraction of lead.” J. Geotech. Eng., 122(8), 666–673.
Information & Authors
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Published In
Journal of Environmental Engineering
Volume 130 • Issue 11 • November 2004
Pages: 1357 - 1366
Copyright
Copyright © 2004 ASCE.
History
Published online: Nov 1, 2004
Published in print: Nov 2004
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