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Received July 19, 2016
Accepted October 24, 2016
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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One-dimensional column and three-dimensional box flushing of silicone emulsion-enhanced remediation for chlorinated solvent contaminated soils
Korea Railroad Research Institute, #176, Railroad Museum Road, Uiwang-si, Gyeonggi-do 16105, Korea 1Korea Institute of Science and Technology - Gangneung Institute, Gangneung 25451, Korea 2Department of Environmental Engineering, Chonbuk National University, 567, Baekje-daero, Deokjin-gu, Jeonju, Jeollabukdo 54896, Korea
klez@krri.re.kr
Korean Journal of Chemical Engineering, March 2017, 34(3), 741-746(6), 10.1007/s11814-016-0301-5
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Abstract
Aquifer contamination by dense non-aqueous phase liquids such as chlorinated solvents poses a huge threat to human health. Most chlorinated solvents biodegrade slowly under aerobic and anaerobic conditions. Furthermore, chlorinated solvents exist as free phase in aquifers and continuously contaminate groundwater because they have high density and low aqueous solubility. In this study, the feasibility of emulsion-based remediation for field application was investigated using a one-dimensional column and three-dimensional flushing. One-dimensional column experiments were performed to confirm the effects of soil components such as organics, silt, and clay on flushing performance. High organics (12%) and silt/clay (45%) inhibited solubilization of TCE. In three-dimensional flushing of TCE, a diagonal flow of emulsion was observed and downward migration of chlorinated solvents was prevented.
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Brusseau ML, Rao PSC, Environ. Sci. Technol., 25(8), 1501 (1991)
Heron G, Barcelona MJ, Andersen ML, Christensen TH, Groundwater, 35(1), 6 (1997)
Chapelle FH, Kauffman LJ, Widdowson MA, J. Am. Water. Resour. As., 51(1), 1 (2015)
Uchrin CG, Mangels G, Environ. Toxicol. Chem., 5(4), 339 (1986)
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Ji W, Brusseau ML, Water Resour. Res., 34(7), 1635 (1998)
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