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Effect of Surfactant Concentration and pH on Surfactant-Enhanced Remediation in lowa Soil Contaminated by TCB  

Dal-Heui Lee (Korea Biosystems. KIST Venture Town 945B, Hawolgok-dong, Sungbuk-gu, Seoul 136-791m Korea)
Robert D. Cody (Department of Geological and Atmospheric Sciences, 253 Science I, Iowa State University)
Publication Information
Economic and Environmental Geology / v.35, no.2, 2002 , pp. 149-154 More about this Journal
Abstract
Column tests were carried out to examine the effect of surfactant solution conditions on surfactant-enhanced remediation of contaminated soil. The selected conditions of the surfactant solution were concentration and pH. 1,2,4-trichlo-robenzene (TCB) was chosen as the model hydrophobic organic substances. Sodium diphenyl oxide disulfonate (DOSL) and octylphenoxypoly ethoxyethanol (OPEE) surfactants were selected for this study. Two Iowa soils, Fruitfield sand and Webster clay loam, were leached with surfactant solution. The test results revealed that an optimum condition was achieved for 4 %(v/v) of concentration and 10 of pH, respectively. The maximum recoveries of added TCB (93-98%) were obtained when optimal conditions of each surfactant solution parameter were simultaneously met. The optimum conditions of these parameters may be useful for surfactant-assisted remediation in soil contaminated by TCB.
Keywords
surfactant; TCB; Remediation; Optimum conditions; Soil;
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