Remediation of Soil with Surfactants in the Form of Foam and Liquid Solutions
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Published:2001
Catherine N. Mulligan, Farzad Eftekhari, 2001. "Remediation of Soil with Surfactants in the Form of Foam and Liquid Solutions", Geoenvironmental Engineering: Geoenvironmental Impact Management: Proceedings of the third conference organized by the British Geotechnical Association and Cardiff School of Engineering, Cardiff University, and held in Edinburgh on 17–19 September 2001, R. N. Yong, H. R. Thomas
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An investigation was made into evaluating the capability of surfactants in the form of foam for removing contaminants from the soil. Several surfactants were investigated for their ability to make foam. Two of them, Triton X100 and JBR425 (a rhamnolipid biosurfactant), generated foam with higher quality (99%) and higher stability compared to other surfactants. Triton X-100 and JBR425 were then used to investigate the removal efficiency in soils contaminated with pentachlorophenol (PCP). TritonX100 showed better results in terms of final removal efficiency. TritonX100 (1%) removed 85 and 84 % of PCP from fine sand soil and sandy-silt contaminated with 1000 mg/kg PCP, while these values were 60 and 61 % for JBR425 (1%). The results of this study on a sandy and sandy-silt media found that the foam can be used as a fluid to enhance soil remediation under low pressures compared to other fluids such as liquid surfactant solutions.
INTRODUCTION
MATERIALS AND METHODS
RESULTS AND DISCUSSION
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