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Article
Use of surfactants and blends to remove DDT from contaminated soils
Article first published online: 22 DEC 2011
DOI: 10.1002/cjce.21620
Copyright © 2011 Canadian Society for Chemical Engineering
Additional Information
How to Cite
Rios, L. E., David, M., Vazquez-Arenas, J. and Anderson, W. A. (2013), Use of surfactants and blends to remove DDT from contaminated soils. Can. J. Chem. Eng., 91: 238–244. doi: 10.1002/cjce.21620
Publication History
- Issue published online: 28 DEC 2012
- Article first published online: 22 DEC 2011
- Manuscript Accepted: 7 OCT 2011
- Manuscript Revised: 22 SEP 2011
- Manuscript Received: 12 JUL 2011
- Abstract
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Keywords:
- soil washing;
- soil remediation;
- hydrophobic contaminants;
- leaching;
- surfactant analysis
Abstract
Removal of dichloro-diphenyl-trichloroethane (DDT) from soils using surfactant-enhanced solubilisation was studied both in batch and continuous flow arrangements to determine if there were advantages to using a combination of non-ionic (Tween and Brij) and anionic surfactants. It was observed that the presence of the anionic surfactant sodium dodecyl benzene sulphonate improved the DDT removal efficiency, but had a potentially negative effect on flow rates in column leaching experiments at concentrations over 0.1%. The potential for re-use of the surfactant mixture was studied and demonstrated by removing DDT and its metabolites from the surfactant solution using activated carbon. © 2011 Canadian Society for Chemical Engineering