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Effect of Surfactant and Natural Organic Matter on Reductive Dechlorination of TCE by Zero-valent Iron  

ParkCho, Jae-WooHyun-Hee (National Subsurface Environmental Research Laboratory, Ewha Womans University)
Park, Jae-Woo (National Subsurface Environmental Research Laboratory, Ewha Womans University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.24, no.4, 2002 , pp. 689-696 More about this Journal
Abstract
In situ permeable reactive barrier (PRB) technologies have been proposed to transform or remove pollutants from contaminated subsurface environment. The majority of installed PRBs utilize zero-valent iron (ZVI) as the reactive media converting contaminants to nontoxic or immobile species. In this research, the effects of surfactant and natural organic matter (NOM) on the dechlorination of trichloroethylene (TCE) by ZVI were examined. The dechlorination rate of TCE in the presence of ZVI with surfactant and NOM was higher than that without them. This was presumed to be caused by aqueous surfactant and NOM which sorbed TCE molecules in aqueous phase and facilitated the approach of TCE to ZVI surface.
Keywords
Permeable Reactive Barrier; Zero-valent Iron; Dechlorination; Surfactant; Natural Organic Matter;
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