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Evaluating Trichloroethylene Degradation Using Differing Nano- and Micro-Scale Iron ParticlesTrichioroethylene, or TCE, is a central nervous system depressant and possible carcinogen, as well as a persistent groundwater pollutant. TCE exists in the aquifer either as free product in the form of a dense non-aqueous phase liquid (DNAPL) or as a dissolved-phase constituent. It is only slightly soluble in water, so dissolution of the contaminant is a long-term process and in-situ remediation is difficult. To remedy this, NASA and the University of Central Florida developed Emulsified Zero-Valent Iron, or EZVI. The emulsion droplet contains ZVI particles and water encapsulated by an oil/surfactant membrane, and effectively penetrates to degrade DNAPL-phase TCE. To maximize the efficiency of this process, several commercially available ZVIs of radically different particle sizes and morphologies both in emulsion and as neat (unemulsified) metal were evaluated for relative effectiveness at TCE degradation.
Document ID
20120003627
Acquisition Source
Kennedy Space Center
Document Type
Conference Paper
Authors
Berger, Cristina M. (University of Central Florida Orlando, FL, United States)
Geiger, Cherie L. (University of Central Florida Orlando, FL, United States)
Clausen, Christian A. (University of Central Florida Orlando, FL, United States)
Billow, Alexa M. (SHARP Apprentice Cocoa Beach, FL, United States)
Quinn, Jacqueline W. (NASA Kennedy Space Center Cocoa Beach, FL, United States)
Brooks, Kathleen B. (NASA Kennedy Space Center Cocoa Beach, FL, United States)
Date Acquired
August 25, 2013
Publication Date
May 22, 2006
Subject Category
Chemistry And Materials (General)
Report/Patent Number
KSC-2006-078
Meeting Information
Meeting: Fifth International Conference on Remediation of Chlorinated and Recalcitrant Compounds
Location: Monterey, CA
Country: United States
Start Date: May 22, 2006
End Date: May 25, 2006
Sponsors: Battelle
Distribution Limits
Public
Copyright
Public Use Permitted.

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