Reductive dehalogenation of chlorinated organic compounds using zero-valent iron
- Univ. of Waterloo, Ontario (Canada). Dept. of Earth Sciences
Because of the widespread occurrence of halogenated organic compounds, and commonly low drinking water limits, remediation of ground water contaminated by these chemicals has become an important technical challenge. Difficulties associated with conventional remediation methods have stimulated great interest in the development of passive in situ technologies. Studies in progress at the Waterloo Centre for Groundwater Research at the University of Waterloo indicate that various zero-valent metals are effective in enhancing the rate of degradation of a wide range of halogenated aliphatic compounds. Granular iron has been found to be a particularly effective reactant. In a small-scale field test of the in situ technology concentrations of trichloroethylene and perchloroethylene entering the wall, which contained 20% by weight iron, were 250,000 and 43,000 [mu]g/1, respectively. In excess of 90% of both compounds were degraded within the wall. Though designed for complete remediation, the effectiveness was reduced by increasing pH values. Methods for controlling the Chair of the Department of Earth Sciences.
- OSTI ID:
- 6014977
- Report Number(s):
- CONF-9310166--
- Journal Information:
- Ground Water; (United States), Journal Name: Ground Water; (United States) Vol. 31:5; ISSN GRWAAP; ISSN 0017-467X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540250* -- Environment
Terrestrial-- Site Resource & Use Studies-- (1990-)
CHEMICAL REACTIONS
CHLORINATED ALIPHATIC HYDROCARBONS
CLEANING
DECHLORINATION
DECONTAMINATION
DEHALOGENATION
ELEMENTS
FIELD TESTS
GROUND WATER
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN COMPOUNDS
IRON
MANAGEMENT
MATERIALS RECOVERY
METALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
PROCESSING
REMEDIAL ACTION
TESTING
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
WATER