ORNL/MMES research into remedial applications of zero-valence metals. 3. Removal of TCE, cis-1,2-DCE, vinyl choride, and technetium
- Martin Marietta Energy Systems, Kevil, KY (United States)
- Oak Ridge National Lab., Grand Junction, CO (United States); and others
Technetium-99, trichloroethene (TCE), cis-1,2-dichloroethene (DCE), and vinyl chloride (VC) were removed from contaminated groundwater with zero-valent iron. Batch and field column tests suggest no synergistic or antagonistic effects between {sup 99}Tc and the chlorinated hydrocarbons. Batch studies indicate 50% removal of {sup 99}Tc in less than one hour, with initial activity of 2,500 pCi/L. Removal efficiency was greatest for TCE followed by DCE and VC. A column experiment with a residence time of less than one hour resulted in complete removal of {sup 99}Tc and TCE from the effluent. No accumulation of DCE or VC was evident in the effluent; in contrast, ethene, ethane, and chloride levels increased. The pH within the column increased from 6.2 and stabilized at 8.7.
- OSTI ID:
- 126419
- Report Number(s):
- CONF-950402-; TRN: 95:006086-0403
- Resource Relation:
- Conference: 209. American Chemical Society (ACS) national meeting, Anaheim, CA (United States), 2-6 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of 209th ACS national meeting; PB: 2088 p.
- Country of Publication:
- United States
- Language:
- English
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