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Chemical oxidation of tetrachloroethene in a fractured saprolite/bedrock aquifer
Author(s) -
Werner Paul G.,
Helmke Martin F.
Publication year - 2003
Publication title -
remediation journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.762
H-Index - 27
eISSN - 1520-6831
pISSN - 1051-5658
DOI - 10.1002/rem.10097
Subject(s) - saprolite , aquifer , bedrock , groundwater , hydrogen peroxide , potassium permanganate , environmental chemistry , reagent , chemistry , permanganate , environmental science , geology , weathering , geochemistry , inorganic chemistry , geotechnical engineering , organic chemistry , geomorphology
Two chemical oxidizers, Fenton's Reagent (FR) and sodium permanganate (NaMnO 4 ), were used to remediategroundwater contaminated by tetrachloroethene (PCE) in a fractured saprolite and bedrock aquifer in Rockville, Maryland. Initial PCEconcentrations ranged from 11 to 25,000 μg/L, averaging 8,684 μg/L in March 2000. A total of 28,256 pounds of hydrogen peroxide(as 35 percent solution) and iron catalyst were injected during the FR treatment program. The FR failed to achieve the desiredclean‐up goal, after which 11,114 pounds of NaMnO 4 (as 40 percent solution) were diluted to a 20 percent solution andinjected into the aquifer. An additional 855 pounds of dilute NaMnO 4 was later injected, which ultimately reduced the original PCE mass byan estimated 95 percent through November 2001. © 2003 Wiley Periodicals, Inc.