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In situ treatability testing of reductive dechlorination in wetland sediments

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Abstract

In situ treatability testing was conducted in the discharge wetlands along West Branch Canal Creek at Aberdeen Proving Ground, MD. The potential for stimulating reductive dechlorination of 1,1,2,2-tetrachloroethane, tetrachloroethylene, trichloroethylene, and carbon tetrachloride in areas of preferential discharge or seeps was evaluated. Geological Survey that degrades chlorinated ethanes and ethylenes was tested using MICRO-Trac??? devices. At seep 3-4W, results of the C and BA MICRO-Trac??? treatments showed essentially no biodegradation of chlorinated solvents occurring under natural and bioaugmented conditions. Results of geochemical samples at this site indicated predominantly iron- and sulfate-reducing conditions consistent with the rapid discharge rates previously measured. The biostimulated treatment showed stimulation of methanogenic conditions and partial degradation of the parent chlorinated VOC to intermediate chlorinated compounds. The bioaugmented and bistimulated treatment showed the highest production of methane, the highest removal of parent compounds and intermediate daughter products, and the highest production of the non-chlorinated end product ethylene. This is an abstract of a paper presented at the proceedings of the 8th International In Situ and On-Site Bioremediation Symposium (Baltimore, MD 6/6-9/2005).

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
In situ treatability testing of reductive dechlorination in wetland sediments
ISBN:
9781574771527
Volume
4
Year Published:
2005
Language:
English
First page:
1691
Last page:
1692
Number of Pages:
2
Conference Title:
8th International In Situ and On-Site Bioremediation Symposium
Conference Location:
Baltimore, MD
Conference Date:
6 June 2005 through 9 June 2005