Groundwater Services, Inc.

Fact Sheet: Subsurface Hydrogen Injection for the In-situ Bioremediation of Chlorinated Solvents

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- By: , , , ,

Courtesy of Groundwater Services, Inc.

Abstract

In-situ bioremediation via direct hydrogen addition has the potential to become a simple and low-cost treatment approach for sites contaminated with chlorinated solvent compounds (PCE, TCE, etc.). Based on the results of recent research, the role of hydrogen as an electron donor is now widely recognized as the key factor governing the dechlorination of chlorinated compounds (Holliger et al., 1993; DiStefano et al., 1992; Maymo-Gatell et al., 1995; Gossett and Zinder, 1996; Smatlak et al., 1996; Hughes, Newell, and Fisher, 1997). Because of hydrogenÕs low cost, its ability to be delivered safely and inexpensively in a variety of ways, and its ability to promote rapid dechlorination, direct hydrogen addition represents a high-payoff technology for management of chlorinated solvent plumes.

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