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Soil Bioremediation of PerchlorateAthens, GASource: Valentine A. Nzengung, Ph.D., Associate Professor Department of Geology, University of Georgia, Athens, Georgia 30605, Phone: 706-542-2699, Fax: 706-542-2425, Email: vnzengun@uga.edu Project Summary: The following text was excerpted from project summary information provided by University of Georgia personnel, September 2000: To treat soils and sediment contaminated with perchlorate, an in-situ nutrient delivery system to apply known concentrations and volumes of nutrients into the subsurface so as to achieve perchlorate degradation at targeted depths was developed. In bench scale tests, soil from the Longhorn Army Ammunition Plant (LHAAP) in Texas contaminated with about 350 mg/kg of perchlorate was treated to non-detectable levels in less than 9 days. Batch tests have been completed, column studies are in progress and field tests will begin at the LHAAP in Karnack, Texas, in October 2000 and end in May 2001. The proprietary nutrient mix and delivery system can easily be adapted and optimized for soils with different concentrations of perchlorate and hydraulic conductivities. This low cost innovative in-situ soil treatment system avoids the traditional expensive and intrusive method of dig-and-treat. |
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