Accession Number : ADA548721


Title :   In Situ Bioremediation of Perchlorate in Vadose Zone Source Areas


Descriptive Note : Final rept.


Corporate Author : SHAW ENVIRONMENTAL INC LAWRENCEVILLE NJ


Personal Author(s) : Diebold, Jay


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA548721


Report Date : Jan 2011


Pagination or Media Count : 252


Abstract : Ammonium perchlorate (NH4ClO4 Biological treatment has been successfully applied for ex situ remediation of perchlorate in groundwater beginning in 1998, and in situ applications are rapidly emerging. During the past decade, a variety of microbial strains have been isolated with the ability to degrade perchlorate by using the molecule as a terminal electron acceptor (Coates and Achenbach, 2004; Coates et al., 1999; Rikken et al., 1996; Wallace et al., 1996; Logan, 1998; Wu et al., 2001). In general, these perchlorate-reducing bacteria (PRB) are facultative anaerobes, capable of utilizing oxygen, nitrate, and perchlorate as electron acceptors (Coates and Achenbach, 2004). Research suggests that these organisms are naturally-occurring in many environments, including groundwater aquifers, sludges, and raw wastewater, as well as in soils (Coates and Achenbach, 2004; Coates et al., 1999; Wu et al., 2001; Waller et al., 2004). Such strains have been successfully utilized in ex situ fluidized bed reactor systems to treat perchlorate-contaminated groundwater at five sites, including the Longhorn Army Ammunition Plant (Karnack, TX), Aerojet Corporation (Rancho Cordova, CA), Tronox LLC (formerly Kerr-McGee Corp production facility; Henderson, NV), and Jet Propulsion Labs (Pasadena, CA) (Hatzinger, 2005; McCarty and Meyer, 2005). Continuous Stirred-Tank Reactors (CSTRs) have also been successfully applied to biologically treat high concentrations of perchlorate in wastewater (Hatzinger, 2005). ) has been used for several decades in the United States as an oxidizer in solid propellants and explosives.


Descriptors :   *AMMONIUM PERCHLORATE , *CONTAMINATION , *GROUND WATER , *PERCHLORATES , *WASTE WATER , AMMUNITION , ARMY FACILITIES , BIODEGRADATION , CONCENTRATION(COMPOSITION) , ELECTRON ACCEPTORS , ENVIRONMENTAL IMPACT STATEMENTS , FLUIDIZED BED PROCESSORS , GUIDED MISSILES , HIGH RATE , JET PROPULSION , MOLECULES , NUCLEAR REACTORS , PROPULSION SYSTEMS , ROCKETS , SAFETY , SOLID PROPELLANTS , STRAINS(BIOLOGY) , UNITED STATES , WASTE TREATMENT


Subject Categories : Inorganic Chemistry
      Water Pollution and Control


Distribution Statement : APPROVED FOR PUBLIC RELEASE