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PASSIVE BIOBARRIER FOR TREATING CO-MINGLED PERCHLORATE AND RDX IN GROUNDWATER AT AN ACTIVE RANGE
Hatzinger, P.B. and M.E. Fuller.
ESTCP Project ER-201028, 225 pp, 2016
A field demonstration was undertaken to investigate the feasibility of using a passive emulsified oil biobarrier to remediate commingled perchlorate, RDX, and HMX in the naturally acidic groundwater at the Naval Surface Warfare Center, Dahlgren (Virginia). Microcosm studies indicated that a specific emulsified oil (EOS 550LS) plus a slow-release buffering agent (CoBupH) was the most effective substrate for promoting the biodegradation of all three target contaminants. Perchlorate degraded most quickly and HMX most slowly. After the second injection of emulsified oil, concentrations of RDX, HMX, and perchlorate fell by ≥92% in the centerline of monitoring wells extending 40 ft downgradient of the biobarrier. Accumulation of nitroso- degradation products from RDX was minimal. The biobarrier required no O&M other than injection/reinjection of oil substrate and had no impact on range activities. https://www.estcp.com/content/download/40732/389701/file/ER-201028%20Final%20Report.pdf
ESTCP Project ER-201028, 225 pp, 2016
A field demonstration was undertaken to investigate the feasibility of using a passive emulsified oil biobarrier to remediate commingled perchlorate, RDX, and HMX in the naturally acidic groundwater at the Naval Surface Warfare Center, Dahlgren (Virginia). Microcosm studies indicated that a specific emulsified oil (EOS 550LS) plus a slow-release buffering agent (CoBupH) was the most effective substrate for promoting the biodegradation of all three target contaminants. Perchlorate degraded most quickly and HMX most slowly. After the second injection of emulsified oil, concentrations of RDX, HMX, and perchlorate fell by ≥92% in the centerline of monitoring wells extending 40 ft downgradient of the biobarrier. Accumulation of nitroso- degradation products from RDX was minimal. The biobarrier required no O&M other than injection/reinjection of oil substrate and had no impact on range activities. https://www.estcp.com/content/download/40732/389701/file/ER-201028%20Fin
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