A pilot test of passive oxygen release for enhancement of in situ bioremediation of BTEX-contaminated ground water

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · Ground Water Monitoring and Remediation

DOI:https://doi.org/10.1111/j.1745-6592.1997.tb01282.x· OSTI ID:516744

Chapman, S W; Byerley, B T; Smyth, D J.A.; Mackay, D M

A pilot-scale field demonstration of the use of Oxygen Release Compound{trademark} (ORC) was conducted at the site of a former gasoline service station. ORC was installed into a barrier consisting of a tight pattern of treatment wells located relatively near the apparent source of hydrocarbon contamination. The purpose of the barrier was to enhance in situ biodegradation of BTEX in ground water by the passive release of oxygen from the unpumped treatment wells placed across the migration path of the plume. Detailed monitoring was carried out using fencelines of multilevel monitoring wells located up- and downgradient of the barrier. Total BTEX concentrations influent to the barrier were found to be highly variable in space and time. Total influent BTEX concentrations averaged on a cross section transverse to flow were less variable over time, ranging from 10 to 16 mg/L. Significant decreases in BTEX mass flux through the zone impacted by the treatment wells were observed. For the entire portion of the plume impacted by the treatment wells, estimated BTEX treatment efficiency was approximately 70% on Day 51 of the test and declined thereafter.

• Sponsoring Organization: USDOE
• OSTI ID: 516744
• Journal Information: Ground Water Monitoring and Remediation, Journal Name: Ground Water Monitoring and Remediation Journal Issue: 2 Vol. 17; ISSN GWMREV; ISSN 1069-3629
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
54 ENVIRONMENTAL SCIENCES
ALKYLATED AROMATICS
AROMATICS
BENZENE
BIODEGRADATION
CONTAINMENT SYSTEMS
ENVIRONMENTAL TRANSPORT
FIELD TESTS
GROUND WATER
IN-SITU PROCESSING
MONITORING
OIL SPILLS
REMEDIAL ACTION