Full-scale demonstration of in situ bioremediation of trichloroethylene--laboratory and modeling studies

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:210210

Goltz, M N; Carrothers, T J; Hopkins, G D ^[1]

---

1. Stanford Univ., CA (United States); and others

A full-scale study of in situ bioremediation is being planned for implementation at a trichloroethylene (TCE) contaminated site at Edwards Air Force Base. To support the demonstration, laboratory studies of sorption and biodegradation were performed. Column studies conducted with TCE and Edwards aquifer material determined the sorption distribution coefficient to be 0.1 millileters per gram, corresponding to a 1.5 retardation factor. Edwards aquifer material from four different depths was used to study cometabolic TCE biodegradation in the presence of toluene under aerobic conditions. The studies showed steady state TCE removal of greater than or equal to 85% in the microcosms. A base line simulation was performed using a computer model which incorporated all significant flow and transport processes. The simulation shows how TCE mass declines in both the dissolved and sorbed phases over the four months planned for the demonstration. Based on these preliminary studies, it appears that the planned operation of the bioremediation system can be expected to result in observable decreases in TCE mass and concentration at the Edwards demonstration site.

• OSTI ID: 210210
• Report Number(s): CONF-9509139--
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
55 BIOLOGY AND MEDICINE
BASIC STUDIES
AQUIFERS
BIODEGRADATION
COMPUTERIZED SIMULATION
DEMONSTRATION PLANTS
HALOGENATED ALIPHATIC HYDROCARBONS
MICROORGANISMS
MILITARY FACILITIES
ORGANIC WASTES
SORPTIVE PROPERTIES
WASTE PROCESSING