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University of Washington

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Superfund Research Program

Anaerobic and Aerobic Bioremediation of Chlorinated Organic Compounds: Processes and Enhanced In Situ Removal

Project Leader: John Ferguson
Grant Number: P42ES004696
Funding Period: 1995 - 2006

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Project Summary (1995-2000)

The broad objectives of this project are to continue to study the anaerobic and aerobic microbial enrichments that are capable of chlorinated organic compound bioremediation and to study their biostimulation in the near vicinity of non-aqueous phase liquids (NAPLs). Enriched cultures and isolates are being studied to investigate microbiological characteristics and engineering applications. The in situ studies require development of aquifer microcosms to simulate subsurface bioremediation near NAPLs and the development of sophisticated tools for sampling and understanding the chemical and microbiological responses to engineering variables. Kinetic modeling of microbial activity continues, but a greater modeling activity focus on the transport and biodegradation in porous media with biostimulation and groundwater flow. The modeling is being used to design microcosm studies. The interpretation and simulation of these results lead to their extrapolation to field scale in situ bioremediation. This work will provide strong, continuing collaborations among faculty and students in engineering, microbiology, and health sciences.

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