Abstract
Microcosm studies are currently one of the best tools available for the assessment of a site-specific biodehalogenation potential. Physiological and quantitative studies conducted in laboratory microcosms can be combined with molecular tools to determine which dechlorinating bacteria and supporting community members are present, and can also help to develop rate information for the design of field implementation. Until existing technologies for rapid, inexpensive detection of specific microbial populations and the active expression of important genes are improved, laboratory microcosm studies continue to be a vital tool for assessing bioremediation potential in the field and providing a design basis for implementation. Small-scale field tests or in situ microcosms are currently the only alternative to laboratory microcosm studies. Ultimately, for full-scale site remediation, reliable, flexible models are needed which can aid in design and management of these complex systems. The determination of relevant, site-specific parameters for input into the models is another important potential use for laboratory microcosm studies.
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