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Evaluation of the Effects of Bioaugmentation and Biostimulation on Natural Attenuation and Biodegradation Pathways of Chlorinated Compounds in a Tidal Wetland

dc.contributor.advisorBecker, Jennifer Gen_US
dc.contributor.authorDevillier, Emily Nicoleen_US
dc.date.accessioned2007-02-01T20:23:53Z
dc.date.available2007-02-01T20:23:53Z
dc.date.issued2006-12-12en_US
dc.identifier.urihttp://hdl.handle.net/1903/4221
dc.description.abstractThe usefulness of bioaugmentation and biostimulation in enhancing the natural attenuation of chlorinated compounds at a seep site at Aberdeen Proving Ground, MD was tested. The biodegradation of (1) a mixture of 1,1,2,2-tetrachloroethane, tetrachloroethene, and carbon tetrachloride, or (2) TeCA alone was compared in microcosms amended with chlorinated substrates alone, chlorinated substrates and electron donor, and chlorinated substrates, electron donor, and a TeCA-degrading enrichment culture. A third experiment evaluated the usefulness of H2 thresholds in determining the importance of co-metabolic and metabolic processes in biodegradation. TeCA biodegradation was significantly enhanced by bioaugmentation and biostimulation. However, the presence of other contaminants inhibited TeCA biodegradation, even in the presence of electron donors and the enrichment culture. H2 thresholds did not prove useful in determining the importance of metabolic and co-metabolic processes; however, evaluating each chlorinated compound individually provided insight regarding biodegradation pathways and the effects of electron donor substrates on degradation rates.en_US
dc.format.extent1101352 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.titleEvaluation of the Effects of Bioaugmentation and Biostimulation on Natural Attenuation and Biodegradation Pathways of Chlorinated Compounds in a Tidal Wetlanden_US
dc.typeThesisen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.contributor.departmentBiological Resources Engineeringen_US
dc.subject.pqcontrolledEngineering, Environmentalen_US
dc.subject.pqcontrolledBiogeochemistryen_US
dc.subject.pquncontrolledchlorinated compoundsen_US
dc.subject.pquncontrolledbiodegradationen_US
dc.subject.pquncontrolledbioaugmentationen_US
dc.subject.pquncontrolledbiostimulationen_US


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